/* ============================================
   YASHENG FRP - Industrial Theme v2
   With real product & factory images
   ============================================ */

/* --- Variables --- */
:root {
    --primary: #0f2a4a;
    --primary-light: #1a4066;
    --accent: #e67e22;
    --accent-hover: #cf6e17;
    --bg-light: #f4f6f9;
    --bg-white: #ffffff;
    --text-dark: #1a1a2e;
    --text-body: #4a5568;
    --text-light: #718096;
    --border: #e2e8f0;
    --success: #27ae60;
    --shadow: 0 4px 24px rgba(15, 42, 74, 0.08);
    --shadow-lg: 0 12px 40px rgba(15, 42, 74, 0.12);
    --radius: 12px;
    --transition: all 0.3s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-body);
    background: var(--bg-white);
    line-height: 1.7;
    overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 {
    font-family: 'Rajdhani', sans-serif;
    color: var(--text-dark);
    line-height: 1.3;
    font-weight: 700;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.container { max-width: 1920px; margin: 0 auto; padding: 0 24px; }

/* --- Buttons --- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 28px; border-radius: var(--radius);
    font-family: 'Rajdhani', sans-serif; font-size: 15px; font-weight: 700;
    letter-spacing: 0.5px; text-transform: uppercase; cursor: pointer;
    border: 2px solid transparent; transition: var(--transition); white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,126,34,0.35); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary); border-color: #fff; }
.btn-white:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-sm { padding: 9px 20px; font-size: 13px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-nav { background: var(--accent); color: #fff; border-radius: 8px; padding: 8px 18px; font-size: 14px; }
.btn-nav:hover { background: var(--accent-hover); }

/* --- NAVBAR --- */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background: rgba(255,255,255,0.97); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border); transition: var(--transition);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; padding-top: 0; padding-bottom: 0; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { width: 42px; height: 42px; display: flex; align-items: center; justify-content: center; overflow: hidden; border-radius: 6px; flex-shrink: 0; background: var(--primary); padding: 4px; }
.footer-brand .logo-icon { background: rgba(255,255,255,0.1); }
.logo-img { width: 100%; height: 100%; object-fit: contain; }
.logo-text { font-family: 'Rajdhani', sans-serif; font-size: 18px; font-weight: 700; color: var(--text-dark); letter-spacing: 1px; }
.logo-text em { color: var(--accent); font-style: normal; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a { padding: 8px 14px; font-family: 'Rajdhani', sans-serif; font-size: 15px; font-weight: 600; color: var(--text-body); border-radius: 8px; letter-spacing: 0.3px; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); background: rgba(15,42,74,0.06); }

/* Dropdown Menu */
.dropdown { position: relative; }
.dropdown > a { display: inline-flex; align-items: center; gap: 4px; }
.dropdown-menu { 
    position: absolute; top: 100%; left: 0; 
    min-width: 220px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: 0 12px 36px rgba(0,0,0,0.12);
    border: 1px solid var(--border);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: var(--transition);
    z-index: 1001;
}
.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}
.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--text-body);
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    border-radius: 0;
}
.dropdown-menu li a:hover {
    background: var(--bg-light);
    color: var(--primary);
}
.hamburger { display: none; background: none; border: none; font-size: 22px; color: var(--text-dark); cursor: pointer; padding: 6px; }

