/* ═══════════════════════════════════════════
   Design Tokens
   ═══════════════════════════════════════════ */
:root {
    --primary-purple: #8B5CF6;
    --primary-blue: #3B82F6;
    --primary-pink: #EC4899;
    --accent-cyan: #06B6D4;
    --accent-green: #10B981;

    --bg-dark: #0A0A0F;
    --bg-darker: #050508;
    --bg-card: rgba(17, 17, 27, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.04);
    --bg-glass-hover: rgba(255, 255, 255, 0.08);

    --text-primary: #F5F5F7;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;

    --border-glass: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow-purple: 0 0 30px rgba(139, 92, 246, 0.15);
    --shadow-glow-blue: 0 0 30px rgba(59, 130, 246, 0.15);
    --shadow-glow-pink: 0 0 30px rgba(236, 72, 153, 0.15);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', sans-serif;

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { font-size: 16px; scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
strong { color: var(--text-primary); font-weight: 600; }

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0;
    margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0;
}

/* ═══════════════════════════════════════════
   Animated Background
   ═══════════════════════════════════════════ */
#particleCanvas {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0; pointer-events: none;
}

.background-gradient {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 0;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 50%, var(--bg-darker) 100%);
    pointer-events: none;
}

.background-gradient::before {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background:
        radial-gradient(circle at 20% 50%, rgba(139, 92, 246, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(59, 130, 246, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 40% 90%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
    animation: gradientShift 25s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(5%, -5%) rotate(120deg); }
    66% { transform: translate(-5%, 5%) rotate(240deg); }
}

/* ═══════════════════════════════════════════
   Gradient Text
   ═══════════════════════════════════════════ */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue), var(--primary-pink));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; background-size: 200% 200%;
    animation: gradientFlow 4s ease infinite;
}

@keyframes gradientFlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ═══════════════════════════════════════════
   Navigation
   ═══════════════════════════════════════════ */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10, 10, 15, 0.8); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-inner {
    max-width: 1200px; margin: 0 auto; padding: 1rem 2rem;
    display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-display); font-size: 1.5rem; font-weight: 700;
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.nav-links { display: flex; gap: 2rem; }
.nav-links a {
    color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
    transition: color var(--transition-fast); position: relative;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
    background: linear-gradient(90deg, var(--primary-purple), var(--primary-blue));
    transition: width var(--transition-base);
}
.nav-links a:hover::after { width: 100%; }

.nav-resume-btn {
    padding: 0.5rem 1.25rem; border: 1px solid var(--primary-purple);
    background: transparent; color: var(--primary-purple); border-radius: 8px;
    font-family: var(--font-sans); font-size: 0.85rem; font-weight: 500;
    cursor: pointer; transition: all var(--transition-base);
}
.nav-resume-btn:hover {
    background: rgba(139, 92, 246, 0.15); box-shadow: var(--shadow-glow-purple);
}

.nav-hamburger {
    display: none; flex-direction: column; gap: 5px; background: none;
    border: none; cursor: pointer; padding: 4px;
}
.nav-hamburger span {
    width: 24px; height: 2px; background: var(--text-primary);
    transition: all var(--transition-base);
}

/* ═══════════════════════════════════════════
   Buttons
   ═══════════════════════════════════════════ */
.btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.875rem 2rem; border-radius: 12px;
    font-family: var(--font-sans); font-size: 1rem; font-weight: 600;
    cursor: pointer; transition: all var(--transition-base);
    border: none; text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    color: white; box-shadow: var(--shadow-glow-purple);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 40px rgba(139, 92, 246, 0.3); }

.btn-secondary {
    background: var(--bg-glass); color: var(--text-primary);
    border: 1px solid var(--border-glass);
}
.btn-secondary:hover {
    background: var(--bg-glass-hover); border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-lg { padding: 1rem 2.5rem; font-size: 1.1rem; }

/* ═══════════════════════════════════════════
   Hero Section
   ═══════════════════════════════════════════ */
.hero {
    min-height: 100vh; display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: 6rem 2rem 4rem; position: relative; z-index: 1;
    text-align: center;
}

