/* ==========================================================================
   Saran Neralla Portfolio CSS (Professional Developer Slate Edition)
   Design System: Gunmetal Steel, Deep Charcoal, Crimson & Amber Accents
   ========================================================================== */

/* --- Custom Variables & Theme --- */
:root {
    /* Color Tokens (Professional Dark Mode Default) */
    --hue: 0; /* Base Hue: Deep Crimson Red */
    
    --primary: hsl(var(--hue), 80%, 48%);      /* Deep Crimson Tech Red */
    --primary-glow: hsl(var(--hue), 85%, 58%); /* Vibrant Glow Red */
    --primary-muted: hsl(var(--hue), 70%, 25%);/* Dark Burgundy / Blood Red */
    
    --accent-amber: hsl(38, 95%, 50%);         /* Tech Amber/Gold Highlight */
    --accent-glow: hsl(38, 95%, 65%);
    
    --bg-main: hsl(215, 20%, 4%);               /* Deep Space Charcoal Black */
    --bg-card: hsla(215, 15%, 8%, 0.7);         /* Gunmetal Steel Card */
    --bg-card-hover: hsla(215, 15%, 11%, 0.85);
    --bg-nav: hsla(215, 20%, 3%, 0.7);
    --bg-nav-shrunk: hsla(215, 20%, 2%, 0.88);
    --bg-input: hsla(215, 15%, 12%, 0.3);       /* Dark Input Background */
    
    --text-primary: hsl(215, 20%, 94%);         /* Crisp Silver */
    --text-secondary: hsl(215, 12%, 75%);       /* Muted Slate */
    --text-muted: hsl(215, 10%, 50%);
    
    --border-color: hsla(215, 25%, 50%, 0.08);  /* Precision Grid Lines */
    --border-color-hover: hsla(var(--hue), 80%, 48%, 0.3);
    
    --shadow-color: rgba(0, 0, 0, 0.6);
    --glow-color: hsla(var(--hue), 80%, 48%, 0.15);
    --glow-amber: hsla(38, 95%, 50%, 0.12);
    
    /* Font Families */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
    
    /* Transitions */
    --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: all 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Header Dimensions */
    --header-height-initial: 100px;
    --header-height-shrunk: 70px;
}

/* Light Theme Variables override (Professional Light Grid) */
[data-theme="light"] {
    --bg-main: hsl(215, 10%, 97%);
    --bg-card: hsla(215, 15%, 100%, 0.85);
    --bg-card-hover: hsla(215, 15%, 100%, 0.95);
    --bg-nav: hsla(215, 10%, 97%, 0.75);
    --bg-nav-shrunk: hsla(215, 10%, 95%, 0.9);
    --bg-input: hsl(0, 0%, 100%);               /* White Input Background for Light Mode */
    
    --text-primary: hsl(215, 25%, 12%);
    --text-secondary: hsl(215, 15%, 42%);
    --text-muted: hsl(215, 10%, 58%);
    
    --border-color: hsla(215, 15%, 0%, 0.14);   /* More visible border in Light Mode */
    --border-color-hover: hsla(var(--hue), 75%, 45%, 0.35);
    
    --shadow-color: rgba(15, 23, 42, 0.06);
    --glow-color: hsla(var(--hue), 75%, 45%, 0.06);
    --glow-amber: hsla(38, 90%, 45%, 0.06);
}

/* --- Global Reset & Setup --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.font-accent {
    font-family: var(--font-heading);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    background: none;
    border: none;
    outline: none;
}

/* --- Scrollbar Customization --- */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: hsla(215, 15%, 30%, 0.4);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
    box-shadow: 0 0 8px var(--primary-glow);
}

/* --- Cyber Grid Backdrop --- */
.cyber-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    overflow: hidden;
    background-color: var(--bg-main);
    pointer-events: none;
}

.grid-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(var(--border-color) 1.2px, transparent 1.2px),
        linear-gradient(to right, hsla(215, 20%, 50%, 0.015) 1px, transparent 1px),
        linear-gradient(to bottom, hsla(215, 20%, 50%, 0.015) 1px, transparent 1px);
    background-size: 35px 35px;
    background-position: center;
}

.scanline {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.1;
    animation: scan-vertical 9s linear infinite;
}

@keyframes scan-vertical {
    0% { top: -5%; }
    100% { top: 105%; }
}

/* Large ambient cyber glows */
.cyber-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.15;
    mix-blend-mode: screen;
    animation: float-blobs 25s infinite alternate ease-in-out;
}