/* --- HERO --- */
.hero {
    position: relative; min-height: 100vh; display: flex; align-items: center;
    background: linear-gradient(135deg, #0a1a2e 0%, #0f2a4a 45%, #1a4066 100%);
    overflow: hidden; padding-top: 68px;
}
.hero-overlay {
    position: absolute; inset: 0;
    background: url('/assets/images/hero-bg.jpg') center/cover no-repeat;
    opacity: 0.18;
}
.hero::after {
    content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 120px;
    background: linear-gradient(to top, var(--bg-light), transparent);
}
.hero-content { position: relative; z-index: 2; padding: 60px 0; max-width: 760px; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 10px;
    background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
    border-radius: 100px; padding: 7px 18px;
    font-family: 'Rajdhani', sans-serif; font-size: 13px; font-weight: 600;
    color: rgba(255,255,255,0.85); letter-spacing: 0.5px; text-transform: uppercase;
    margin-bottom: 28px;
}
.badge-dot { width: 8px; height: 8px; background: #27ae60; border-radius: 50%; box-shadow: 0 0 8px rgba(39,174,96,0.8); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
.hero h1 { font-size: clamp(42px, 6vw, 72px); color: #fff; margin-bottom: 24px; line-height: 1.1; }
.hero h1 .highlight { color: var(--accent); }
.hero-sub { font-size: 18px; color: rgba(255,255,255,0.7); line-height: 1.8; margin-bottom: 36px; max-width: 600px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats {
    display: flex; align-items: center; gap: 0;
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius); padding: 20px 32px; width: fit-content;
}
.stat { text-align: center; padding: 0 24px; }
.stat-num { display: inline; font-family: 'Rajdhani', sans-serif; font-size: 36px; font-weight: 800; color: var(--accent); line-height: 1; }
.stat-suffix { font-family: 'Rajdhani', sans-serif; font-size: 36px; font-weight: 800; color: var(--accent); }
.stat-label { display: block; font-size: 12px; font-weight: 600; color: rgba(255,255,255,0.5); text-transform: uppercase; letter-spacing: 0.5px; margin-top: 4px; }
.stat-div { width: 1px; height: 40px; background: rgba(255,255,255,0.15); }
.hero-scroll { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); z-index: 3; color: rgba(255,255,255,0.4); font-size: 20px; animation: bounce 2.5s infinite; }
@keyframes bounce { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(8px)} }

/* --- Sections --- */
.section { padding: 72px 0; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 64px; }
.section-tag { display: inline-block; font-family: 'Rajdhani', sans-serif; font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; color: var(--accent); margin-bottom: 12px; }
.section-header h2 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 16px; }
.section-header p { color: var(--text-light); font-size: 17px; }

/* --- PRODUCTS --- */
.products { background: var(--bg-light); }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.product-card {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }

.product-top {
    position: relative; height: 260px;
    background-size: cover; background-position: center;
    background-color: var(--primary-light); overflow: hidden;
}
.product-photo {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
.product-label {
    position: absolute; top: 16px; left: 16px;
    background: var(--accent); color: #fff;
    font-family: 'Rajdhani', sans-serif; font-size: 12px; font-weight: 700;
    padding: 4px 14px; border-radius: 100px; text-transform: uppercase; letter-spacing: 0.5px;
    z-index: 2;
}
.product-overlay {
    position: absolute; inset: 0;
    background: rgba(15,42,74,0.8);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: var(--transition);
}
.product-card:hover .product-overlay { opacity: 1; }
.product-info { padding: 24px; }
.product-info h3 { font-size: 22px; margin-bottom: 12px; color: var(--primary); }
.product-info > p { font-size: 14px; color: var(--text-light); margin-bottom: 16px; line-height: 1.7; }
.product-specs { margin-bottom: 16px; }
.product-specs li { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--text-body); padding: 3px 0; }
.product-specs li i { color: var(--success); font-size: 11px; margin-top: 5px; flex-shrink: 0; }
.product-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { display: inline-block; font-size: 11px; font-weight: 600; padding: 3px 10px; background: rgba(15,42,74,0.06); color: var(--primary); border-radius: 100px; text-transform: uppercase; letter-spacing: 0.3px; }
.products-cta {
    margin-top: 48px; text-align: center; padding: 32px;
    background: var(--primary); border-radius: var(--radius);
    display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.products-cta p { color: rgba(255,255,255,0.8); font-size: 15px; display: flex; align-items: center; gap: 8px; }
.products-cta p i { color: var(--accent); }