.hero-content { max-width: 900px; }

.hero-badge {
    display: inline-block; padding: 0.4rem 1.25rem; border-radius: 50px;
    background: rgba(139, 92, 246, 0.15); border: 1px solid rgba(139, 92, 246, 0.3);
    color: var(--primary-purple); font-size: 0.85rem; font-weight: 600;
    letter-spacing: 0.05em; margin-bottom: 1.5rem;
    animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.2); }
    50% { box-shadow: 0 0 0 12px rgba(139, 92, 246, 0); }
}

.hero-name {
    font-family: var(--font-display); font-size: clamp(3rem, 10vw, 5.5rem);
    font-weight: 700; letter-spacing: -0.03em; line-height: 1.1;
    margin-bottom: 0.75rem;
}

.hero-title {
    font-size: clamp(1.25rem, 3vw, 1.75rem); color: var(--text-secondary);
    font-weight: 300; margin-bottom: 1.5rem;
}

.hero-tagline {
    display: flex; align-items: center; justify-content: center;
    gap: 1rem; flex-wrap: wrap; margin-bottom: 2.5rem;
}

.tagline-item {
    color: var(--text-secondary); font-size: 0.95rem; font-weight: 500;
}

.tagline-divider {
    width: 4px; height: 4px; border-radius: 50%;
    background: var(--primary-purple); flex-shrink: 0;
}

.hero-cta { display: flex; gap: 1rem; justify-content: center; margin-bottom: 3rem; flex-wrap: wrap; }

.hero-contact-bar {
    display: flex; align-items: center; justify-content: center;
    gap: 1rem; flex-wrap: wrap; color: var(--text-muted); font-size: 0.85rem;
}
.hero-contact-bar a { color: var(--text-secondary); transition: color var(--transition-fast); }
.hero-contact-bar a:hover { color: var(--primary-purple); }

.bar-dot {
    width: 3px; height: 3px; border-radius: 50%;
    background: var(--text-muted); flex-shrink: 0;
}

.hero-scroll-indicator {
    position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
}
.scroll-line {
    width: 2px; height: 40px; background: linear-gradient(to bottom, var(--primary-purple), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ═══════════════════════════════════════════
   Sections
   ═══════════════════════════════════════════ */
.section {
    position: relative; z-index: 1; padding: 6rem 2rem;
}

.section-alt { background: rgba(0, 0, 0, 0.2); }

.section-inner { max-width: 1200px; margin: 0 auto; }

.section-title {
    font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700; text-align: center; margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center; color: var(--text-secondary); font-size: 1.1rem;
    margin-bottom: 3rem;
}

/* ═══════════════════════════════════════════
   About Section
   ═══════════════════════════════════════════ */
.about-card {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass); border-radius: 20px;
    padding: 2.5rem; margin-bottom: 3rem; max-width: 900px; margin-left: auto; margin-right: auto;
    box-shadow: var(--shadow-lg);
}
.about-card p {
    font-size: 1.1rem; line-height: 1.8; color: var(--text-secondary);
}

.stats-row {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
    max-width: 900px; margin: 0 auto;
}

.stat-card {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass); border-radius: 16px;
    padding: 2rem; text-align: center;
    transition: all var(--transition-base);
}
.stat-card:hover {
    border-color: var(--primary-purple); transform: translateY(-4px);
    box-shadow: var(--shadow-glow-purple);
}

.stat-number {
    font-family: var(--font-display); font-size: 3rem; font-weight: 700;
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    display: inline;
}
.stat-suffix {
    font-family: var(--font-display); font-size: 1.5rem; font-weight: 700;
    color: var(--primary-purple); display: inline;
}
.stat-label { color: var(--text-secondary); font-size: 0.85rem; margin-top: 0.5rem; }

/* ═══════════════════════════════════════════
   Skills Section
   ═══════════════════════════════════════════ */
.skills-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem;
    max-width: 1000px; margin: 2rem auto 0;
}

