/* ==========================================================================
   YUVAN CHAUDARY — ELITE SDE PORTFOLIO (GOOGLE-RECRUITER OPTIMIZED)
   Design System: Deep Space Obsidian, Emerald Glow, Glassmorphism, Modern Mono
   ========================================================================== */

:root {
    /* Color Palette */
    --bg: #06090e;
    --bg-surface: #0a0f16;
    --bg-card: rgba(13, 19, 28, 0.75);
    --bg-card-hover: rgba(18, 26, 38, 0.85);
    --bg-glass: rgba(16, 24, 36, 0.6);
    
    /* Google & Cyber Accents */
    --emerald: #00ff9d;
    --emerald-dim: #00cc7d;
    --emerald-muted: rgba(0, 255, 157, 0.08);
    --emerald-glow: rgba(0, 255, 157, 0.25);
    --emerald-border: rgba(0, 255, 157, 0.2);
    
    --blue: #38bdf8;
    --blue-dim: #0284c7;
    --blue-muted: rgba(56, 189, 248, 0.08);
    --blue-border: rgba(56, 189, 248, 0.2);
    
    --google-blue: #4285f4;
    --google-red: #ea4335;
    --google-yellow: #fbbc05;
    --google-green: #34a853;
    
    --amber: #fbbf24;
    --amber-muted: rgba(251, 191, 36, 0.08);
    --amber-border: rgba(251, 191, 36, 0.2);
    
    --purple: #c084fc;
    --purple-muted: rgba(192, 132, 252, 0.08);
    --purple-border: rgba(192, 132, 252, 0.2);
    
    --red: #f87171;
    --red-muted: rgba(248, 113, 113, 0.08);
    --red-border: rgba(248, 113, 113, 0.2);

    /* Typography Colors */
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 255, 157, 0.35);

    /* Fonts */
    --font-mono: 'JetBrains Mono', monospace;
    --font-display: 'Syne', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Transitions & Shadows */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
    --glow-shadow: 0 0 25px rgba(0, 255, 157, 0.15);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background Canvas & Noise */
#bgCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
}

.ambient-grid {
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: 1;
    pointer-events: none;
}

.ambient-vignette {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at 50% 30%, transparent 20%, rgba(6, 9, 14, 0.85) 85%);
    z-index: 1;
    pointer-events: none;
}

/* Custom Interactive Cursor */
@media (hover: hover) and (pointer: fine) {
    body, a, button, input, textarea, select {
        cursor: none !important;
    }
}

.cursor {
    width: 8px;
    height: 8px;
    background: var(--emerald);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 14px var(--emerald);
    display: none;
    transition: width 0.2s, height 0.2s, background-color 0.2s;
}

.cursor-ring {
    width: 36px;
    height: 36px;
    border: 1.5px solid rgba(0, 255, 157, 0.4);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform 0.08s ease-out, width 0.2s, height 0.2s, border-color 0.2s;
    display: none;
}

/* Selection */
::selection {
    background: rgba(0, 255, 157, 0.25);
    color: var(--emerald);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    transition: all var(--transition-normal);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 15, 22, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 0.85rem 1.6rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-logo .prompt {
    color: var(--emerald);
}

.nav-logo .tag {
    color: var(--text-dim);
    font-size: 0.75rem;
    font-weight: 400;
}

.recruiter-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: rgba(0, 255, 157, 0.08);
    border: 1px solid var(--emerald-border);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--emerald);
    letter-spacing: 0.04em;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background: var(--emerald);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--emerald);
    animation: pulse 1.8s infinite;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.8rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    transition: color var(--transition-fast);
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--emerald);
    transition: width var(--transition-normal);
}

.nav-links a:hover {
    color: var(--text);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-nav-resume {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-nav-resume:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--text-muted);
    color: var(--emerald);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.4rem;
}

/* ==========================================================================
   HERO SECTION (BALANCED 2-COLUMN GOOGLE READY)
   ========================================================================== */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 2;
    padding: 8rem 2rem 5rem;
}

.hero-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 4rem;
    align-items: center;
}

/* Left Hero Column */
.hero-left {
    display: flex;
    flex-direction: column;
}

.hero-status-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(0, 255, 157, 0.06);
    border: 1px solid var(--emerald-border);
    border-radius: 6px;
    color: var(--emerald);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    align-self: flex-start;
}