/* --- ABOUT --- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.about-text .section-tag { text-align: left; }
.about-text h2 { font-size: 34px; margin-bottom: 20px; }
.about-text > p { color: var(--text-body); margin-bottom: 16px; font-size: 16px; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px; }
.af-item { display: flex; align-items: center; gap: 14px; padding: 16px; background: var(--bg-light); border-radius: 10px; transition: var(--transition); }
.af-item:hover { background: rgba(15,42,74,0.06); }
.af-item i { font-size: 22px; color: var(--accent); width: 40px; text-align: center; }
.af-item strong { display: block; font-family: 'Rajdhani', sans-serif; font-size: 18px; color: var(--text-dark); }
.af-item span { font-size: 12px; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.3px; }

/* About Gallery */
.about-gallery { position: relative; }
.gallery-main { border-radius: var(--radius); overflow: hidden; margin-bottom: 16px; box-shadow: var(--shadow); }
.gallery-main img { width: 100%; height: 280px; object-fit: cover; }
.gallery-side { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.gallery-side img { width: 100%; height: 140px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
.gallery-badge {
    position: absolute; top: 20px; right: 20px;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(8px);
    border-radius: 100px; padding: 6px 16px;
    display: flex; align-items: center; gap: 8px;
    font-size: 12px; font-weight: 600; color: var(--primary);
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.gallery-badge i { color: var(--accent); }

/* --- WHY US --- */
.why-us { background: var(--bg-light); }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.why-card {
    background: #fff; border-radius: var(--radius); padding: 32px 28px;
    border: 1px solid var(--border); transition: var(--transition); text-align: center;
}
.why-card:hover { border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-4px); }
.why-icon {
    width: 64px; height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 16px; display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 24px; color: var(--accent);
}
.why-card h3 { font-size: 19px; margin-bottom: 10px; }
.why-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* --- PROCESS --- */
.process { background: var(--primary); }
.process .section-header h2 { color: #fff; }
.process .section-header p { color: rgba(255,255,255,0.6); }
.process .section-tag { color: var(--accent); }
.process-steps { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }
.step {
    background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius); padding: 28px 20px; text-align: center;
    flex: 1; min-width: 160px; max-width: 200px; position: relative; transition: var(--transition);
}
.step:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.25); }
.step-num { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #fff; font-family: 'Rajdhani', sans-serif; font-size: 12px; font-weight: 800; padding: 2px 12px; border-radius: 100px; }
.step-icon { font-size: 32px; color: var(--accent); margin: 12px 0 12px; }
.step h4 { color: #fff; font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 13px; color: rgba(255,255,255,0.55); line-height: 1.6; }
.step-arrow { color: rgba(255,255,255,0.2); font-size: 20px; flex-shrink: 0; }

.av-card img { width: 100%; height: 120px; object-fit: cover; border-radius: var(--radius); margin-bottom: 12px; }
.av-card i { font-size: 28px; color: var(--accent); margin-bottom: 12px; display: block; }
.av-card h4 { font-size: 17px; margin-bottom: 8px; }
.av-card p { font-size: 13px; color: var(--text-light); line-height: 1.6; }
.about-visuals { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.av-card { padding: 20px; background: var(--bg-light); border-radius: var(--radius); border: 1px solid var(--border); transition: var(--transition); }
.av-card:hover { border-color: var(--accent); transform: translateY(-3px); }