[data-theme="light"] .cyber-blob {
    opacity: 0.06;
    mix-blend-mode: multiply;
}

.cyber-blob-steel {
    top: -10%;
    left: -5%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--primary-muted), transparent 70%);
}

.cyber-blob-crimson {
    bottom: -15%;
    right: -10%;
    width: 55vw;
    height: 55vw;
    background: radial-gradient(circle, var(--primary), transparent 75%);
    animation-delay: -8s;
}

@keyframes float-blobs {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 8%) scale(1.1); }
}

/* --- Floating Code Syntax Particles --- */
.code-particle {
    position: absolute;
    font-family: monospace;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    opacity: 0.04;
    pointer-events: none;
    z-index: -1;
    white-space: nowrap;
    letter-spacing: 0.05em;
}

[data-theme="light"] .code-particle {
    opacity: 0.07;
}

.float-particle {
    animation: drift var(--duration, 15s) ease-in-out var(--delay, 0s) infinite alternate;
}

@keyframes drift {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(20px, -20px) rotate(1.5deg);
    }
    100% {
        transform: translate(-10px, 15px) rotate(-1deg);
    }
}

/* --- Reusable Components --- */

/* Glassmorphism Card style (Sharper, Professional borders) */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 8px; /* Sharper corners for engineering focus */
    box-shadow: 0 15px 30px -10px var(--shadow-color);
    padding: 2.2rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

/* Hover Sweep Line */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 30%;
    height: 100%;
    background: linear-gradient(90deg, transparent, hsla(var(--hue), 80%, 48%, 0.1), transparent);
    transform: skewX(-20deg);
    transition: 0.8s ease-in-out;
    pointer-events: none;
    z-index: 2;
}

.card:hover::before {
    left: 150%;
}

.card:hover {
    border-color: var(--border-color-hover);
    box-shadow: 0 20px 40px -15px var(--shadow-color), 
                0 0 25px var(--glow-color);
    transform: translateY(-3px);
}

/* Button styles (Sharper Corners) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.9rem 2.2rem;
    border-radius: 4px; /* Sharper corners */
    font-family: var(--font-heading);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-bounce);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.85rem;
    position: relative;
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-muted));
    color: white;
    box-shadow: 0 8px 20px -8px hsla(var(--hue), 80%, 48%, 0.4);
    border-color: var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px -5px hsla(var(--hue), 80%, 48%, 0.6), 
                0 0 15px var(--primary-glow);
}

.btn-secondary {
    background: hsla(215, 15%, 8%, 0.5);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-amber);
    transform: translateY(-2px);
    color: var(--accent-amber);
    box-shadow: 0 0 15px var(--glow-amber);
}

/* Highlight / Gradient Text */
.highlight-text {
    background: linear-gradient(135deg, var(--primary-glow), var(--accent-amber));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--primary);
}

/* Section Header styling */
.section-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 6.5rem 2rem;
    position: relative; /* Keep relative to contain background particles */
}

.section-header {
    text-align: center;
    margin-bottom: 4.5rem;
}

.section-title {
    font-size: 2.3rem;
    font-weight: 800;
    margin-bottom: 0.8rem;
    letter-spacing: -0.01em;
    text-transform: uppercase;
    text-wrap: balance;
}

.section-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent-amber));
    border-radius: 2px;
    margin: 0 auto 1.5rem auto;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    text-wrap: pretty;
}

/* --- Header & Navigation --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height-initial);
    padding: 0 3rem;
    display: flex;
    align-items: center;
    background: var(--bg-nav);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

/* Scroll-Driven Animation (Shrinking Header) */
@supports ((animation-timeline: scroll()) and (animation-range: 0% 100%)) {
    @keyframes shrink-header {
        to {
            height: var(--header-height-shrunk);
            background: var(--bg-nav-shrunk);
            box-shadow: 0 8px 30px -15px var(--shadow-color);
            border-bottom-color: var(--border-color-hover);
        }
    }
    .header {
        animation: shrink-header auto linear both;
        animation-timeline: scroll(block root);
        animation-range: 0px 100px;
    }
}

.header.header-shrunk {
    height: var(--header-height-shrunk);
    background: var(--bg-nav-shrunk);
    box-shadow: 0 8px 30px -15px var(--shadow-color);
    border-bottom-color: var(--border-color-hover);
}

.nav-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.3rem;
    font-family: var(--font-heading);
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

.logo-bracket {
    color: var(--primary);
}

.logo-dot {
    color: var(--accent-amber);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.35rem;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    font-weight: 600;
    font-size: 0.78rem;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    position: relative;
    padding: 0.4rem 0;
    transition: color var(--transition-fast);
}

