@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #10b981;
    --accent: #8b5cf6;
    --dark: #0f172a;
    --light: #f8fafc;
}

* {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3 {
    font-family: 'Space Grotesk', sans-serif;
}

/* Dark mode styles */
.dark body {
    background-color: #0f172a;
    color: #e2e8f0;
}

.dark .nav-bg {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
}

.nav-bg {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #4facfe 75%, #00f2fe 100%);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradient 8s ease infinite;
}

.gradient-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-size: 200% 200%;
    animation: gradient 8s ease infinite;
}

/* Animated background blobs */
.blob {
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    filter: blur(40px);
    opacity: 0.7;
}

.card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s;
}

.card:hover::before {
    left: 100%;
}

.card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.dark .card:hover {
    box-shadow: 0 20px 40px rgba(139, 92, 246, 0.3);
}

.skill-pill {
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
}

.skill-pill:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

.timeline-item {
    position: relative;
    padding-left: 2rem;
}

.timeline-item:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: linear-gradient(180deg, #3b82f6, #8b5cf6);
    border-radius: 2px;
}

.timeline-dot {
    position: absolute;
    left: -8px;
    top: 10px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
    animation: pulse-slow 2s infinite;
    z-index: 2;
}

.tag {
    transition: all 0.3s ease;
    cursor: pointer;
}

.tag:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.project-card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
    border: 1px solid rgba(0,0,0,0.06);
}

.project-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.18), 0 0 0 1px rgba(99,102,241,0.15);
}

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

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(155deg, rgba(7, 7, 30, 0.97) 0%, rgba(18, 8, 52, 0.98) 60%, rgba(5, 25, 45, 0.97) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: white;
    padding: 1.75rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.25rem;
}

.contact-input {
    transition: all 0.3s ease;
}

.contact-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
}

.nav-link {
    position: relative;
    transition: all 0.3s ease;
}

.nav-link:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 50%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

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

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

/* Glassmorphism effect */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark .glass {
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Floating animation for icons */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.floating {
    animation: float 3s ease-in-out infinite;
}

/* Button hover effects */
.btn-primary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

/* Theme toggle button */
.theme-toggle {
    width: 60px;
    height: 30px;
    background: #cbd5e1;
    border-radius: 30px;
    position: relative;
    cursor: pointer;
    transition: background 0.3s;
}

.dark .theme-toggle {
    background: #475569;
}

.theme-toggle-circle {
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 3px;
    transition: transform 0.3s;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.dark .theme-toggle-circle {
    transform: translateX(30px);
    background: #1e293b;
}

/* Scroll indicator */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    z-index: 9999;
    transition: width 0.1s;
}

/* Network Canvas */
#network-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

/* ===== PROJECT OVERLAY TYPOGRAPHY ===== */
.project-overlay h4 {
    font-size: 0.7rem !important;
    font-weight: 700 !important;
    letter-spacing: 0.12em !important;
    text-transform: uppercase !important;
    color: #a5b4fc !important;
    margin-bottom: 0.75rem !important;
    padding-bottom: 0.5rem !important;
    border-bottom: 1px solid rgba(165,180,252,0.25) !important;
}

.project-overlay ul {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.project-overlay ul li {
    list-style: none !important;
    display: flex !important;
    align-items: flex-start !important;
    gap: 0.5rem !important;
    font-size: 0.78rem !important;
    color: #cbd5e1 !important;
    line-height: 1.5 !important;
    padding: 0 !important;
}

.project-overlay ul li::before {
    content: '›' !important;
    color: #818cf8 !important;
    font-weight: 900 !important;
    font-size: 1rem !important;
    flex-shrink: 0 !important;
    line-height: 1.4 !important;
}

.project-overlay a {
    display: inline-flex !important;
    align-items: center !important;
    gap: 0.5rem !important;
    margin-top: 1rem !important;
    padding: 0.55rem 1.1rem !important;
    background: linear-gradient(135deg, #6366f1, #8b5cf6) !important;
    color: white !important;
    border-radius: 0.5rem !important;
    font-size: 0.78rem !important;
    font-weight: 600 !important;
    text-decoration: none !important;
    transition: all 0.2s ease !important;
    align-self: flex-start !important;
    letter-spacing: 0.03em !important;
    box-shadow: 0 4px 15px rgba(99,102,241,0.4) !important;
}

.project-overlay a:hover {
    background: linear-gradient(135deg, #4f46e5, #7c3aed) !important;
    transform: translateX(4px) !important;
    box-shadow: 0 6px 20px rgba(99,102,241,0.6) !important;
}