/* CTA Banner */
.cta-banner {
    position: relative; padding: 80px 0;
    background: linear-gradient(135deg, #0a1a2e 0%, #0f2a4a 100%);
}
.cta-overlay { position: absolute; inset: 0; background: rgba(15,42,74,0.85); }
.cta-content { position: relative; z-index: 2; text-align: center; }
.cta-content h2 { font-size: clamp(28px, 4vw, 40px); color: #fff; margin-bottom: 16px; }
.cta-content p { color: rgba(255,255,255,0.7); font-size: 18px; margin-bottom: 32px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* --- CONTACT --- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: start; }
.contact-info h3 { font-size: 24px; margin-bottom: 28px; }
.ci-item { display: flex; align-items: flex-start; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.ci-item:last-of-type { border-bottom: none; }
.ci-icon { width: 42px; height: 42px; background: var(--bg-light); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 16px; color: var(--accent); flex-shrink: 0; }
.ci-item strong { display: block; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-light); margin-bottom: 2px; }
.ci-item p { font-size: 14px; color: var(--text-body); }
.ci-item a { color: var(--primary); font-weight: 600; }
.ci-item a:hover { color: var(--accent); }
.contact-social { margin-top: 28px; }
.contact-social h4 { font-size: 15px; margin-bottom: 14px; color: var(--text-dark); }
.social-links { display: flex; gap: 12px; flex-wrap: wrap; }
.social-btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: 10px; font-size: 14px; font-weight: 600; transition: var(--transition); }
.social-btn.whatsapp { background: #25D366; color: #fff; }
.social-btn.whatsapp:hover { background: #1fb855; transform: translateY(-2px); }
.social-btn.email { background: var(--primary); color: #fff; }
.social-btn.email:hover { background: var(--primary-light); transform: translateY(-2px); }
.response-time { margin-top: 20px; }
.rt-bar { display: flex; align-items: center; gap: 10px; background: #e8f5e9; border: 1px solid #c8e6c9; border-radius: 10px; padding: 12px 16px; font-size: 13px; color: #2e7d32; }
.rt-dot { width: 8px; height: 8px; border-radius: 50%; }
.rt-dot.online { background: #27ae60; box-shadow: 0 0 6px rgba(39,174,96,0.6); animation: pulse 2s infinite; }

/* --- Form --- */
.contact-form-wrap { background: #fff; border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.3px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 12px 14px; border: 1.5px solid var(--border); border-radius: 10px;
    font-family: 'Inter', sans-serif; font-size: 14px; color: var(--text-dark);
    background: var(--bg-light); transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 3px rgba(230,126,34,0.1); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23718096' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.form-footer { margin-top: 20px; }
.form-note { font-size: 12px; color: var(--text-light); margin-bottom: 16px; display: flex; align-items: center; gap: 6px; }
.form-note i { color: var(--success); }
.btn-submit { width: 100%; justify-content: center; padding: 15px; font-size: 16px; }
.form-success { text-align: center; padding: 32px; }
.form-success i { font-size: 48px; color: var(--success); margin-bottom: 16px; }
.form-success h4 { font-size: 22px; margin-bottom: 8px; }
.form-success p { color: var(--text-light); }

/* --- FOOTER --- */
.footer { background: #0a1a2e; color: rgba(255,255,255,0.6); padding: 64px 0 0; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.7; }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: 15px; margin-bottom: 18px; font-family: 'Rajdhani', sans-serif; }
.footer-links ul li { margin-bottom: 8px; }
.footer-links ul li a { font-size: 14px; opacity: 0.6; }
.footer-links ul li a:hover { opacity: 1; color: var(--accent); }
.footer-contact p { font-size: 14px; display: flex; align-items: center; gap: 10px; margin-bottom: 10px; opacity: 0.8; }
.footer-contact a { color: #fff; }
.footer-contact a:hover { color: var(--accent); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 24px 0; font-size: 13px; }
.footer-badges { display: flex; gap: 20px; }
.footer-badges span { display: flex; align-items: center; gap: 6px; opacity: 0.5; font-size: 12px; }
.footer-badges i { color: var(--accent); }

/* --- WhatsApp Float --- */
.whatsapp-float {
    position: fixed; bottom: 28px; right: 28px; z-index: 999;
    width: 58px; height: 58px; background: #25D366; color: #fff;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 28px; box-shadow: 0 4px 20px rgba(37,211,102,0.45);
    transition: var(--transition); animation: floatPulse 3s infinite;
}
.whatsapp-float:hover { background: #1fb855; transform: scale(1.1); box-shadow: 0 6px 28px rgba(37,211,102,0.55); }
@keyframes floatPulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.05)} }

