/*
Theme Name: CINELED - Cinematic LED Portfolio Theme
Theme URI: https://ledso1.com
Author: NSM LED
Author URI: https://ledso1.com
Description: Premium cinematic portfolio theme for LED display companies
Version: 3.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: cineled
Tags: portfolio, cinema, led, vietnam
*/

/* ==========================================================================
   CSS VARIABLES
   ========================================================================== */
:root {
    /* Colors */
    --bg-primary: #050505;
    --bg-secondary: #0a0a0a;
    --bg-elevated: #141414;
    --text-primary: #fafafa;
    --text-secondary: #888888;
    --accent: #FFB800;
    --accent-hover: #FFC933;
    --border: #222222;

    /* Gradients */
    --gradient-warm: linear-gradient(135deg, #FFB800 0%, #FF6B00 100%);
    --gradient-dark: linear-gradient(180deg, rgba(5,5,5,0) 0%, rgba(5,5,5,0.8) 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(5,5,5,0.3) 0%, rgba(5,5,5,0.9) 100%);

    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 8rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s ease;
    --transition-slow: 0.6s ease;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
}

/* ==========================================================================
   RESET & BASE
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

ul, ol {
    list-style: none;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    text-align: center;
    margin-bottom: var(--space-lg);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--gradient-warm);
    margin: var(--space-sm) auto 0;
    border-radius: 2px;
}

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

/* ==========================================================================
   LAYOUT
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container-narrow {
    max-width: 900px;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-accent {
    background: var(--gradient-warm);
    color: #000;
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 184, 0, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--text-primary);
    color: var(--text-primary);
}

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

.btn-dark {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-dark:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(5,5,5,0.95) 0%, rgba(5,5,5,0) 100%);
    transition: var(--transition-smooth);
}

.site-header.scrolled {
    background: rgba(5, 5, 5, 0.98);
    backdrop-filter: blur(10px);
}

.header-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
}

.site-branding .site-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.site-branding .site-title:hover {
    color: var(--accent);
}

/* Desktop Navigation */
.main-navigation {
    display: flex;
    align-items: center;
}

.main-navigation .nav-menu {
    display: flex;
    gap: var(--space-md);
}

.main-navigation .nav-menu li a {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    position: relative;
}

.main-navigation .nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition-smooth);
}

.main-navigation .nav-menu li a:hover::after,
.main-navigation .nav-menu li.current-menu-item a::after {
    width: 100%;
}

.main-navigation .nav-menu li a:hover,
.main-navigation .nav-menu li.current-menu-item a {
    color: var(--text-primary);
}

/* Header CTA */
.header-cta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.btn-phone {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--gradient-warm);
    color: #000;
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.btn-phone:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 184, 0, 0.3);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle svg {
    width: 28px;
    height: 28px;
    stroke: var(--text-primary);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 1001;
    padding: var(--space-xl) var(--space-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-nav-close svg {
    width: 32px;
    height: 32px;
    stroke: var(--text-primary);
}

.mobile-nav .nav-menu {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
}

.mobile-nav .nav-menu li a {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--text-primary);
}

.mobile-nav .nav-menu li a:hover {
    color: var(--accent);
}

@media (max-width: 991px) {
    .desktop-only { display: none !important; }
    .menu-toggle { display: block; }
    .mobile-nav { display: block; }
    .header-cta .btn-phone span { display: none; }
}

/* Header Spacer */
.header-spacer {
    height: 80px;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-overlay);
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    padding: 0 var(--space-md);
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--accent);
    margin-bottom: var(--space-sm);
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-md);
}

.hero-title .accent {
    color: var(--accent);
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    animation: bounce 2s infinite;
}

.hero-scroll svg {
    width: 24px;
    height: 24px;
    stroke: var(--accent);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ==========================================================================
   STATS SECTION
   ========================================================================== */
.stats-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: var(--space-lg) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    text-align: center;
}

.stat-item {
    padding: var(--space-sm);
}

.stat-number {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.projects-section {
    padding: var(--space-xl) 0;
    background: var(--bg-primary);
}

.projects-featured {
    margin-bottom: var(--space-xl);
}

.projects-featured-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 280px);
    gap: var(--space-md);
}

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
}

.project-card:first-child {
    grid-column: span 2;
    grid-row: span 2;
}

.project-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover img {
    transform: scale(1.08);
}

.project-card-overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient-overlay);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-md);
    opacity: 0;
    transition: var(--transition-smooth);
}

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

.project-category-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent);
    color: #000;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    width: fit-content;
}

.project-card-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.project-card:first-child .project-card-title {
    font-size: 1.75rem;
}

.project-card-location {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.project-card-link {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    width: 40px;
    height: 40px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition-smooth);
}

.project-card:hover .project-card-link {
    opacity: 1;
    transform: translateY(0);
}

.project-card-link svg {
    width: 18px;
    height: 18px;
    stroke: #000;
}

@media (max-width: 991px) {
    .projects-featured-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }
    .project-card:first-child {
        grid-column: span 2;
        grid-row: span 1;
        height: 300px;
    }
}

@media (max-width: 576px) {
    .projects-featured-grid {
        grid-template-columns: 1fr;
    }
    .project-card:first-child {
        grid-column: span 1;
    }
}

/* All Projects Grid */
.projects-filter {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #000;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.project-grid-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    aspect-ratio: 4/3;
}

.project-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-grid-item:hover img {
    transform: scale(1.08);
}

.project-grid-overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient-overlay);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-sm);
    opacity: 0;
    transition: var(--transition-smooth);
}

.project-grid-item:hover .project-grid-overlay {
    opacity: 1;
}

@media (max-width: 991px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */
.services-section {
    padding: var(--space-xl) 0;
    background: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.service-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
    transition: var(--transition-smooth);
}

.service-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-radius: 50%;
    border: 2px solid var(--border);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--accent);
}

.service-card:hover .service-icon {
    border-color: var(--accent);
    background: rgba(255, 184, 0, 0.1);
}

.service-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.service-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 991px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */
.cta-section {
    padding: var(--space-2xl) 0;
    background: var(--gradient-warm);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23000000' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    position: relative;
    text-align: center;
    color: #000;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-sm);
    color: #000;
}

.cta-description {
    font-size: 1.1rem;
    opacity: 0.8;
    margin-bottom: var(--space-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: #000;
}

.cta-phone svg {
    width: 40px;
    height: 40px;
}

.cta-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

.cta-buttons .btn {
    background: #000;
    color: #fff;
}

.cta-buttons .btn:hover {
    background: var(--bg-elevated);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.footer-brand .site-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.footer-social {
    display: flex;
    gap: var(--space-xs);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.footer-social a:hover {
    background: var(--accent);
    color: #000;
}

.footer-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-contact svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    stroke: var(--accent);
    margin-top: 2px;
}

.footer-bottom {
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-bottom a {
    color: var(--text-secondary);
}

.footer-bottom a:hover {
    color: var(--accent);
}

@media (max-width: 991px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */
.text-accent { color: var(--accent); }
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mt-lg { margin-top: var(--space-lg); }
.py-xl { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }