/* ========================================================
   HOBI VIỆT NAM - CSS GIAO DIỆN DỰ ÁN (hobivietnam.vn/du-an/)
   Phong cách hiện đại, tinh tế, tối ưu trải nghiệm người dùng
   ======================================================== */

:root {
    --primary-blue: #0056b3;
    --primary-dark: #003d80;
    --primary-light: #e8f2fc;
    --accent-gold: #c29143;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --bg-light: #f8fafc;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --hover-shadow: 0 12px 30px rgba(0, 86, 179, 0.15);
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Topbar */
.topbar {
    background-color: #0b1f3a;
    color: #94a3b8;
    font-size: 13px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.topbar-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.topbar-left span {
    margin-right: 18px;
}

.topbar-left i {
    color: var(--accent-gold);
    margin-right: 5px;
}

.topbar-left strong {
    color: #ffffff;
}

.topbar-right a {
    color: #cbd5e1;
    text-decoration: none;
    margin-left: 15px;
    transition: var(--transition);
}

.topbar-right a:hover {
    color: #ffffff;
}

/* Main Header */
.main-header {
    background: #ffffff;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
}

.logo {
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--primary-blue);
    line-height: 1;
}

.brand-sub {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    color: #334155;
    margin-left: 6px;
}

.brand-tag {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 3px;
}

/* Navigation Menu */
.nav-menu ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-menu ul li a {
    text-decoration: none;
    color: #334155;
    font-weight: 600;
    font-size: 13.5px;
    padding: 10px 14px;
    border-radius: 6px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.nav-menu ul li a:hover,
.nav-menu ul li a.active {
    color: var(--primary-blue);
    background-color: var(--primary-light);
}

.btn-quote {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    color: #ffffff;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 86, 179, 0.25);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-quote:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 86, 179, 0.35);
}

/* Page Banner */
.page-banner {
    position: relative;
    background: url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
    color: #ffffff;
    padding: 80px 0 60px;
    text-align: center;
}

.banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11, 31, 58, 0.92), rgba(0, 86, 179, 0.82));
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.badge-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    padding: 5px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.page-banner h1 {
    font-size: 38px;
    font-weight: 800;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.breadcrumb {
    font-size: 14px;
    color: #cbd5e1;
    margin-bottom: 16px;
}

.breadcrumb a {
    color: #ffffff;
    text-decoration: none;
}

.breadcrumb i {
    margin: 0 8px;
    font-size: 11px;
}

.banner-desc {
    font-size: 15px;
    color: #e2e8f0;
    line-height: 1.7;
    margin-bottom: 35px;
}

.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    padding: 20px 10px;
    gap: 10px;
}

.stat-item strong {
    display: block;
    font-size: 28px;
    color: #ffffff;
    font-weight: 800;
}

.stat-item span {
    font-size: 13px;
    color: #cbd5e1;
}

/* Main Content & Filters */
.main-content {
    padding: 50px 20px 80px;
}

.filter-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    background: #ffffff;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    margin-bottom: 35px;
    border: 1px solid var(--border-color);
}

.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filter-btn {
    border: 1px solid var(--border-color);
    background: #ffffff;
    color: var(--text-dark);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.filter-btn.active {
    background: var(--primary-blue);
    color: #ffffff;
    border-color: var(--primary-blue);
}

.search-box {
    position: relative;
    min-width: 280px;
}

.search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
}

.search-box input {
    width: 100%;
    padding: 9px 14px 9px 38px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 13.5px;
    outline: none;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.12);
}

/* Project Grid */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 30px;
}

.project-card {
    background: #ffffff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--hover-shadow);
    border-color: #bfdbfe;
}

.card-thumb {
    position: relative;
    height: 240px;
    overflow: hidden;
}

.card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.2, 0, 0.2, 1);
}

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

.card-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--primary-blue);
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 4px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.card-year {
    position: absolute;
    top: 14px;
    right: 14px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    color: #ffffff;
    font-size: 11px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
}

.card-body {
    padding: 22px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-title {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
    min-height: 48px;
}

.card-title a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition);
}

.card-title a:hover {
    color: var(--primary-dark);
}

.card-meta, .card-material, .card-area {
    font-size: 13.5px;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-meta i, .card-material i, .card-area i {
    color: var(--primary-blue);
    width: 16px;
}

.card-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid #f1f5f9;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.client-name {
    font-size: 12.5px;
    font-weight: 600;
    color: #475569;
}

.btn-detail {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.btn-detail:hover {
    color: var(--primary-dark);
    gap: 10px;
}

/* Pagination */
.pagination-wrapper {
    margin-top: 50px;
    display: flex;
    justify-content: center;
}

.pagination {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
}

.pagination li a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    padding: 0 14px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.pagination li a:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.pagination li a.active {
    background: var(--primary-blue);
    color: #ffffff;
    border-color: var(--primary-blue);
}

.pagination li a.disabled {
    pointer-events: none;
    opacity: 0.5;
}

/* Consultation Section */
.consult-section {
    margin-top: 70px;
}

.consult-box {
    background: linear-gradient(135deg, #0b1f3a, #003d80);
    border-radius: var(--radius-lg);
    padding: 45px;
    color: #ffffff;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
    box-shadow: 0 15px 35px rgba(11, 31, 58, 0.2);
}

.consult-text h2 {
    font-size: 26px;
    font-weight: 800;
    line-height: 1.35;
    margin-bottom: 15px;
}

.consult-text p {
    color: #cbd5e1;
    font-size: 14.5px;
    margin-bottom: 25px;
    line-height: 1.7;
}

.hotline-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hotline-btn {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #ffffff;
    text-decoration: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.hotline-btn:hover {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
}

.consult-form {
    background: #ffffff;
    padding: 30px;
    border-radius: var(--radius-md);
    color: var(--text-dark);
}

.consult-form h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 18px;
    text-align: center;
}

.form-group {
    margin-bottom: 14px;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 13.5px;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--primary-blue);
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: var(--primary-blue);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.submit-btn:hover {
    background: var(--primary-dark);
}

/* Footer */
.main-footer {
    background: #0b1f3a;
    color: #cbd5e1;
    padding-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1.1fr 1.1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
}

.f-brand {
    font-size: 24px;
    font-weight: 800;
    color: #ffffff;
    display: block;
    letter-spacing: 1px;
}

.f-sub {
    font-size: 11px;
    color: var(--accent-gold);
    display: block;
    font-weight: 600;
    margin-bottom: 15px;
}

.footer-col p {
    font-size: 13.5px;
    line-height: 1.7;
    margin-bottom: 10px;
}

.footer-col h4 {
    color: #ffffff;
    font-size: 16px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background: var(--accent-gold);
}

.footer-socials {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.footer-socials a {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    text-decoration: none;
    transition: var(--transition);
}

.footer-socials a:hover {
    background: var(--primary-blue);
    transform: translateY(-3px);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 13.5px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-links a:hover {
    color: #ffffff;
    transform: translateX(4px);
}

.footer-bottom {
    background: #071527;
    padding: 20px 0;
    font-size: 13px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.bottom-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.bottom-links a {
    color: #94a3b8;
    text-decoration: none;
    margin-left: 20px;
    transition: var(--transition);
}

.bottom-links a:hover {
    color: #ffffff;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .consult-box {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    .topbar-flex {
        flex-direction: column;
        align-items: flex-start;
    }
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
    .project-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .page-banner h1 {
        font-size: 28px;
    }
}