.skill-card {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass); border-radius: 20px;
    padding: 2rem; transition: all var(--transition-base);
    position: relative; overflow: hidden;
}
.skill-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--primary-purple), var(--primary-blue));
    opacity: 0; transition: opacity var(--transition-base);
}
.skill-card:hover::before { opacity: 1; }
.skill-card:hover {
    border-color: var(--border-hover); transform: translateY(-4px);
    box-shadow: var(--shadow-glow-purple);
}

.skill-card[data-glow="blue"]:hover { box-shadow: var(--shadow-glow-blue); }
.skill-card[data-glow="blue"]::before { background: linear-gradient(90deg, var(--primary-blue), var(--accent-cyan)); }
.skill-card[data-glow="pink"]:hover { box-shadow: var(--shadow-glow-pink); }
.skill-card[data-glow="pink"]::before { background: linear-gradient(90deg, var(--primary-pink), var(--primary-purple)); }
.skill-card[data-glow="cyan"]:hover { box-shadow: 0 0 30px rgba(6, 182, 212, 0.15); }
.skill-card[data-glow="cyan"]::before { background: linear-gradient(90deg, var(--accent-cyan), var(--accent-green)); }

.skill-icon {
    width: 56px; height: 56px; border-radius: 14px;
    background: rgba(139, 92, 246, 0.15); display: flex;
    align-items: center; justify-content: center;
    color: var(--primary-purple); margin-bottom: 1.25rem;
}
.skill-card[data-glow="blue"] .skill-icon { background: rgba(59, 130, 246, 0.15); color: var(--primary-blue); }
.skill-card[data-glow="pink"] .skill-icon { background: rgba(236, 72, 153, 0.15); color: var(--primary-pink); }
.skill-card[data-glow="cyan"] .skill-icon { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }

.skill-card h3 {
    font-family: var(--font-display); font-size: 1.15rem;
    margin-bottom: 1rem; color: var(--text-primary);
}
.skill-card ul { display: flex; flex-direction: column; gap: 0.5rem; }
.skill-card li {
    color: var(--text-secondary); font-size: 0.9rem;
    padding-left: 1rem; position: relative;
}
.skill-card li::before {
    content: ''; position: absolute; left: 0; top: 0.55em;
    width: 5px; height: 5px; border-radius: 50%;
    background: var(--primary-purple);
}
.skill-card[data-glow="blue"] li::before { background: var(--primary-blue); }
.skill-card[data-glow="pink"] li::before { background: var(--primary-pink); }
.skill-card[data-glow="cyan"] li::before { background: var(--accent-cyan); }

/* ═══════════════════════════════════════════
   Projects Section
   ═══════════════════════════════════════════ */
.projects-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass); border-radius: 20px;
    padding: 2rem; cursor: pointer; transition: all var(--transition-slow);
    position: relative; overflow: hidden;
}
.project-card-glow {
    position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
    opacity: 0; transition: opacity var(--transition-slow);
}
.project-card:hover .project-card-glow { opacity: 1; }
.project-card:hover {
    border-color: rgba(139, 92, 246, 0.3); transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), var(--shadow-glow-purple);
}

.project-card-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 1.25rem;
}
.project-icon {
    width: 52px; height: 52px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
}
.project-icon.purple { background: rgba(139, 92, 246, 0.15); color: var(--primary-purple); }
.project-icon.blue { background: rgba(59, 130, 246, 0.15); color: var(--primary-blue); }
.project-icon.pink { background: rgba(236, 72, 153, 0.15); color: var(--primary-pink); }

.project-status {
    padding: 0.25rem 0.75rem; border-radius: 50px; font-size: 0.75rem;
    font-weight: 600; letter-spacing: 0.03em;
}
.project-status.live {
    background: rgba(16, 185, 129, 0.15); color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.project-card h3 {
    font-family: var(--font-display); font-size: 1.35rem;
    margin-bottom: 0.25rem;
}
.project-subtitle {
    color: var(--primary-purple); font-size: 0.85rem; font-weight: 500;
    margin-bottom: 0.75rem;
}
.project-desc {
    color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6;
    margin-bottom: 1.25rem;
}