/* ===== SKILL CATEGORY CARD THEMING ===== */
.skill-cat-ai   { background: linear-gradient(135deg,#faf5ff,#f5f3ff) !important; border:1px solid #e9d5ff !important; }
.skill-cat-nlp  { background: linear-gradient(135deg,#f0fdf4,#dcfce7) !important; border:1px solid #bbf7d0 !important; }
.skill-cat-ml   { background: linear-gradient(135deg,#eff6ff,#dbeafe) !important; border:1px solid #bfdbfe !important; }
.skill-cat-prog { background: linear-gradient(135deg,#eef2ff,#e0e7ff) !important; border:1px solid #c7d2fe !important; }
.skill-cat-web  { background: linear-gradient(135deg,#ecfeff,#cffafe) !important; border:1px solid #a5f3fc !important; }
.skill-cat-mobile { background: linear-gradient(135deg,#fdf4ff,#fae8ff) !important; border:1px solid #f5d0fe !important; }
.skill-cat-db   { background: linear-gradient(135deg,#fefce8,#fef9c3) !important; border:1px solid #fde68a !important; }
.skill-cat-viz  { background: linear-gradient(135deg,#ecfdf5,#d1fae5) !important; border:1px solid #a7f3d0 !important; }
.skill-cat-devops { background: linear-gradient(135deg,#f8fafc,#f1f5f9) !important; border:1px solid #e2e8f0 !important; }
.skill-cat-productivity { background: linear-gradient(135deg,#fff7ed,#ffedd5) !important; border:1px solid #fed7aa !important; }

.skill-cat-ai   .skill-pill { background:#f5f3ff !important; border-color:#c4b5fd !important; color:#6d28d9 !important; }
.skill-cat-nlp  .skill-pill { background:#f0fdf4 !important; border-color:#86efac !important; color:#15803d !important; }
.skill-cat-ml   .skill-pill { background:#eff6ff !important; border-color:#93c5fd !important; color:#1d4ed8 !important; }
.skill-cat-prog .skill-pill { background:#eef2ff !important; border-color:#a5b4fc !important; color:#4338ca !important; }
.skill-cat-web  .skill-pill { background:#ecfeff !important; border-color:#67e8f9 !important; color:#0e7490 !important; }
.skill-cat-mobile .skill-pill { background:#fdf4ff !important; border-color:#e879f9 !important; color:#a21caf !important; }
.skill-cat-db   .skill-pill { background:#fefce8 !important; border-color:#fde047 !important; color:#854d0e !important; }
.skill-cat-viz  .skill-pill { background:#ecfdf5 !important; border-color:#6ee7b7 !important; color:#065f46 !important; }
.skill-cat-devops .skill-pill { background:#f1f5f9 !important; border-color:#94a3b8 !important; color:#334155 !important; }
.skill-cat-productivity .skill-pill { background:#fff7ed !important; border-color:#fdba74 !important; color:#9a3412 !important; }

/* ===== EXPERIENCE CARD ACCENTS ===== */
.exp-zalion     { border-left: 4px solid #10b981 !important; }
.exp-siemens    { border-left: 4px solid #3b82f6 !important; }
.exp-iab        { border-left: 4px solid #8b5cf6 !important; }
.exp-basf       { border-left: 4px solid #f59e0b !important; }
.exp-shapeai    { border-left: 4px solid #ec4899 !important; }
.exp-hoda       { border-left: 4px solid #06b6d4 !important; }

.exp-zalion:hover  { box-shadow: 0 20px 45px rgba(16,185,129,0.12) !important; }
.exp-siemens:hover { box-shadow: 0 20px 45px rgba(59,130,246,0.12) !important; }
.exp-iab:hover     { box-shadow: 0 20px 45px rgba(139,92,246,0.12) !important; }
.exp-basf:hover    { box-shadow: 0 20px 45px rgba(245,158,11,0.12) !important; }
.exp-shapeai:hover { box-shadow: 0 20px 45px rgba(236,72,153,0.12) !important; }
.exp-hoda:hover    { box-shadow: 0 20px 45px rgba(6,182,212,0.12) !important; }

/* ===== EXPERIENCE COMPANY BADGE DOTS ===== */
.exp-dot-zalion  { background: #10b981; }
.exp-dot-siemens { background: #3b82f6; }
.exp-dot-iab     { background: #8b5cf6; }
.exp-dot-basf    { background: #f59e0b; }
.exp-dot-shapeai { background: #ec4899; }
.exp-dot-hoda    { background: #06b6d4; }