.hero-name {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6.5vw, 5.2rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: #ffffff;
    margin-bottom: 1rem;
}

.hero-name .shimmer {
    background: linear-gradient(135deg, #ffffff 30%, var(--emerald) 75%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-dynamic-role {
    font-family: var(--font-mono);
    font-size: clamp(1.05rem, 2.2vw, 1.4rem);
    color: var(--emerald);
    margin-bottom: 1.5rem;
    min-height: 2.2rem;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.hero-dynamic-role .prompt-sym {
    color: var(--text-dim);
    margin-right: 8px;
}

.typing-cursor {
    display: inline-block;
    width: 3px;
    height: 1.25em;
    background-color: var(--emerald);
    margin-left: 4px;
    animation: blink 0.9s infinite;
    vertical-align: middle;
}

.hero-bio {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-muted);
    margin-bottom: 2.2rem;
    max-width: 620px;
}

.hero-bio strong {
    color: var(--text);
    font-weight: 600;
}

.hero-bio .highlight {
    color: var(--emerald);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
}

/* Button System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.85rem 1.75rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 8px;
    transition: all var(--transition-normal);
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--emerald);
    color: #040906;
    border: 1px solid var(--emerald);
    box-shadow: 0 0 20px rgba(0, 255, 157, 0.3);
}

.btn-primary:hover {
    background: #00e08b;
    box-shadow: 0 0 35px rgba(0, 255, 157, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    border: 1px solid var(--border-subtle);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--emerald-border);
    color: var(--emerald);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
}

.btn-outline:hover {
    color: var(--text);
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

/* Right Hero Column: Terminal & Avatar Dock */
.hero-right {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
}

.avatar-badge-card {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    backdrop-filter: blur(16px);
    border-radius: 12px;
    padding: 1.1rem 1.4rem;
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
}

.avatar-badge-card:hover {
    border-color: var(--emerald-border);
    box-shadow: 0 10px 30px rgba(0, 255, 157, 0.1);
}

.avatar-wrapper {
    position: relative;
    width: 68px;
    height: 68px;
    flex-shrink: 0;
}

.avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--emerald);
    position: relative;
    z-index: 2;
}

.avatar-ring {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1px dashed var(--emerald);
    animation: rotateRing 15s linear infinite;
    z-index: 1;
}

.avatar-info {
    display: flex;
    flex-direction: column;
}

.avatar-name {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
}

.avatar-sub {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.avatar-status-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 6px;
    font-size: 0.68rem;
    color: var(--emerald);
    font-family: var(--font-mono);
}

/* Interactive Developer Terminal */
.terminal-card {
    background: rgba(9, 14, 22, 0.85);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(16px);
    transition: all var(--transition-normal);
}

.terminal-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.terminal-header {
    background: rgba(14, 21, 32, 0.9);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.terminal-controls {
    display: flex;
    gap: 7px;
}

.term-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
}
.term-dot.red { background: #ff5f56; }
.term-dot.yellow { background: #ffbd2e; }
.term-dot.green { background: #27c93f; }

.terminal-tabs {
    display: flex;
    gap: 4px;
}

.term-tab {
    background: none;
    border: none;
    padding: 4px 10px;
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.term-tab.active {
    background: rgba(255, 255, 255, 0.08);
    color: var(--emerald);
}

.term-tab:hover:not(.active) {
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.03);
}

.terminal-body {
    padding: 1.25rem 1.4rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.7;
    min-height: 250px;
    max-height: 320px;
    overflow-y: auto;
}

.terminal-code {
    display: none;
}

.terminal-code.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.code-line {
    display: flex;
    gap: 12px;
}

.line-num {
    color: var(--text-dim);
    user-select: none;
    min-width: 20px;
    text-align: right;
}

.code-content {
    color: var(--text-muted);
}

.code-key { color: #38bdf8; }
.code-str { color: #a5f3fc; }
.code-val { color: var(--amber); }
.code-comment { color: #475569; font-style: italic; }
.code-keyword { color: #f472b6; }
.code-bool { color: var(--emerald); }

/* ==========================================================================
   METRICS BANNER (RECRUITER FAST SCAN)
   ========================================================================== */
.metrics-ribbon {
    position: relative;
    z-index: 2;
    padding: 1.5rem 2rem;
    background: rgba(10, 16, 25, 0.6);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    backdrop-filter: blur(12px);
}