.project-tags { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.tag {
    padding: 0.2rem 0.65rem; background: rgba(139, 92, 246, 0.12);
    border: 1px solid rgba(139, 92, 246, 0.2); border-radius: 6px;
    font-size: 0.7rem; color: var(--primary-purple); font-weight: 500;
}

.project-impact {
    padding-top: 1rem; border-top: 1px solid var(--border-glass);
    color: var(--text-secondary); font-size: 0.85rem;
}
.impact-stat {
    font-family: var(--font-display); font-size: 1.5rem; font-weight: 700;
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    margin-right: 0.25rem;
}

/* ═══════════════════════════════════════════
   Timeline / Experience
   ═══════════════════════════════════════════ */
.timeline {
    max-width: 700px; margin: 2rem auto 0;
    position: relative; padding-left: 2rem;
}
.timeline::before {
    content: ''; position: absolute; left: 7px; top: 0; bottom: 0;
    width: 2px; background: linear-gradient(to bottom, var(--primary-purple), transparent);
}

.timeline-item { position: relative; margin-bottom: 2.5rem; }
.timeline-marker {
    position: absolute; left: -2rem; top: 0.25rem;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--bg-dark); border: 2px solid var(--text-muted);
}
.timeline-marker.active { border-color: var(--primary-purple); box-shadow: 0 0 12px rgba(139, 92, 246, 0.4); }
.timeline-marker.active::after {
    content: ''; position: absolute; top: 3px; left: 3px;
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--primary-purple);
}

.timeline-date {
    font-size: 0.8rem; color: var(--primary-purple); font-weight: 600;
    margin-bottom: 0.25rem; letter-spacing: 0.03em;
}
.timeline-content h3 {
    font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 0.5rem;
}
.timeline-content p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }

/* ═══════════════════════════════════════════
   Education
   ═══════════════════════════════════════════ */
.edu-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem;
    max-width: 700px; margin: 2rem auto 0;
}
.edu-card {
    background: var(--bg-card); border: 1px solid var(--border-glass);
    border-radius: 16px; padding: 1.5rem;
}
.edu-card h4 { font-family: var(--font-display); margin-bottom: 0.5rem; font-size: 1.05rem; }
.edu-card p, .edu-card li { color: var(--text-secondary); font-size: 0.9rem; }
.edu-details { margin-top: 0.5rem; font-size: 0.85rem; color: var(--text-muted); }
.edu-card ul { margin-top: 0.5rem; display: flex; flex-direction: column; gap: 0.3rem; }
.edu-card li { padding-left: 1rem; position: relative; }
.edu-card li::before {
    content: ''; position: absolute; left: 0; top: 0.55em;
    width: 5px; height: 5px; border-radius: 50%; background: var(--accent-green);
}

/* ═══════════════════════════════════════════
   Contact Section
   ═══════════════════════════════════════════ */
.contact-section { text-align: center; }
.contact-intro {
    color: var(--text-secondary); font-size: 1.15rem; max-width: 600px;
    margin: 0 auto 3rem; line-height: 1.7;
}

.contact-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
    max-width: 800px; margin: 0 auto 2.5rem;
}
.contact-card {
    display: flex; flex-direction: column; align-items: center; gap: 0.75rem;
    padding: 1.5rem; background: var(--bg-card); border: 1px solid var(--border-glass);
    border-radius: 16px; transition: all var(--transition-base);
}
.contact-card:hover {
    border-color: var(--primary-purple); transform: translateY(-4px);
    box-shadow: var(--shadow-glow-purple);
}
.contact-icon {
    width: 48px; height: 48px; border-radius: 12px;
    background: rgba(139, 92, 246, 0.15); color: var(--primary-purple);
    display: flex; align-items: center; justify-content: center;
}
.contact-card span { font-size: 0.85rem; color: var(--text-secondary); }

.contact-cta { margin-top: 1rem; }

/* ═══════════════════════════════════════════
   Footer
   ═══════════════════════════════════════════ */
.footer {
    position: relative; z-index: 1;
    padding: 2rem; text-align: center;
    color: var(--text-muted); font-size: 0.85rem;
    border-top: 1px solid var(--border-glass);
}

