/*
    Seenivasan Premium Founder Portfolio
    Apple/Framer Inspired Design
*/

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

:root {
    --primary: #0071e3;
    --bg: #ffffff;
    --text: #1d1d1f;
    --text-sec: #86868b;
    --accent: #f5f5f7;
    --card-bg: #ffffff;
    --card-border: rgba(0,0,0,0.1);
    --shadow: 0 20px 40px rgba(0,0,0,0.04);
    --transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.dark-mode {
    --bg: #000000;
    --text: #f5f5f7;
    --text-sec: #a1a1a6;
    --accent: #1d1d1f;
    --card-bg: #1d1d1f;
    --card-border: rgba(255,255,255,0.1);
    --shadow: 0 20px 40px rgba(0,0,0,0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.5;
    overflow-x: hidden;
    transition: background-color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1 { font-size: clamp(3rem, 8vw, 5.5rem); font-weight: 800; line-height: 1.05; letter-spacing: -0.03em; }
h2 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; letter-spacing: -0.02em; }
h3 { font-size: 1.75rem; font-weight: 600; }
p { font-size: 1.25rem; color: var(--text-sec); }

/* Navigation */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--card-border);
}

#navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo { font-weight: 700; font-size: 1.25rem; letter-spacing: -0.02em; text-decoration: none; color: var(--text); }

.nav-right { display: flex; align-items: center; gap: 2.5rem; }

.nav-links { display: flex; gap: 2rem; list-style: none; }

.nav-links a {
    text-decoration: none;
    color: var(--text-sec);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--text);
    color: var(--bg);
    padding: 0.6rem 1.2rem;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.nav-cta:hover { opacity: 0.9; transform: scale(1.05); }

#theme-toggle {
    background: var(--accent);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mode-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--text);
}

/* Hero */
.hero { padding: 160px 0 100px; }
.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 80px;
}

.founder-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--accent);
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.hero-intro { margin: 2rem 0 3rem; max-width: 500px; }

.hero-actions { display: flex; align-items: center; gap: 2rem; }

.btn-premium {
    background: var(--primary);
    color: #fff;
    padding: 1.2rem 2.5rem;
    border-radius: 100px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn-premium:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0, 113, 227, 0.3); }

.btn-large { padding: 1.5rem 3.5rem; font-size: 1.25rem; }

.btn-link { font-weight: 600; text-decoration: none; color: var(--text); display: flex; align-items: center; gap: 0.5rem; }

.product-collage {
    position: relative;
    width: 100%;
    height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1000px;
}

.collage-card {
    position: absolute;
    width: 85%;
    aspect-ratio: 16/10;
    border-radius: 20px;
    overflow: hidden;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1),
                box-shadow 0.3s ease,
                opacity 0.3s ease,
                z-index 0.3s step-end;
    backdrop-filter: blur(10px);
    cursor: pointer;
    user-select: none;
}

.card-top {
    z-index: 2;
    transform: translateY(-30px) translateX(-20px) rotate(-2deg);
}

.card-bottom {
    z-index: 1;
    transform: translateY(30px) translateX(20px) rotate(2deg);
    opacity: 0.8;
}

/* Active State for Hover/Touch */
.collage-card.is-active {
    z-index: 10 !important;
    transform: scale(1.08) !important;
    box-shadow: 0 50px 100px rgba(0,0,0,0.3);
    opacity: 1 !important;
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1),
                box-shadow 0.3s ease,
                opacity 0.3s ease,
                z-index 0s;
}

.collage-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

/* Product Fallback Styles */
.product-fallback-1::after {
    content: "DraftMyDocu Platform";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 700;
    color: var(--primary);
    font-size: 1.2rem;
}

.product-fallback-2::after {
    content: "GetBizora Platform";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 700;
    color: var(--primary);
    font-size: 1.2rem;
}

@media (max-width: 1024px) {
    .product-collage { height: 350px; margin-top: 2rem; }
}

@media (max-width: 768px) {
    .product-collage { height: 300px; }
    .collage-card { width: 90%; }
}

/* Stats */
.stats-premium {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 3rem 2rem;
    border-radius: 30px;
    border: 1px solid var(--card-border);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: var(--transition);
}

.clickable-card {
    cursor: pointer;
}

.clickable-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.stat-sub {
    font-size: 0.85rem;
    color: var(--text-sec);
    margin-top: 0.5rem;
    display: block;
}

.stat-action {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 600;
    margin-top: 1rem;
    display: block;
}

.exp-sub {
    font-weight: 600;
    color: var(--text);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.stat-num {
    display: block;
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.stat-label { font-weight: 600; color: var(--text-sec); text-transform: uppercase; font-size: 0.8rem; letter-spacing: 0.1em; }

/* Featured Work */
.featured-work { padding: 120px 0; background: var(--accent); }