.metrics-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
}

.metric-box {
    display: flex;
    flex-direction: column;
    padding: 0.5rem 1rem;
    border-right: 1px solid var(--border-subtle);
    transition: transform var(--transition-fast);
}

.metric-box:last-child {
    border-right: none;
}

.metric-box:hover {
    transform: translateY(-2px);
}

.metric-value {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--emerald);
    line-height: 1.2;
}

.metric-box:nth-child(2) .metric-value { color: #38bdf8; }
.metric-box:nth-child(3) .metric-value { color: var(--amber); }
.metric-box:nth-child(4) .metric-value { color: var(--purple); }
.metric-box:nth-child(5) .metric-value { color: #34d399; }
.metric-box:nth-child(6) .metric-value { color: #fb7185; }

.metric-label {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-top: 4px;
}

.metric-context {
    font-size: 0.68rem;
    color: var(--text-dim);
}

/* ==========================================================================
   GLOBAL SECTION STYLING
   ========================================================================== */
section {
    padding: 7rem 2rem;
    position: relative;
    z-index: 2;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 3.5rem;
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--emerald);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.section-eyebrow::before {
    content: '//';
    color: var(--emerald);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.02em;
}

.section-sub {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 650px;
}

/* ==========================================================================
   PROJECTS SECTION WITH FILTER TABS
   ========================================================================== */
#projects {
    background: rgba(7, 11, 17, 0.4);
}

.project-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 2.5rem;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    padding: 0.5rem 1.1rem;
    border-radius: 999px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    border-color: rgba(255, 255, 255, 0.2);
}

.filter-btn.active {
    background: rgba(0, 255, 157, 0.1);
    color: var(--emerald);
    border-color: var(--emerald-border);
    box-shadow: 0 0 15px rgba(0, 255, 157, 0.1);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1.75rem;
}

/* Project Card */
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    padding: 2rem;
    backdrop-filter: blur(14px);
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--emerald), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 255, 157, 0.3);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.8), 0 0 25px rgba(0, 255, 157, 0.08);
}

.project-card:hover::before {
    opacity: 1;
}

/* Grid Span Variations */
.project-card.featured-card {
    grid-column: span 12;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
    padding: 2.5rem;
    background: linear-gradient(135deg, rgba(14, 22, 33, 0.85) 0%, rgba(9, 14, 22, 0.75) 100%);
    border: 1px solid rgba(0, 255, 157, 0.2);
}

.project-card.featured-card::before {
    opacity: 0.8;
}

.project-card.standard-card {
    grid-column: span 6;
}

.project-card.compact-card {
    grid-column: span 4;
}

/* Card Header */
.card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.2rem;
}

.category-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.category-tag.emerald {
    background: var(--emerald-muted);
    color: var(--emerald);
    border: 1px solid var(--emerald-border);
}

.category-tag.blue {
    background: var(--blue-muted);
    color: var(--blue);
    border: 1px solid var(--blue-border);
}

.category-tag.amber {
    background: var(--amber-muted);
    color: var(--amber);
    border: 1px solid var(--amber-border);
}

.category-tag.purple {
    background: var(--purple-muted);
    color: var(--purple);
    border: 1px solid var(--purple-border);
}

.category-tag.red {
    background: var(--red-muted);
    color: var(--red);
    border: 1px solid var(--red-border);
}

.card-links {
    display: flex;
    gap: 8px;
}

.card-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.card-icon-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--emerald);
    border-color: var(--emerald-border);
}

/* Card Body */
.project-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.featured-card .project-title {
    font-size: 1.85rem;
}

.project-desc {
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* Card Stats & Highlights */
.project-stats-ribbon {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    margin-bottom: 1.5rem;
    padding: 0.9rem 1.1rem;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 8px;
}

.project-stat-item {
    display: flex;
    flex-direction: column;
}

.project-stat-num {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--emerald);
}

.project-stat-num.blue { color: #38bdf8; }
.project-stat-num.amber { color: var(--amber); }

.project-stat-tag {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

/* Architectural Invariant Box */
.arch-highlight-box {
    background: rgba(0, 255, 157, 0.03);
    border-left: 3px solid var(--emerald);
    padding: 0.8rem 1rem;
    margin-bottom: 1.5rem;
    border-radius: 0 6px 6px 0;
}