.nav-num {
    display: none; /* Hide numbers in top navbar for a clean, spacious look */
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent-amber));
    transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

/* Theme Switcher Button */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 4px; /* Sharper */
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.theme-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 8px var(--glow-color);
    transform: scale(1.05);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

.sun-icon { display: none; }
.moon-icon { display: block; }
[data-theme="light"] .sun-icon { display: block; }
[data-theme="light"] .moon-icon { display: none; }

/* Mobile Toggle button */
.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 22px;
    height: 14px;
    cursor: pointer;
}

.mobile-nav-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 1px;
    transition: var(--transition-bounce);
}

/* --- Hero Section --- */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--header-height-initial);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.cyber-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.8rem;
    border-radius: 3px;
    background: hsla(var(--hue), 80%, 48%, 0.08);
    border: 1px solid hsla(var(--hue), 80%, 48%, 0.2);
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: var(--primary);
    box-shadow: 0 0 6px var(--primary-glow);
    animation: flash 1.5s infinite alternate;
}

@keyframes flash {
    0% { opacity: 0.3; }
    100% { opacity: 1; }
}

.badge-code {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--primary-glow);
    letter-spacing: 0.1em;
}

[data-theme="light"] .badge-code {
    color: var(--primary);
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    margin-bottom: 0.8rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 1.8rem;
    min-height: 3rem;
    border-right: 2px solid var(--primary);
    display: inline-block;
    padding-right: 4px;
    animation: blink-caret 0.75s step-end infinite;
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--primary); }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 580px;
    text-wrap: pretty;
}

.hero-buttons {
    display: flex;
    gap: 1.2rem;
    flex-wrap: wrap;
}
/* Cybernetic Circular Avatar & Dashboard Rings */
.hero-avatar-wrapper {
    position: relative;
    justify-self: center;
    width: 290px;
    height: 290px;
    animation: float-photo 6s ease-in-out infinite alternate;
}

@keyframes float-photo {
    0% { transform: translateY(0); }
    100% { transform: translateY(-10px); }
}

.avatar-glow {
    position: absolute;
    top: 5%;
    left: 5%;
    width: 90%;
    height: 90%;
    background: radial-gradient(circle, var(--primary), transparent 70%);
    opacity: 0.35;
    filter: blur(30px);
    z-index: -1;
}

.cyber-avatar-circle {
    width: 100%;
    height: 100%;
    position: relative;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    padding: 6px;
    background-color: hsla(215, 15%, 8%, 0.3);
    z-index: 5;
    transition: var(--transition-smooth);
}

[data-theme="light"] .cyber-avatar-circle {
    background-color: var(--bg-card);
}

.cyber-avatar-circle .avatar-container {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--bg-main);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.6s var(--transition-smooth);
    filter: grayscale(0.25) contrast(1.05) brightness(0.95);
}

.hero-avatar-wrapper:hover .avatar-img {
    transform: scale(1.05);
    filter: grayscale(0) contrast(1.08) brightness(1);
}

/* Concentric Orbital Rings */
.orbital-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 2;
}

.outer-ring {
    width: 114%;
    height: 114%;
    color: var(--primary);
    animation: rotate-clockwise 24s linear infinite;
    opacity: 0.6;
}

.inner-ring {
    width: 107%;
    height: 107%;
    color: var(--accent-amber);
    animation: rotate-counter 18s linear infinite;
    opacity: 0.65;
}

@keyframes rotate-clockwise {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes rotate-counter {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(-360deg); }
}

/* Hero Floating Solid Name */
.hero-name-float {
    color: var(--primary);
    display: inline-block;
    animation: float-name 4s ease-in-out infinite alternate;
}

@keyframes float-name {
    0% { transform: translateY(0); }
    100% { transform: translateY(-4px); }
}
/* Mouse Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    opacity: 0.5;
}

.scroll-indicator:hover {
    opacity: 0.9;
    transform: translateX(-50%) translateY(4px);
}

.mouse-icon {
    width: 22px;
    height: 36px;
    border: 2px solid var(--text-muted);
    border-radius: 10px;
    position: relative;
    display: block;
}

.wheel {
    width: 3px;
    height: 6px;
    background-color: var(--primary);
    border-radius: 1.5px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 1.6s infinite ease-in-out;
}

/* --- About Section & Skills --- */
/* --- About Section & Core Competency --- */
.about-competency-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px; /* Premium rounded corner box */
    max-width: 900px;
    margin: 0 auto;
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(25px);
    box-shadow: 0 10px 40px -10px var(--shadow-color);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), border-color 0.4s ease, box-shadow 0.4s ease;
}

[data-theme="light"] .about-competency-card {
    background: #ffffff;
}

.about-competency-card:hover {
    border-color: var(--primary-glow);
    box-shadow: 0 12px 35px var(--glow-color);
    transform: translateY(-2px);
}

/* macOS Window Bar */
.card-window-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: hsla(215, 15%, 8%, 0.6);
    border-bottom: 1px solid var(--border-color);
    padding: 0.9rem 1.6rem;
}

[data-theme="light"] .card-window-bar {
    background: hsla(215, 10%, 95%, 0.85);
}

.window-dots {
    display: flex;
    gap: 0.45rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.window-title {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.window-action {
    display: flex;
}

.badge-active-status {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.68rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    background: hsla(0, 80%, 48%, 0.08);
    border: 1px solid hsla(0, 80%, 48%, 0.25);
    color: var(--primary-glow);
    letter-spacing: 0.05em;
}

[data-theme="light"] .badge-active-status {
    background: hsla(0, 80%, 48%, 0.05);
    color: var(--primary);
}

.card-content-body {
    padding: 2.5rem;
}

.card-content-body p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.75;
    margin-bottom: 1.6rem;
}

.card-content-body p:last-of-type {
    margin-bottom: 2rem;
}

/* Horizontal Metrics Row */
.card-metrics-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-color);
    padding-top: 1.8rem;
    margin-top: 2rem;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.metric-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.84rem;
    color: var(--text-secondary);
}

.metric-item svg {
    color: var(--text-muted);
}

.metric-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.dot-pulse-green {
    background: #00e676;
    box-shadow: 0 0 6px #00e676;
    animation: ping-blink 1.5s infinite;
}

.metric-label {
    color: var(--text-muted);
    font-weight: 600;
}

.metric-val {
    font-weight: 700;
    color: var(--text-primary);
}

.metric-val.text-red {
    color: var(--primary-glow);
}

[data-theme="light"] .metric-val.text-red {
    color: var(--primary);
}

.metric-val.text-amber {
    color: var(--accent-amber);
}

[data-theme="light"] .metric-val.text-amber {
    color: hsl(38, 90%, 40%);
}

.metric-divider {
    width: 1px;
    height: 18px;
    background-color: var(--border-color);
}

/* --- Tech Stack Section --- */
.tech-stack-section {
    position: relative;
    padding: 6rem 0;
}

.tech-stack-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.8rem;
    margin-top: 3.5rem;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(25px);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), border-color 0.4s ease, box-shadow 0.4s ease;
}

.tech-card:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--primary-glow);
    box-shadow: 0 10px 30px var(--glow-color);
}

.tech-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.8rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.8rem;
}

.tech-card-num {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.75rem;
    color: var(--primary-glow);
    letter-spacing: 0.1em;
}

[data-theme="light"] .tech-card-num {
    color: var(--primary);
}

.tech-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.tech-chips-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    flex-grow: 1;
    align-content: flex-start;
}

.tech-chip {
    padding: 0.45rem 0.85rem;
    border-radius: 4px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: hsla(215, 15%, 12%, 0.35);
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

[data-theme="light"] .tech-chip {
    background: hsla(215, 10%, 90%, 0.4);
    color: var(--text-primary);
}

.tech-chip:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
    border-color: var(--accent-amber);
    transform: scale(1.05);
    box-shadow: 0 0 10px var(--glow-amber);
}

/* Expandable sub-chips */
.tech-chips-expandable {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.4s ease;
}

.tech-chips-expandable.expanded {
    max-height: 200px;
    opacity: 1;
    margin-top: 0.6rem;
}

.expand-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: 700;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 1.5rem;
    cursor: pointer;
    padding: 0.3rem 0;
    transition: var(--transition-smooth);
    width: fit-content;
}

.expand-btn:hover {
    color: var(--primary-glow);
}

[data-theme="light"] .expand-btn:hover {
    color: var(--primary);
}

.chevron-icon {
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.expand-btn.active .chevron-icon {
    transform: rotate(180deg);
}

/* --- Solutions Section --- */
.solutions-section {
    position: relative;
    padding: 6rem 0;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.8rem;
    margin-top: 3.5rem;
}

.solution-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 2.2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(25px);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), border-color 0.4s ease, box-shadow 0.4s ease;
}

.solution-card:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: var(--primary-glow);
    box-shadow: 0 12px 35px var(--glow-color);
}

.solution-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transform: skewX(-20deg);
    transition: none;
}

[data-theme="light"] .solution-card::after {
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.02), transparent);
}

.solution-card:hover::after {
    left: 150%;
    transition: left 1.2s ease-in-out;
}

.solution-header-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.solution-icon-box {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: hsla(0, 80%, 48%, 0.08);
    border: 1px solid hsla(0, 80%, 48%, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-glow);
    transition: var(--transition-smooth);
}

[data-theme="light"] .solution-icon-box {
    background: hsla(0, 80%, 48%, 0.05);
    color: var(--primary);
}

.solution-card:hover .solution-icon-box {
    background: var(--primary);
    color: white;
    box-shadow: 0 0 15px var(--glow-color);
}

.solution-icon-box svg {
    width: 22px;
    height: 22px;
}

.solution-num {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.solution-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.solution-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.55;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.solution-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.sol-tag {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent-amber);
    background: hsla(38, 95%, 50%, 0.06);
    border: 1px solid hsla(38, 95%, 50%, 0.15);
    padding: 0.25rem 0.55rem;
    border-radius: 3px;
    text-transform: uppercase;
}

[data-theme="light"] .sol-tag {
    color: hsl(38, 90%, 40%);
}

/* --- Projects Section --- */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 3.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.4rem;
    border-radius: 4px; /* Sharper */
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition-bounce);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 12px -4px hsla(var(--hue), 80%, 48%, 0.4);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.2rem;
}

/* Project Card layout (Sharper Corners) */
.project-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
    border-radius: 6px;
}

.project-image-wrapper {
    position: relative;
    width: 100%;
    height: 190px;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    filter: grayscale(0.15) brightness(0.9);
}

.project-card:hover .project-img {
    transform: scale(1.03);
    filter: grayscale(0) brightness(0.95);
}

.project-overlay-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 50%, rgba(10, 12, 16, 0.75));
    z-index: 1;
}

.project-badge {
    position: absolute;
    top: 0.8rem;
    right: 0.8rem;
    padding: 0.25rem 0.8rem;
    background: hsla(38, 95%, 50%, 0.08);
    border: 1px solid hsla(38, 95%, 50%, 0.25);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 3px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--accent-glow);
    z-index: 2;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

[data-theme="light"] .project-badge {
    color: var(--accent-amber);
    background: hsla(38, 95%, 50%, 0.05);
}

.project-info {
    padding: 1.8rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card-title {
    font-size: 1.25rem;
    margin-bottom: 0.6rem;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.project-card-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.6rem;
}

.tag {
    font-size: 0.72rem;
    padding: 0.2rem 0.65rem;
    border-radius: 2px;
    background: hsla(215, 15%, 12%, 0.6);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-weight: 600;
}

.project-links {
    display: flex;
    gap: 1.2rem;
}

.project-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.primary-link {
    color: var(--primary-glow);
}

[data-theme="light"] .primary-link {
    color: var(--primary);
}

.primary-link:hover {
    color: var(--text-primary);
    text-shadow: 0 0 8px var(--glow-color);
    transform: translateX(1px);
}

.secondary-link {
    color: var(--text-muted);
}

.secondary-link:hover {
    color: var(--text-primary);
}

.project-card.filtered-out {
    display: none;
}

/* --- Experience Timeline Section --- */
.timeline {
    position: relative;
    max-width: 850px;
    margin: 0 auto;
    padding: 1.5rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 23px;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--border-color) 85%);
}

.timeline-item {
    position: relative;
    padding-left: 55px;
    margin-bottom: 3.2rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 14px;
    top: 8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-main);
    border: 4px solid var(--primary);
    z-index: 2;
    transition: var(--transition-bounce);
    box-shadow: 0 0 6px var(--primary);
}

.timeline-item:hover .timeline-dot {
    background: var(--primary);
    transform: scale(1.2);
    box-shadow: 0 0 12px var(--primary-glow);
    border-color: var(--accent-amber);
}

.timeline-date {
    font-family: var(--font-heading);
    font-weight: 800;
    color: var(--primary);
    font-size: 1rem;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

[data-theme="light"] .timeline-date {
    color: var(--primary);
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.4rem;
}

.timeline-company {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

/* --- Contact Section --- */
.contact-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 3.5rem;
    align-items: stretch;
}

.contact-info-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-info-card p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.6rem;
    margin-bottom: 2.2rem;
}

.contact-method-item {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.contact-icon-wrapper {
    width: 44px;
    height: 44px;
    border-radius: 4px; /* Sharper */
    background: hsla(var(--hue), 80%, 48%, 0.08);
    border: 1px solid hsla(var(--hue), 80%, 48%, 0.18);
    color: var(--primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="light"] .contact-icon-wrapper {
    color: var(--primary);
    background: hsla(var(--hue), 80%, 48%, 0.05);
}

.contact-method-details {
    display: flex;
    flex-direction: column;
}

.contact-method-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-method-value {
    font-weight: 600;
    font-size: 0.95rem;
    word-break: break-all;
}

.contact-method-value:hover {
    color: var(--primary-glow);
}

.social-channels h4 {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.8rem;
}

.social-links-grid {
    display: flex;
    gap: 0.8rem;
}

.social-icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 4px; /* Sharper */
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-bounce);
}

.social-icon-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px -4px hsla(var(--hue), 80%, 48%, 0.4);
}

/* Contact Form controls */
.contact-form-card {
    display: flex;
    flex-direction: column;
}

.contact-form-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.8rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    position: relative;
    margin-bottom: 1.6rem;
}

.form-control {
    width: 100%;
    padding: 1.05rem 1.15rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 4px; /* Sharper */
    color: var(--text-primary);
    transition: var(--transition-smooth);
    font-size: 0.92rem;
}

.form-control:hover {
    border-color: hsla(215, 10%, 50%, 0.3);
}

/* Float Label effect */
.form-label {
    position: absolute;
    top: 50%;
    left: 1.15rem;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.92rem;
    transition: var(--transition-bounce);
    pointer-events: none;
}

.text-area {
    resize: none;
}

.form-group textarea + .form-label {
    top: 1.4rem;
    transform: none;
}

/* Input states for float effect */
.form-control:focus,
.form-control:not(:placeholder-shown) {
    border-color: var(--primary);
    background: var(--bg-input);
    box-shadow: 0 0 8px var(--glow-color);
}

.form-control:focus + .form-label,
.form-control:not(:placeholder-shown) + .form-label {
    top: 0;
    left: 0.8rem;
    transform: translateY(-50%) scale(0.82);
    background: var(--bg-main);
    padding: 0 0.35rem;
    color: var(--primary-glow);
    font-weight: 700;
}

[data-theme="light"] .form-control:focus + .form-label,
[data-theme="light"] .form-control:not(:placeholder-shown) + .form-label {
    color: var(--primary);
}

.btn-submit {
    width: 100%;
}

.submit-icon {
    transition: transform 0.4s ease;
}

.btn-submit:hover .submit-icon {
    transform: translate(2px, -2px) scale(1.05);
}

/* Toast response notification */
.form-response {
    margin-top: 1.2rem;
    padding: 0.9rem;
    border-radius: 4px;
    display: none;
    align-items: center;
    gap: 0.8rem;
    font-weight: 700;
    font-size: 0.88rem;
}

.form-response.success {
    display: flex;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.form-response.error {
    display: flex;
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

/* --- Footer Area --- */
.footer-bottom {
    background: var(--bg-nav);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 2rem;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.footer-logo {
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.05rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.footer-logo .logo-bracket {
    color: var(--primary);
}

.footer-logo .logo-dot {
    color: var(--accent-amber);
}

.footer-center {
    display: flex;
    justify-content: center;
}

.telemetry-ping {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: hsla(215, 15%, 8%, 0.45);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
}

[data-theme="light"] .telemetry-ping {
    background: hsla(215, 10%, 90%, 0.4);
}

.ping-dot {
    width: 7px;
    height: 7px;
    background: #00e676;
    border-radius: 50%;
    box-shadow: 0 0 6px #00e676;
    animation: ping-blink 1.5s infinite;
}

@keyframes ping-blink {
    0% { opacity: 0.4; }
    50% { opacity: 1; transform: scale(1.1); }
    100% { opacity: 0.4; }
}

.ping-status {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.footer-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.6rem;
    text-align: right;
}

.footer-credits {
    font-weight: 600;
    color: var(--text-secondary);
}

.footer-grid-indicators {
    display: flex;
    gap: 0.8rem;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* --- Scroll-Driven Reveal animations (CSS-only) --- */
@media (prefers-reduced-motion: no-preference) {
    @supports ((animation-timeline: view()) and (animation-range: entry)) {
        @keyframes reveal-in {
            from {
                opacity: 0;
                transform: translateY(40px) scale(0.97);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }
        