/* --- Responsive --- */
@media (max-width: 1024px) {
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .why-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .hamburger { display: block; }
    .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px; border-bottom: 1px solid var(--border); box-shadow: 0 8px 24px rgba(0,0,0,0.08); gap: 4px; }
    .nav-links.active { display: flex; }
    .nav-links a { padding: 12px 16px; }
    .nav-links .btn-nav { margin-top: 8px; text-align: center; }
    .hero { text-align: center; }
    .hero-content { max-width: 100%; padding: 40px 0; }
    .hero-btns { justify-content: center; }
    .hero-stats { flex-direction: column; gap: 16px; padding: 20px; width: 100%; }
    .stat-div { width: 40px; height: 1px; }
    .section { padding: 64px 0; }
    .product-grid { grid-template-columns: 1fr; }
    .filter-tabs { gap: 8px; padding: 6px; }
    .filter-tab { padding: 10px 18px; font-size: 12px; }
    .about-features { grid-template-columns: 1fr; }
    .about-visuals { grid-template-columns: 1fr; }
    .why-grid { grid-template-columns: 1fr; }
    .process-steps { flex-direction: column; }
    .step-arrow { transform: rotate(90deg); }
    .contact-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .products-cta { flex-direction: column; text-align: center; }
    .footer-top { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .cta-banner { background-attachment: scroll; }
    .gallery-side { grid-template-columns: 1fr; }
}

/* ============================================
   SUB-PAGE STYLES (Products, About, Factory, Contact)
   ============================================ */

/* Page Header */
.page-header {
    padding: 100px 0; background: linear-gradient(135deg, #0a1a2e 0%, #0f2a4a 50%, #1a4066 100%);
    color: #fff;
    text-align: center;
}
.page-header .section-tag { display: inline-block; font-family: 'Rajdhani', sans-serif; font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; color: var(--accent); margin-bottom: 12px; }
.page-header h1 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 16px; color: #fff; }
.page-header p { font-size: 18px; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto; }
.breadcrumb { margin-top: 24px; font-size: 14px; color: rgba(255,255,255,0.5); }
.breadcrumb a { color: rgba(255,255,255,0.7); text-decoration: underline; }
.breadcrumb a:hover { color: var(--accent); }

/* Detail Page Layout */
.detail-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; margin-bottom: 64px; }
.detail-gallery { position: sticky; top: 80px; }
.detail-main-img { width: 100%; height: 400px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 12px; }
.detail-thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.detail-thumbs img { width: 100%; height: 100px; object-fit: cover; border-radius: 8px; cursor: pointer; opacity: 0.7; transition: var(--transition); border: 2px solid transparent; }
.detail-thumbs img:hover { opacity: 1; border-color: var(--accent); }
.detail-info h2 { font-size: 28px; margin-bottom: 16px; color: var(--text-dark); }
.detail-desc { font-size: 15px; color: var(--text-body); line-height: 1.7; margin-bottom: 20px; }

/* Spec Table */
.spec-table { background: #fff; border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); border: 1px solid var(--border); margin: 24px 0; }
.spec-table h3 { font-size: 17px; margin-bottom: 16px; color: var(--primary); }
.spec-table h3 i { color: var(--accent); margin-right: 8px; }
.spec-table table { width: 100%; border-collapse: collapse; }
.spec-table tr:nth-child(even) { background: var(--bg-light); }
.spec-table th { text-align: left; padding: 10px 14px; font-size: 13px; font-weight: 600; color: var(--text-light); width: 35%; vertical-align: top; border-bottom: 1px solid var(--border); }
.spec-table td { padding: 10px 14px; font-size: 14px; color: var(--text-dark); border-bottom: 1px solid var(--border); }

/* Detail Actions */
.detail-actions { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.mt-16 { margin-top: 16px !important; }