.arch-highlight-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--emerald);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
    font-weight: 600;
}

.arch-highlight-desc {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Tech Stack Tags */
.project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: auto;
    padding-top: 1rem;
}

.tech-chip {
    padding: 3px 9px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    transition: all var(--transition-fast);
}

.tech-chip:hover {
    border-color: var(--emerald-border);
    color: var(--emerald);
}

/* System Design Spec Button */
.btn-arch-modal {
    margin-top: 1.2rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(0, 255, 157, 0.05);
    border: 1px solid var(--emerald-border);
    border-radius: 6px;
    color: var(--emerald);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    align-self: flex-start;
}

.btn-arch-modal:hover {
    background: rgba(0, 255, 157, 0.12);
    box-shadow: 0 0 15px rgba(0, 255, 157, 0.2);
}

/* ==========================================================================
   SYSTEM DESIGN MODAL
   ========================================================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(3, 5, 8, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    background: #0b1018;
    border: 1px solid rgba(0, 255, 157, 0.25);
    border-radius: 16px;
    max-width: 800px;
    width: 100%;
    max-height: 88vh;
    overflow-y: auto;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9), 0 0 40px rgba(0, 255, 157, 0.1);
    transform: scale(0.95);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    padding: 2.5rem;
}

.modal-overlay.open .modal-container {
    transform: scale(1);
}

.modal-close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    width: 36px;
    height: 36px;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-color: var(--red);
}

.modal-header {
    margin-bottom: 2rem;
}

.modal-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--emerald);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}

.modal-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: #ffffff;
}

.modal-section-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--emerald);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 1.8rem 0 0.8rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-section-title::before {
    content: '//';
    color: var(--emerald);
}

.modal-diagram-block {
    background: #06090e;
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 1.2rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #38bdf8;
    line-height: 1.6;
    overflow-x: auto;
    margin: 1rem 0;
}

.modal-bullet-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.modal-bullet-list li {
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.modal-bullet-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--emerald);
    font-weight: 700;
}

.modal-bullet-list strong {
    color: var(--text);
}

/* ==========================================================================
   SKILLS & SYSTEMS ENGINEERING MATRIX
   ========================================================================== */
#skills {
    background: rgba(10, 15, 22, 0.3);
}

.skills-matrix {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.skill-domain-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 1.8rem;
    backdrop-filter: blur(14px);
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
}

.skill-domain-card:hover {
    border-color: rgba(0, 255, 157, 0.25);
    transform: translateY(-3px);
    box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.7);
}

.domain-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
}

.domain-icon {
    font-size: 1.2rem;
}

.domain-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: #ffffff;
}

.skill-badge-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.skill-badge:hover {
    background: rgba(0, 255, 157, 0.08);
    border-color: var(--emerald-border);
    color: var(--emerald);
    transform: translateY(-1px);
}

.skill-badge.starred {
    border-color: rgba(0, 255, 157, 0.3);
    color: var(--text);
    background: rgba(0, 255, 157, 0.05);
}

/* ==========================================================================
   EXPERIENCE & EDUCATION TIMELINE
   ========================================================================== */
#experience {
    background: rgba(7, 11, 17, 0.5);
}

.timeline-wrapper {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 2.5rem;
}

.timeline-spine {
    position: absolute;
    top: 10px;
    bottom: 0;
    left: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--emerald) 0%, rgba(0, 255, 157, 0.2) 60%, transparent 100%);
}

.timeline-entry {
    position: relative;
    margin-bottom: 3.5rem;
}

.timeline-marker {
    position: absolute;
    left: -2.5rem;
    top: 4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg);
    border: 3px solid var(--emerald);
    box-shadow: 0 0 12px var(--emerald);
}

.timeline-entry.current .timeline-marker {
    background: var(--emerald);
    animation: pulse 2s infinite;
}

.timeline-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 1.8rem 2rem;
    backdrop-filter: blur(14px);
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
}

.timeline-card:hover {
    border-color: var(--emerald-border);
    transform: translateX(4px);
}

.timeline-date-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--emerald);
    margin-bottom: 0.4rem;
    letter-spacing: 0.05em;
}

.timeline-role-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.25rem;
}

.timeline-org {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #38bdf8;
    margin-bottom: 1.2rem;
}