/* ═══════════════════════════════════════════
   Project Modal
   ═══════════════════════════════════════════ */
.project-modal {
    display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.85); backdrop-filter: blur(10px);
    z-index: 200; align-items: center; justify-content: center; padding: 2rem;
}
.project-modal.active { display: flex; }

.project-modal-content {
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass); border-radius: 24px;
    padding: 3rem; max-width: 700px; width: 100%; max-height: 85vh;
    overflow-y: auto; position: relative;
    animation: modalSlide 0.4s ease-out;
}

@keyframes modalSlide {
    from { opacity: 0; transform: scale(0.95) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.close-modal {
    position: absolute; top: 1.5rem; right: 1.5rem;
    width: 40px; height: 40px; background: var(--bg-glass);
    border: 1px solid var(--border-glass); border-radius: 50%;
    color: var(--text-primary); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-base);
}
.close-modal:hover {
    background: rgba(239, 68, 68, 0.2); border-color: #EF4444;
    transform: rotate(90deg);
}

#projectContent h2 {
    font-family: var(--font-display); font-size: 2rem; margin-bottom: 0.5rem;
}
#projectContent h3 {
    font-size: 1.2rem; margin: 1.5rem 0 0.75rem;
    color: var(--primary-purple); font-family: var(--font-display);
}
#projectContent p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 1rem; }

/* ═══════════════════════════════════════════
   Chatbot Widget
   ═══════════════════════════════════════════ */
.chatbot-toggle {
    position: fixed; bottom: 2rem; right: 2rem; z-index: 150;
    width: 60px; height: 60px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    border: none; color: white; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
    transition: all var(--transition-base);
}
.chatbot-toggle:hover { transform: scale(1.1); box-shadow: 0 4px 30px rgba(139, 92, 246, 0.5); }
.chatbot-toggle.hidden { display: none; }

.chatbot-pulse {
    position: absolute; top: -2px; right: -2px;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--accent-green);
    animation: chatPulse 2s ease-in-out infinite;
}

@keyframes chatPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
    50% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}

.chatbot-panel {
    position: fixed; bottom: 6rem; right: 2rem; z-index: 160;
    width: 420px; max-height: 550px;
    background: var(--bg-card); backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass); border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), var(--shadow-glow-purple);
    display: none; flex-direction: column; overflow: hidden;
    animation: chatSlideUp 0.3s ease-out;
}
.chatbot-panel.active { display: flex; }

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

/* Chat internals */
.chat-header {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 1rem 1.25rem; background: var(--bg-glass);
    border-bottom: 1px solid var(--border-glass);
}
.bot-avatar {
    width: 40px; height: 40px; border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    display: flex; align-items: center; justify-content: center;
    color: white; flex-shrink: 0;
}
.bot-info { flex: 1; }
.bot-name { font-family: var(--font-display); font-size: 1rem; font-weight: 600; }
.bot-status { display: flex; align-items: center; gap: 0.4rem; font-size: 0.8rem; color: var(--text-secondary); }
.status-dot {
    width: 7px; height: 7px; background: var(--accent-green);
    border-radius: 50%; animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.chat-close {
    width: 32px; height: 32px; border-radius: 8px; border: none;
    background: var(--bg-glass); color: var(--text-secondary);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-fast);
}
.chat-close:hover { background: rgba(239, 68, 68, 0.2); color: #EF4444; }

.messages {
    flex: 1; overflow-y: auto; padding: 1rem;
    display: flex; flex-direction: column; gap: 1rem;
    max-height: 320px; scroll-behavior: smooth;
}
.messages::-webkit-scrollbar { width: 6px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: var(--border-glass); border-radius: 3px; }

.message { display: flex; gap: 0.75rem; animation: messageSlide 0.3s ease-out; }
.message.user { flex-direction: row-reverse; }

@keyframes messageSlide {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.message-avatar {
    width: 30px; height: 30px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    display: flex; align-items: center; justify-content: center;
    font-size: 0.7rem; font-weight: 600; flex-shrink: 0; color: white;
}
.message.user .message-avatar {
    background: linear-gradient(135deg, var(--primary-pink), var(--accent-cyan));
}

