/* ==========================================================================
   Oxyscapist Portfolio - Global Theme & Stylesheet
   ========================================================================== */

:root {
    --bg-dark: #080C14;
    --bg-card: rgba(15, 23, 42, 0.75);
    --bg-card-hover: rgba(30, 41, 59, 0.85);
    --border-color: rgba(255, 255, 255, 0.1);
    --border-highlight: rgba(99, 102, 241, 0.5);

    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;

    /* Accent Colors */
    --accent-indigo: #6366F1;
    --accent-violet: #8B5CF6;
    --accent-cyan: #06B6D4;
    --accent-emerald: #10B981;
    --accent-amber: #F59E0B;
    --accent-rose: #EC4899;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
}

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

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* Ambient Background Spheres */
.glow-sphere {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

.sphere-1 {
    top: -10%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-indigo) 0%, transparent 70%);
}

.sphere-2 {
    top: 40%;
    right: -10%;
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
}

.sphere-3 {
    bottom: -10%;
    left: 20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-violet) 0%, transparent 70%);
}

/* Layout Container */
.section-container, .hero-container, .nav-container, .footer-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 1;
}

/* Typography Helpers */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, #818CF8 0%, #C084FC 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gradient-text-alt {
    background: linear-gradient(135deg, #34D399 0%, #38BDF8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gradient-text-ai {
    background: linear-gradient(135deg, #F472B6 0%, #FB923C 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    z-index: 100;
    backdrop-filter: blur(16px);
    background: rgba(8, 12, 20, 0.85);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-violet));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFF;
    font-size: 1.1rem;
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.5);
}

.brand-logo .accent {
    color: var(--accent-cyan);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn-primary-sm) {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-links a:not(.btn-primary-sm):hover,
.nav-links a.active {
    color: var(--text-primary);
}

.mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.75rem;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-violet));
    color: #FFF;
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
}

.btn-primary-sm {
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-violet));
    color: #FFF;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: var(--transition);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.75rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.mini-arrow {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* Hero Section */
.hero {
    padding: 10rem 0 6rem;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.4rem 1.2rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #A5B4FC;
    margin-bottom: 1.5rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-emerald);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-emerald);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.4); opacity: 0.6; }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 750px;
    margin: 0 auto 2.5rem;
}

.hero-cta-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

/* Hero Stats Grid */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 950px;
    margin: 0 auto;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    backdrop-filter: blur(12px);
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--border-highlight);
    transform: translateY(-3px);
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Products Section */
.products-section {
    padding: 5rem 0;
}

.section-header {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.text-center { text-align: center; }

/* Filter Bar */
.filter-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.6rem 1.25rem;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

.filter-btn.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
    border-color: var(--accent-indigo);
    color: #FFF;
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.2);
}

.filter-count {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.1rem 0.5rem;
    border-radius: 20px;
    font-size: 0.75rem;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

/* Product Card */
.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(12px);
    transition: var(--transition);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-highlight);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.product-card:hover::before {
    background: linear-gradient(90deg, var(--accent-indigo), var(--accent-violet), var(--accent-cyan));
}

/* Category Accent Borders */
.product-card[data-category="b2b"] .card-icon {
    background: rgba(99, 102, 241, 0.15);
    color: #818CF8;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.product-card[data-category="pseo"] .card-icon {
    background: rgba(6, 182, 212, 0.15);
    color: #38BDF8;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.product-card[data-category="android"] .card-icon {
    background: rgba(16, 185, 129, 0.15);
    color: #34D399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.product-card[data-category="ai"] .card-icon {
    background: rgba(236, 72, 153, 0.15);
    color: #F472B6;
    border: 1px solid rgba(236, 72, 153, 0.3);
}

.card-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 30px;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.category-b2b { background: rgba(99, 102, 241, 0.15); color: #A5B4FC; }
.category-pseo { background: rgba(6, 182, 212, 0.15); color: #7DD3FC; }
.category-android { background: rgba(16, 185, 129, 0.15); color: #6EE7B7; }
.category-ai { background: rgba(236, 72, 153, 0.15); color: #FBCFE8; }

.card-icon {
    width: 54px;
    height: 54px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.4rem;
}

.card-title {
    font-size: 1.4rem;
    font-weight: 700;
}

.status-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.status-live { background: rgba(16, 185, 129, 0.2); color: #34D399; }
.status-live i { font-size: 0.5rem; }

.status-testing { background: rgba(245, 158, 11, 0.2); color: #FBBF24; }
.status-enterprise { background: rgba(139, 92, 246, 0.2); color: #C084FC; }

.card-tagline {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.card-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
}

.card-footer {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-card-primary {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-card-primary:hover {
    background: var(--accent-indigo);
    border-color: var(--accent-indigo);
    color: #FFF;
}

.btn-card-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 1rem;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.btn-card-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

/* About / Architecture Section */
.about-section {
    padding: 5rem 0;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3.5rem 3rem;
    backdrop-filter: blur(16px);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-title {
    font-size: 2.2rem;
    margin-bottom: 1.25rem;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.caps-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.cap-item {
    display: flex;
    gap: 1rem;
}

.cap-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-indigo);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.cap-item h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.cap-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.about-badge-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(6, 182, 212, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-md);
    padding: 2.5rem 2rem;
    text-align: center;
}

.domain-icon {
    font-size: 3rem;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
}

.about-badge-card h3 {
    font-size: 1.6rem;
    margin-bottom: 0.4rem;
}

.domain-sub {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.tech-stack-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.tech-stack-pills span {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-primary);
}

/* Footer Section */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 5rem 0 2rem;
    background: rgba(4, 7, 12, 0.9);
}

.footer-content {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 4rem;
}

.footer-title {
    font-size: 2.2rem;
    margin-bottom: 0.75rem;
}

.footer-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.footer-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.footer-btn.btn-highlight {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-violet));
    border-color: transparent;
}

.footer-btn.btn-highlight:hover {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
}

.scroll-top-btn {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition);
}

.scroll-top-btn:hover {
    background: var(--accent-indigo);
    border-color: var(--accent-indigo);
}

/* Modal Window */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(4, 7, 12, 0.85);
    backdrop-filter: blur(12px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

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

.modal-card {
    background: #0F172A;
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 650px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: rgba(255, 255, 255, 0.08);
    border: none;
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-header {
    padding: 2rem 2rem 1rem;
}

.modal-body {
    padding: 1rem 2rem 2rem;
    color: var(--text-secondary);
}

.modal-body h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin: 1.5rem 0 0.75rem;
}

.modal-body ul {
    list-style: none;
    padding-left: 0;
}

.modal-body li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.modal-body li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-emerald);
    font-weight: bold;
}

.modal-footer {
    padding: 1.25rem 2rem;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .hero-title { font-size: 2.8rem; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 2rem; }
    .caps-list { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: #0B0F19;
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transform: translateY(-150%);
        transition: var(--transition);
    }
    
    .nav-links.active {
        transform: translateY(0);
    }

    .mobile-toggle { display: block; }
    .hero-title { font-size: 2.2rem; }
    .hero-stats { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}