.timeline-details {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.timeline-details li {
    position: relative;
    padding-left: 1.4rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.timeline-details li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--emerald);
}

.timeline-details strong {
    color: var(--text);
}

/* ==========================================================================
   RECRUITER INSTANT CONNECT & CONTACT
   ========================================================================== */
#contact {
    background: rgba(10, 15, 22, 0.6);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-pitch-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    color: #ffffff;
    margin-bottom: 1.2rem;
}

.contact-pitch-title .accent {
    color: var(--emerald);
}

.contact-pitch-desc {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.quick-connect-pills {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.connect-pill {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.4rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text);
    transition: all var(--transition-fast);
}

.connect-pill:hover {
    border-color: var(--emerald-border);
    background: rgba(0, 255, 157, 0.04);
    transform: translateX(4px);
}

.pill-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pill-icon {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--emerald);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    background: rgba(0, 255, 157, 0.1);
}

.pill-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.pill-sub {
    font-size: 0.75rem;
    color: var(--text-dim);
}

.pill-action {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--emerald);
}

/* Contact Form */
.terminal-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 2.2rem;
    backdrop-filter: blur(16px);
    box-shadow: var(--card-shadow);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 1.25rem;
}

.form-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-dim);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.form-input, .form-textarea {
    background: rgba(6, 9, 14, 0.7);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    padding: 0.85rem 1.1rem;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    outline: none;
    transition: all var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
    border-color: var(--emerald);
    box-shadow: 0 0 0 2px rgba(0, 255, 157, 0.1);
}

.form-textarea {
    min-height: 130px;
    resize: vertical;
}

.form-status {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    margin-bottom: 1rem;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(0, 255, 157, 0.08);
    border: 1px solid var(--emerald-border);
    color: var(--emerald);
}

.form-status.error {
    display: block;
    background: rgba(248, 113, 113, 0.08);
    border: 1px solid var(--red-border);
    color: var(--red);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
    padding: 2.5rem 2rem;
    border-top: 1px solid var(--border-subtle);
    background: #04070a;
    position: relative;
    z-index: 2;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
}

.footer-brand {
    color: var(--text-muted);
}

.footer-brand .accent {
    color: var(--emerald);
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    background: rgba(14, 22, 33, 0.95);
    border: 1px solid var(--emerald-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8), 0 0 20px rgba(0, 255, 157, 0.2);
    backdrop-filter: blur(14px);
    border-radius: 8px;
    padding: 0.85rem 1.4rem;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideInToast 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    pointer-events: auto;
}

.toast.removing {
    animation: slideOutToast 0.3s ease forwards;
}

.toast-icon {
    color: var(--emerald);
}

/* ==========================================================================
   ANIMATIONS & RESPONSIVE BREAKPOINTS
   ========================================================================== */
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

@keyframes rotateRing {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInToast {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideOutToast {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(20px); }
}

/* Reveal Scroll Elements */
.reveal {
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1), transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Media Queries */
@media (max-width: 1200px) {
    .metrics-container {
        grid-template-columns: repeat(3, 1fr);
    }
    .metric-box:nth-child(3) {
        border-right: none;
    }
    .metric-box:nth-child(n+4) {
        border-top: 1px solid var(--border-subtle);
        padding-top: 1rem;
    }
    .skills-matrix {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .project-card.featured-card {
        grid-template-columns: 1fr;
    }
    .project-card.standard-card,
    .project-card.compact-card {
        grid-column: span 12;
    }
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    header {
        padding: 0.75rem 1rem;
    }
    .nav-container {
        padding: 0.75rem 1rem;
    }
    .nav-links {
        display: none;
    }
    .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #0b1118;
        border: 1px solid var(--border-subtle);
        border-radius: 12px;
        margin-top: 8px;
        padding: 1.5rem;
        gap: 1.2rem;
    }
    .mobile-toggle {
        display: block;
    }
    #hero {
        padding: 6.5rem 1.25rem 4rem;
    }
    section {
        padding: 4.5rem 1.25rem;
    }
    .metrics-container {
        grid-template-columns: repeat(2, 1fr);
    }
    .metric-box {
        border-right: none !important;
        border-bottom: 1px solid var(--border-subtle);
        padding: 0.8rem 0;
    }
    .skills-matrix {
        grid-template-columns: 1fr;
    }
    .footer-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}