/* Detail Section */
.detail-section { margin-top: 48px; }
.detail-section h2 { font-size: 26px; margin-bottom: 32px; color: var(--text-dark); }
.detail-section h2 i { color: var(--accent); margin-right: 10px; }

/* App Grid */
.app-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }
.app-item { padding: 24px; background: var(--bg-light); border-radius: var(--radius); border: 1px solid var(--border); transition: var(--transition); }
.app-item:hover { border-color: var(--accent); transform: translateY(-3px); }
.app-item i { font-size: 28px; color: var(--accent); margin-bottom: 12px; }
.app-item h4 { font-size: 16px; margin-bottom: 6px; }
.app-item p { font-size: 13px; color: var(--text-light); line-height: 1.5; }

/* FAQ */
.faq-list { max-width: 800px; }
.faq-item { padding: 20px 0; border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-item h4 { font-size: 16px; cursor: pointer; color: var(--primary); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.faq-item h4::before { content: '+'; display: inline-flex; justify-content: center; width: 22px; height: 22px; background: var(--accent); color: #fff; border-radius: 50%; font-size: 14px; font-weight: bold; flex-shrink: 0; }
.faq-item p { font-size: 14px; color: var(--text-body); line-height: 1.6; padding-left: 30px; display: none; }
.faq-item h4.active + p, .faq-item h4:focus + p { display: block; }
.faq-item h4.active::before { content: '-'; }

/* Custom CTA */
.custom-cta { text-align: center; padding: 40px; background: linear-gradient(135deg, #f4f6f9, #e8ecf1); border-radius: var(--radius); margin-top: 48px; }
.custom-cta h2 { font-size: 26px; margin-bottom: 12px; }
.custom-cta p { font-size: 16px; color: var(--text-light); margin-bottom: 24px; }

/* --- FILTER TABS --- */
.filter-tabs {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 48px;
    padding: 8px;
    background: var(--bg-light);
    border-radius: var(--radius);
}
.filter-tab {
    padding: 12px 28px;
    border: 2px solid transparent;
    border-radius: 100px;
    background: #fff;
    font-family: 'Rajdhani', sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-body);
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(15,42,74,0.06);
}
.filter-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(15,42,74,0.1);
}
.filter-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(15,42,74,0.2);
}

/* Fade-in animation for filtered cards */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* About Page */
.about-intro { margin-bottom: 48px; }
.about-text-block { margin-bottom: 36px; }
.about-text-block h2 { font-size: 28px; margin-bottom: 16px; }
.about-text-block p { font-size: 15px; color: var(--text-body); line-height: 1.7; margin-bottom: 12px; }
.about-stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 32px; }
.stat-card { background: var(--bg-light); border-radius: var(--radius); padding: 24px 16px; text-align: center; border: 1px solid var(--border); }
.stat-card .stat-big { display: block; font-family: 'Rajdhani', sans-serif; font-size: 36px; font-weight: 800; color: var(--accent); line-height: 1; }
.stat-card span { display: block; font-size: 12px; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.5px; margin-top: 4px; }
.about-grid-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 36px; }
.mission-box { padding: 28px; background: var(--bg-light); border-radius: var(--radius); border: 1px solid var(--border); }
.mission-box h3 { font-size: 18px; margin-bottom: 10px; color: var(--primary); }
.mission-box h3 i { color: var(--accent); margin-right: 8px; }
.mission-box p { font-size: 14px; color: var(--text-body); line-height: 1.6; }

/* Team Grid */
.team-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; margin-top: 24px; }
.team-item { padding: 24px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); transition: var(--transition); }
.team-item:hover { border-color: var(--accent); transform: translateY(-3px); }
.team-item i { font-size: 28px; color: var(--accent); margin-bottom: 10px; }
.team-item h4 { font-size: 16px; margin-bottom: 6px; }
.team-item p { font-size: 13px; color: var(--text-light); line-height: 1.5; }

