/*
Theme Name: Điện & PCCC An Toàn
Description: Theme hoàn chỉnh dựa trên bản thiết kế UI
Version: 2.0
*/

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

:root {
    --primary: #1555d4;
    --dark-blue: #0b1a3a;
    --red: #d9281c;
    --text-color: #333;
    --bg-light: #f8f9fa;
    --border: #eaedf1;
    --container: 1200px;
    --smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; color: var(--text-color); background: #fff; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; transition: var(--smooth); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 15px; }

/* Buttons & Titles */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 24px; border-radius: 4px; font-weight: 600; cursor: pointer; transition: var(--smooth); font-size: 14px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #0f40a3; transform: translateY(-2px); }
.btn-outline { background: transparent; color: #fff; border: 1px solid #fff; }
.btn-outline:hover { background: #fff; color: var(--dark-blue); }
.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { background: #b51f15; }
.section-title { text-align: center; font-size: 28px; color: var(--dark-blue); margin-bottom: 40px; font-weight: 700; text-transform: uppercase; }
.section-title::after { content: ''; display: block; width: 50px; height: 3px; background: var(--primary); margin: 15px auto 0; }

/* Header */
.site-header { background: var(--dark-blue); color: #fff; padding: 15px 0; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
.header-inner { display: flex; justify-content: space-between; align-items: center; }
.main-nav ul { display: flex; gap: 25px; }
.main-nav a { font-weight: 600; text-transform: uppercase; font-size: 14px; padding-bottom: 5px; border-bottom: 2px solid transparent; }
.main-nav a:hover { border-color: #fff; }
.hotline-box { display: flex; align-items: center; gap: 10px; background: rgba(255,255,255,0.1); padding: 8px 15px; border-radius: 50px; }
.hotline-box i { background: var(--primary); width: 35px; height: 35px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }

/* Hero Banner */
.hero { background: url('https://placehold.co/1920x700/0b1a3a/fff') center/cover; padding: 120px 0; color: #fff; position: relative; }
.hero::before { content:''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11,26,58,0.9) 0%, rgba(11,26,58,0.4) 100%); }
.hero-content { position: relative; z-index: 1; max-width: 650px; }
.hero-content h2 { font-size: 46px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
.hero-content ul li { margin-bottom: 12px; display: flex; align-items: center; gap: 10px; font-size: 16px; }

/* Cards (Vue-like smooth hover) */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { background: #fff; border-radius: 8px; overflow: hidden; border: 1px solid var(--border); transition: var(--smooth); }
.card:hover { transform: translateY(-6px); box-shadow: 0 12px 30px rgba(0,0,0,0.08); border-color: transparent; }
.card-img { height: 220px; object-fit: cover; width: 100%; }
.card-body { padding: 20px; }
.card-title { font-size: 16px; color: var(--dark-blue); margin-bottom: 10px; font-weight: 700; }

/* Product Card Specifics (Image 2) */
.product-card { text-align: center; padding: 20px; }
.product-card img { height: 180px; object-fit: contain; margin: 0 auto 15px; transition: var(--smooth); }
.product-card:hover img { transform: scale(1.05); }
.product-desc { font-size: 13px; color: #666; margin-bottom: 15px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-actions { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.btn-contact-sm { flex: 1; border: 1px solid var(--primary); color: var(--primary); padding: 8px; border-radius: 4px; font-weight: 600; font-size: 13px; }
.btn-contact-sm:hover { background: var(--primary); color: #fff; }
.btn-cart { width: 36px; height: 36px; border: 1px solid var(--border); border-radius: 4px; display: flex; align-items: center; justify-content: center; color: var(--primary); }

/* Project Card Specifics (Image 3) */
.project-card { position: relative; }
.project-badge { position: absolute; top: 180px; left: 15px; background: var(--primary); color: #fff; font-size: 11px; padding: 4px 10px; border-radius: 4px; text-transform: uppercase; font-weight: 600; }
.project-meta { font-size: 13px; color: #666; display: flex; align-items: center; gap: 5px; margin-bottom: 15px; }

/* Sidebar Layout (Image 2) */
.page-layout { display: grid; grid-template-columns: 280px 1fr; gap: 30px; padding: 50px 0; }
.sidebar-menu { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-bottom: 25px; }
.sidebar-title { background: var(--primary); color: #fff; padding: 15px 20px; font-size: 16px; display: flex; justify-content: space-between; }
.sidebar-menu li a { display: flex; align-items: center; gap: 10px; padding: 12px 20px; border-bottom: 1px solid var(--border); font-size: 14px; font-weight: 500; }
.sidebar-menu li a:hover { background: var(--bg-light); color: var(--primary); padding-left: 25px; }
.sidebar-banner { background: var(--primary); color: #fff; padding: 30px 20px; border-radius: 8px; text-align: center; }

/* Filter Bar (Image 3) */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: -20px 0 40px; }
.filter-btn { padding: 10px 20px; background: #fff; border: 1px solid var(--border); border-radius: 30px; font-size: 13px; font-weight: 600; cursor: pointer; color: #555; }
.filter-btn.active, .filter-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Stats & CTA (Image 3) */
.stats-wrap { background: var(--dark-blue); padding: 50px 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr) 1.5fr; gap: 20px; align-items: center; }
.stat-item { display: flex; align-items: center; gap: 15px; color: #fff; }
.stat-item h3 { font-size: 32px; color: var(--primary); line-height: 1; }
.stat-item p { font-size: 13px; color: #aaa; text-transform: uppercase; }
.cta-box { background: rgba(255,255,255,0.05); padding: 25px; border-radius: 8px; text-align: right; }
.cta-box h4 { color: #fff; font-size: 18px; margin-bottom: 5px; }

/* Floating Action Buttons */
.fab-container { position: fixed; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 15px; z-index: 999; }
.fab { width: 50px; height: 50px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 24px; box-shadow: 0 4px 15px rgba(0,0,0,0.2); transition: var(--smooth); cursor: pointer; }
.fab:hover { transform: scale(1.1); }
.fab-phone { background: var(--red); animation: pulse 2s infinite; }
.fab-zalo { background: #0068ff; }
.fab-mess { background: #0084ff; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(217,40,28,0.7); } 70% { box-shadow: 0 0 0 15px rgba(217,40,28,0); } 100% { box-shadow: 0 0 0 0 rgba(217,40,28,0); } }

/* Footer */
.footer { background: var(--dark-blue); color: #a0aabf; padding: 60px 0 20px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1.5fr 1.5fr; gap: 40px; margin-bottom: 40px; }
.footer-title { color: #fff; font-size: 16px; margin-bottom: 20px; text-transform: uppercase; font-weight: 700; }
.footer ul li { margin-bottom: 12px; display: flex; gap: 10px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; display: flex; justify-content: space-between; }