/* ===== SECTION HEADER BADGE ===== */
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.9rem;
    background: linear-gradient(135deg,rgba(99,102,241,0.1),rgba(139,92,246,0.1));
    border: 1px solid rgba(99,102,241,0.25);
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #6366f1;
    margin-bottom: 0.75rem;
}

/* ===== PROJECT CARD TAG PILLS ===== */
.tag {
    font-weight: 500;
    letter-spacing: 0.02em;
    border-radius: 0.375rem;
}

/* ===== DARK MODE SKILL CATEGORY ADJUSTMENTS ===== */
.dark .skill-cat-ai   { background: linear-gradient(135deg,rgba(109,40,217,0.15),rgba(91,33,182,0.1)) !important; border-color:rgba(139,92,246,0.3) !important; }
.dark .skill-cat-nlp  { background: linear-gradient(135deg,rgba(21,128,61,0.15),rgba(22,163,74,0.1)) !important; border-color:rgba(74,222,128,0.3) !important; }
.dark .skill-cat-ml   { background: linear-gradient(135deg,rgba(29,78,216,0.15),rgba(37,99,235,0.1)) !important; border-color:rgba(96,165,250,0.3) !important; }
.dark .skill-cat-prog { background: linear-gradient(135deg,rgba(67,56,202,0.15),rgba(79,70,229,0.1)) !important; border-color:rgba(129,140,248,0.3) !important; }
.dark .skill-cat-web  { background: linear-gradient(135deg,rgba(14,116,144,0.15),rgba(8,145,178,0.1)) !important; border-color:rgba(34,211,238,0.3) !important; }
.dark .skill-cat-mobile { background: linear-gradient(135deg,rgba(162,28,175,0.15),rgba(134,25,143,0.1)) !important; border-color:rgba(232,121,249,0.3) !important; }
.dark .skill-cat-db   { background: linear-gradient(135deg,rgba(133,77,14,0.15),rgba(161,98,7,0.1)) !important; border-color:rgba(250,204,21,0.3) !important; }
.dark .skill-cat-viz  { background: linear-gradient(135deg,rgba(6,95,70,0.15),rgba(4,120,87,0.1)) !important; border-color:rgba(52,211,153,0.3) !important; }
.dark .skill-cat-devops { background: linear-gradient(135deg,rgba(51,65,85,0.3),rgba(30,41,59,0.2)) !important; border-color:rgba(148,163,184,0.3) !important; }
.dark .skill-cat-productivity { background: linear-gradient(135deg,rgba(154,52,18,0.15),rgba(180,83,9,0.1)) !important; border-color:rgba(251,146,60,0.3) !important; }

.dark .skill-cat-ai   .skill-pill { background:rgba(109,40,217,0.2) !important; border-color:rgba(167,139,250,0.4) !important; color:#c4b5fd !important; }
.dark .skill-cat-nlp  .skill-pill { background:rgba(21,128,61,0.2) !important; border-color:rgba(74,222,128,0.4) !important; color:#86efac !important; }
.dark .skill-cat-ml   .skill-pill { background:rgba(29,78,216,0.2) !important; border-color:rgba(96,165,250,0.4) !important; color:#93c5fd !important; }
.dark .skill-cat-prog .skill-pill { background:rgba(67,56,202,0.2) !important; border-color:rgba(129,140,248,0.4) !important; color:#a5b4fc !important; }
.dark .skill-cat-web  .skill-pill { background:rgba(14,116,144,0.2) !important; border-color:rgba(34,211,238,0.4) !important; color:#67e8f9 !important; }
.dark .skill-cat-mobile .skill-pill { background:rgba(162,28,175,0.2) !important; border-color:rgba(232,121,249,0.4) !important; color:#f0abfc !important; }
.dark .skill-cat-db   .skill-pill { background:rgba(133,77,14,0.2) !important; border-color:rgba(250,204,21,0.4) !important; color:#fde047 !important; }
.dark .skill-cat-viz  .skill-pill { background:rgba(6,95,70,0.2) !important; border-color:rgba(52,211,153,0.4) !important; color:#6ee7b7 !important; }
.dark .skill-cat-devops .skill-pill { background:rgba(51,65,85,0.3) !important; border-color:rgba(148,163,184,0.4) !important; color:#cbd5e1 !important; }
.dark .skill-cat-productivity .skill-pill { background:rgba(154,52,18,0.2) !important; border-color:rgba(251,146,60,0.4) !important; color:#fdba74 !important; }