/* Factory Stats */
.factory-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 48px; }
.fs-item { display: flex; align-items: center; gap: 14px; padding: 20px; background: var(--bg-light); border-radius: var(--radius); border: 1px solid var(--border); }
.fs-item i { font-size: 24px; color: var(--accent); flex-shrink: 0; }
.fs-item strong { display: block; font-family: 'Rajdhani', sans-serif; font-size: 22px; color: var(--text-dark); }
.fs-item span { font-size: 11px; color: var(--text-light); text-transform: uppercase; }

/* Production Line Grid */
.section-title-center { text-align: center; font-size: 26px; margin-bottom: 40px; color: var(--text-dark); }
.prod-line-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pl-card { background: #fff; border-radius: var(--radius); padding: 24px; border: 1px solid var(--border); transition: var(--transition); }
.pl-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.pl-icon { width: 48px; height: 48px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--accent); margin-bottom: 14px; }
.pl-card h3 { font-size: 17px; margin-bottom: 8px; }
.pl-card p { font-size: 13px; color: var(--text-body); line-height: 1.5; margin-bottom: 10px; }
.pl-card ul { list-style: none; padding: 0; }
.pl-card ul li { font-size: 13px; color: var(--text-body); padding: 3px 0 3px 18px; position: relative; }
.pl-card ul li::before { content: '\2713'; position: absolute; left: 0; color: var(--success); font-size: 11px; }

/* ============================================
   CONTACT PAGE STYLES
   ============================================ */

.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; margin-top: 32px; }
.contact-info { padding: 28px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); }
.contact-info h3 { font-size: 22px; margin-bottom: 24px; }
.ci-item { display: flex; gap: 16px; margin-bottom: 20px; }
.ci-icon { width: 44px; height: 44px; background: var(--bg-light); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--accent); flex-shrink: 0; }
.ci-item strong { display: block; font-size: 13px; color: var(--text-dark); margin-bottom: 2px; }
.ci-item p { font-size: 14px; color: var(--text-body); line-height: 1.5; }

.contact-social { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--border); }
.contact-social h4 { font-size: 15px; margin-bottom: 14px; }
.social-links { display: flex; gap: 10px; flex-wrap: wrap; }
.social-btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 8px; font-size: 14px; font-weight: 500; text-decoration: none; transition: var(--transition); }
.social-btn.whatsapp { background: #25D366; color: #fff; }
.social-btn.whatsapp:hover { background: #20bd5a; }
.social-btn.email { background: var(--primary); color: #fff; }
.social-btn.email:hover { background: var(--primary-light); }

.response-time { margin-top: 20px; padding: 14px; background: #f0fdf4; border-radius: 8px; border: 1px solid #bbf7d0; }
.rt-bar { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #166534; }
.rt-dot { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; }
.rt-dot.online { animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

/* Contact Form */
.contact-form-wrap { padding: 28px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); }
.contact-form { }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; font-family: 'Inter', sans-serif; transition: var(--transition); background: #fafafa; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); background: #fff; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; }
.form-note { font-size: 12px; color: var(--text-light); }
.form-note i { margin-right: 4px; }
.btn-submit { min-width: 160px; }
.form-success { text-align: center; padding: 32px; background: #f0fdf4; border-radius: var(--radius); margin-top: 16px; }
.form-success i { font-size: 48px; color: var(--success); margin-bottom: 12px; }
.form-success h4 { font-size: 20px; color: #166534; margin-bottom: 8px; }
.form-success p { font-size: 14px; color: #15803d; }

/* Responsive for Sub-pages */
@media (max-width: 900px) {
  .detail-layout, .contact-grid { grid-template-columns: 1fr; }
  .detail-gallery { position: static; }
  .detail-main-img { height: 300px; }
  .about-stats-row, .about-grid-2col, .factory-stats, .prod-line-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .about-stats-row, .about-grid-2col, .factory-stats, .prod-line-grid { grid-template-columns: 1fr; }
  .detail-actions { flex-direction: column; }
  .detail-actions .btn { width: 100%; }
  .product-grid { grid-template-columns: 1fr; }
}