.message-content {
    max-width: 75%; background: var(--bg-glass); border: 1px solid var(--border-glass);
    padding: 0.75rem 1rem; border-radius: 14px;
    font-size: 0.85rem; line-height: 1.5; color: var(--text-secondary);
}
.message-content a { color: var(--primary-purple); text-decoration: underline; }
.message.user .message-content {
    background: rgba(139, 92, 246, 0.15); border-color: rgba(139, 92, 246, 0.25);
}

.typing-indicator {
    display: none; align-items: center; gap: 0.5rem;
    padding: 0 1rem; margin-bottom: 0.5rem;
}
.typing-indicator.active { display: flex; }
.typing-indicator span {
    width: 7px; height: 7px; background: var(--text-muted);
    border-radius: 50%; animation: typing 1.4s infinite ease-in-out;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
    30% { transform: translateY(-8px); opacity: 1; }
}

.quick-replies {
    display: none; flex-wrap: wrap; gap: 0.4rem;
    padding: 0 1rem 0.5rem;
}
.quick-replies.active { display: flex; }
.quick-reply-btn {
    padding: 0.4rem 0.85rem; background: var(--bg-glass);
    border: 1px solid var(--border-glass); border-radius: 16px;
    color: var(--text-primary); font-size: 0.8rem; font-family: var(--font-sans);
    cursor: pointer; transition: all var(--transition-base);
}
.quick-reply-btn:hover {
    background: rgba(139, 92, 246, 0.15); border-color: var(--primary-purple);
}

.chat-input-container {
    display: flex; gap: 0.5rem; padding: 0.75rem 1rem;
    background: var(--bg-glass); border-top: 1px solid var(--border-glass);
}
.chat-input {
    flex: 1; background: var(--bg-card); border: 1px solid var(--border-glass);
    border-radius: 12px; padding: 0.6rem 0.85rem;
    color: var(--text-primary); font-size: 0.85rem; font-family: var(--font-sans);
    transition: all var(--transition-base);
}
.chat-input:focus { outline: none; border-color: var(--primary-purple); }
.chat-input::placeholder { color: var(--text-muted); }

.send-button {
    width: 40px; height: 40px; border-radius: 12px; border: none;
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    color: white; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-base); flex-shrink: 0;
}
.send-button:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-purple); }

.project-card-chat {
    background: var(--bg-glass); border: 1px solid var(--border-glass);
    border-radius: 12px; padding: 0.75rem; cursor: pointer;
    transition: all var(--transition-base);
}
.project-card-chat:hover { border-color: var(--primary-purple); background: var(--bg-glass-hover); }
.project-card-chat h3 { font-size: 0.9rem; margin-bottom: 0.25rem; font-family: var(--font-display); }
.project-card-chat p { font-size: 0.8rem; margin-bottom: 0.5rem; }

/* ═══════════════════════════════════════════
   Scroll Reveal Animation
   ═══════════════════════════════════════════ */
.reveal {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.reveal.visible {
    opacity: 1; transform: translateY(0);
}

/* ═══════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════ */
@media (max-width: 1024px) {
    .projects-grid { grid-template-columns: 1fr 1fr; }
    .stats-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links, .nav-resume-btn { display: none; }
    .nav-hamburger { display: flex; }

    .nav-links.active {
        display: flex; flex-direction: column; position: absolute;
        top: 100%; left: 0; right: 0; background: rgba(10, 10, 15, 0.98);
        padding: 1.5rem 2rem; gap: 1rem; border-bottom: 1px solid var(--border-glass);
    }

    .hero { padding: 5rem 1.5rem 3rem; }
    .hero-name { font-size: clamp(2.5rem, 12vw, 4rem); }
    .section { padding: 4rem 1.5rem; }
    .projects-grid { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: repeat(2, 1fr); }
    .edu-grid { grid-template-columns: 1fr; }

    .chatbot-panel { width: calc(100vw - 2rem); right: 1rem; bottom: 5rem; }
}

@media (max-width: 480px) {
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
    .hero-tagline { flex-direction: column; gap: 0.5rem; }
    .tagline-divider { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .reveal { opacity: 1; transform: none; }
}