        .scroll-reveal {
            animation: reveal-in auto ease-out both;
            animation-timeline: view();
            animation-range: entry 10% entry 38%;
        }
    }
}

.scroll-reveal-active {
    opacity: 1 !important;
    transform: translateY(0) scale(1) !important;
}

.scroll-reveal-hidden {
    opacity: 0;
    transform: translateY(40px) scale(0.97);
    transition: opacity 0.75s ease, transform 0.75s ease;
}

/* --- Responsive Layout Breakpoints --- */

@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-avatar-wrapper {
        order: -1;
        width: 230px;
        height: 230px;
    }
    .tech-stack-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .mobile-nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height-initial);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height-initial));
        background: var(--bg-main);
        flex-direction: column;
        align-items: center;
        padding: 3rem 0;
        gap: 1.8rem;
        box-shadow: 0 12px 25px rgba(0,0,0,0.3);
        border-top: 1px solid var(--border-color);
        transition: var(--transition-bounce);
    }

    .nav-menu .nav-num {
        display: inline-block;
        color: var(--primary);
        font-size: 0.75rem;
        margin-right: 0.3rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .header {
        padding: 0 1.5rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.6rem;
    }
    
    .tech-stack-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    
    .tech-card, .solution-card {
        padding: 1.5rem;
    }
    
    .card-content-body {
        padding: 1.8rem 1.4rem;
    }
    
    .card-metrics-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .metric-divider {
        display: none;
    }
    
    .mobile-nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    
    .mobile-nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-right {
        align-items: center;
        text-align: center;
    }
}

/* ==========================================================================
   Automation Playground Section & CLI Terminal Styles
   ========================================================================== */
.playground-section {
    position: relative;
    padding: 6rem 0;
}

.playground-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 2.8rem;
    margin-top: 3.5rem;
    align-items: stretch;
}

.terminal-control-deck {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem 2.2rem;
    backdrop-filter: blur(20px);
}

[data-theme="light"] .terminal-control-deck {
    background: #ffffff;
}

.control-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.8rem;
    margin-bottom: 1rem;
}

.control-label {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.08em;
}

.control-desc {
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: 2rem;
}

.script-options-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.script-option-item {
    background: hsla(215, 12%, 10%, 0.15);
    border: 1px solid var(--border-color);
    padding: 1.2rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    transition: var(--transition-smooth);
}

[data-theme="light"] .script-option-item {
    background: hsla(215, 10%, 95%, 0.4);
}

.script-option-item.active {
    border-color: var(--primary-glow);
    background: hsla(0, 80%, 48%, 0.03);
}

[data-theme="light"] .script-option-item.active {
    background: hsla(0, 80%, 48%, 0.02);
}

.script-meta {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex-grow: 1;
}

.script-file {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
}

.script-desc {
    font-size: 0.76rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.btn-execute-script {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.55rem 1.1rem;
    border-radius: 4px;
    font-size: 0.74rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    white-space: nowrap;
    position: relative;
}

.script-option-item.active .btn-execute-script {
    border-color: var(--primary-glow);
    color: var(--primary-glow);
    box-shadow: 0 0 8px var(--glow-color);
}

.script-option-item.active .btn-execute-script:hover {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 0 12px var(--primary-glow);
    transform: translateY(-1px);
}

.btn-execute-script:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* CLI Terminal Display */
.terminal-display {
    background: #080c14; /* Solid CLI dark */
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 380px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .terminal-display {
    background: #0a0d16; /* Keep terminal dark in light mode too */
}

.terminal-display-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #0d121c;
    border-bottom: 1px solid var(--border-color);
    padding: 0.8rem 1.4rem;
}

.terminal-tab-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.03em;
}

.terminal-clear-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 600;
    font-family: 'Space Grotesk', monospace;
    transition: color 0.3s;
}

.terminal-clear-btn:hover {
    color: var(--primary-glow);
}

.terminal-display-body {
    padding: 1.6rem;
    flex-grow: 1;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.78rem;
    line-height: 1.65;
    color: #cbd5e1;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    overflow-y: auto;
    max-height: 410px;
}

.terminal-log-line {
    word-break: break-all;
    opacity: 0.9;
    animation: log-slide-in 0.25s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

@keyframes log-slide-in {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 0.9;
        transform: translateY(0);
    }
}

.terminal-log-line.output-info {
    color: #60a5fa; /* Info blue */
}

.terminal-log-line.output-success {
    color: #34d399; /* Success green */
}

.terminal-log-line.output-warn {
    color: #fbbf24; /* Alert yellow */
}

.terminal-log-line.output-error {
    color: #f87171; /* Danger red */
}

.terminal-log-line.output-system {
    color: #c084fc; /* System purple */
}

.terminal-prompt-line {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.terminal-prompt-prefix {
    color: var(--primary-glow);
    font-weight: 700;
    white-space: nowrap;
}