.section-tag { font-weight: 700; color: var(--primary); text-transform: uppercase; font-size: 0.8rem; letter-spacing: 0.1em; margin-bottom: 1rem; }
.section-title { margin-bottom: 4rem; }

.project-showcase { display: grid; grid-template-columns: 1fr; gap: 4rem; }

.showcase-item {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    background: var(--card-bg);
    border-radius: 40px;
    overflow: hidden;
    border: 1px solid var(--card-border);
    transition: var(--transition);
}

.showcase-item:hover { transform: translateY(-10px); box-shadow: var(--shadow); }

.showcase-img { height: 500px; background: #f0f0f2; overflow: hidden; position: relative; }
.showcase-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s ease; }
.showcase-item:hover .showcase-img img { transform: scale(1.05); }

.showcase-content { padding: 4rem; display: flex; flex-direction: column; justify-content: center; }

.project-meta { font-weight: 600; color: var(--text-sec); margin-bottom: 1rem; }

.showcase-content h3 { font-size: 2.5rem; margin-bottom: 1.5rem; }
.showcase-content p { margin-bottom: 2.5rem; }

.btn-outline {
    display: inline-block;
    padding: 1rem 2rem;
    border: 1px solid var(--text);
    border-radius: 100px;
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    align-self: flex-start;
    transition: var(--transition);
}

.btn-outline:hover { background: var(--text); color: var(--bg); }

/* Marketplace */
.marketplace { padding: 120px 0; }
.marketplace-header { text-align: center; margin-bottom: 5rem; }

.product-grid-premium {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.product-item {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 30px;
    border: 1px solid var(--card-border);
    transition: var(--transition);
}

.product-item:hover { border-color: var(--primary); }

.p-icon { font-size: 2.5rem; margin-bottom: 1.5rem; display: block; }
.product-item h4 { font-size: 1.25rem; font-weight: 600; }

/* Experience */
.experience-founder { padding: 120px 0; background: var(--accent); }
.experience-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 6rem; }

.exp-list { display: flex; flex-direction: column; gap: 4rem; }
.exp-item { display: grid; grid-template-columns: 120px 1fr; gap: 2rem; }
.exp-year { font-weight: 700; color: var(--text-sec); }
.exp-info h3 { margin-bottom: 1.5rem; }
.exp-tasks { list-style: none; }
.exp-tasks li { position: relative; padding-left: 1.5rem; margin-bottom: 0.75rem; color: var(--text-sec); }
.exp-tasks li::before { content: "•"; position: absolute; left: 0; color: var(--primary); font-weight: bold; }

/* Skills */
.skills-premium { padding: 120px 0; }
.skills-grid-premium {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 4rem;
}

.skill-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 30px;
    border: 1px solid var(--card-border);
}

.skill-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.skill-icon { font-size: 1.5rem; }

/* Contact */
.contact-founder { padding-bottom: 120px; }
.contact-card-premium {
    background: var(--text);
    color: var(--bg);
    padding: 6rem;
    border-radius: 50px;
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.contact-header h2 { font-size: 4.5rem; line-height: 1.1; margin-bottom: 2rem; }
.contact-header p { font-size: 1.5rem; color: var(--text-sec); }

.contact-footer-simple { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 3rem; }
.contact-direct p { margin-bottom: 0.5rem; font-size: 1.1rem; }
.contact-direct strong { color: var(--primary); }

/* Footer */
.footer-minimal { padding: 40px 0; border-top: 1px solid var(--card-border); }
.footer-minimal .container { display: flex; justify-content: space-between; align-items: center; }
.f-right { display: flex; gap: 2rem; }
.f-right a { text-decoration: none; color: var(--text-sec); font-weight: 500; }

/* Animations */
.reveal { opacity: 0; transform: translateY(40px); transition: all 1s cubic-bezier(0.2, 0.8, 0.2, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* Burger */
.burger { display: none; cursor: pointer; }
.burger span { display: block; width: 25px; height: 2px; background: var(--text); margin: 6px 0; transition: 0.4s; }

/* Responsive Mobile View */
@media (max-width: 1024px) {
    .hero-grid, .showcase-item, .experience-grid { grid-template-columns: 1fr; gap: 3rem; }
    .hero-visual { order: 2; max-width: 500px; margin: 2rem auto 0; width: 100%; display: flex; }
    .contact-card-premium { padding: 3rem; }
    .contact-header h2 { font-size: 3rem; }
    .product-grid-premium, .skills-grid-premium, .stats-premium { grid-template-columns: repeat(2, 1fr); }
    .contact-footer-simple { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 768px) {
    .nav-links, .nav-cta { display: none; }
    .burger { display: block; }
    .stats-premium { grid-template-columns: 1fr; }
    .product-grid-premium, .skills-grid-premium { grid-template-columns: 1fr; }
    .showcase-content { padding: 2.5rem; }
    .showcase-img { height: 300px; }
    .contact-card-premium { border-radius: 30px; }
    .hero-visual { max-width: 320px; }
}