.terminal-active-command {
    color: #f1f5f9;
    font-weight: 600;
    min-height: 15px;
    display: inline-block;
}

.terminal-cursor {
    display: inline-block;
    width: 6px;
    height: 13px;
    background: var(--primary-glow);
    animation: terminal-blink 1.1s infinite step-end;
}

@keyframes terminal-blink {
    50% { opacity: 0; }
}

/* ==========================================================================
   Slide-Over Project Specification Drawer
   ========================================================================== */
.spec-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 2000;
    display: flex;
    justify-content: flex-end;
    pointer-events: none;
    visibility: hidden;
    transition: visibility 0.4s;
}

.spec-drawer.active {
    pointer-events: auto;
    visibility: visible;
}

.drawer-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(4, 7, 12, 0.4);
    backdrop-filter: blur(10px);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 2005;
    cursor: pointer;
}

.spec-drawer.active .drawer-backdrop {
    opacity: 1;
}

.drawer-panel {
    position: relative;
    width: 100%;
    max-width: 580px;
    height: 100%;
    background: var(--bg-card);
    border-left: 1px solid var(--border-color);
    box-shadow: -15px 0 45px rgba(0, 0, 0, 0.5);
    z-index: 2010;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
    backdrop-filter: blur(30px);
}

[data-theme="light"] .drawer-panel {
    background: #ffffff;
}

.spec-drawer.active .drawer-panel {
    transform: translateX(0);
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background: hsla(215, 15%, 8%, 0.3);
}

[data-theme="light"] .drawer-header {
    background: hsla(215, 10%, 95%, 0.5);
}

.drawer-title-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.drawer-close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s, transform 0.3s;
}

.drawer-close-btn:hover {
    color: var(--primary-glow);
    transform: rotate(90deg);
}

.drawer-content-body {
    padding: 2.2rem;
    overflow-y: auto;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Spec Detail Blocks */
.drawer-section {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.drawer-sec-title {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.4rem;
}

.drawer-p-name {
    font-family: var(--font-heading);
    font-size: 1.95rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    margin-bottom: 0.2rem;
}

.drawer-p-tagline {
    font-size: 1.05rem;
    color: var(--primary-glow);
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.drawer-p-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

.drawer-tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.4rem;
}

.drawer-tech-chip {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-secondary);
    background: hsla(215, 12%, 15%, 0.35);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.65rem;
    border-radius: 4px;
    font-family: 'Space Grotesk', monospace;
}

[data-theme="light"] .drawer-tech-chip {
    background: hsla(215, 10%, 93%, 0.4);
}

.drawer-metric-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
    margin-top: 0.4rem;
}

.drawer-metric-card {
    background: hsla(215, 15%, 8%, 0.2);
    border: 1px solid var(--border-color);
    padding: 1rem 1.2rem;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

[data-theme="light"] .drawer-metric-card {
    background: hsla(215, 10%, 95%, 0.3);
}

.d-met-val {
    font-family: 'Space Grotesk', monospace;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-glow);
}

[data-theme="light"] .d-met-val {
    color: var(--primary);
}

.d-met-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Spec Drawer Code View */
.drawer-code-window {
    background: #06090f;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    margin-top: 0.4rem;
}

.code-win-header {
    background: #0a0d16;
    padding: 0.6rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.code-win-title {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 700;
}

.code-win-lang {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.68rem;
    color: var(--primary-glow);
    font-weight: 700;
    text-transform: uppercase;
}

.drawer-code-block {
    padding: 1.4rem;
    overflow-x: auto;
    margin: 0;
    font-family: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.74rem;
    color: #cbd5e1;
    line-height: 1.55;
    white-space: pre;
}

/* ==========================================================================
   Responsive Overrides for Playgrounds & Drawers
   ========================================================================== */
@media (max-width: 992px) {
    .playground-grid {
        grid-template-columns: 1fr;
        gap: 2.2rem;
    }
}

@media (max-width: 768px) {
    .drawer-panel {
        max-width: 100%;
        border-left: none;
    }
    
    .drawer-metric-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }
    
    .script-option-item {
        flex-direction: column;
        align-items: stretch;
        gap: 1.2rem;
    }
    
    .btn-execute-script {
        width: 100%;
        justify-content: center;
    }
}
}