:root {
    color-scheme: light;
    --ink: #2b2e34;
    --ink-soft: #6b7280;
    --paper: #f4f8ff;
    --sand: #6fb1fc;
    --clay: #dcebff;
    --sunset: #f59e0b;
    --sunset-dark: #d97706;
    --teal: #3a7bd5;
    --teal-dark: #2f5fb3;
    --forest: #2f5fb3;
    --white: #ffffff;
    --border: rgba(43, 46, 52, 0.12);
    --shadow: 0 20px 45px rgba(43, 46, 52, 0.12);
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --transition: 0.3s ease;
}

* {
    box-sizing: border-box;
}

body.page {
    margin: 0;
    font-family: "Times New Roman", Times, serif;
    color: var(--ink);
    background: var(--paper);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

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

.page-bg {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 30% 20%, rgba(58, 123, 213, 0.35), transparent 60%),
        linear-gradient(135deg, #f4f8ff 0%, #e8f2ff 45%, #d7e8ff 100%);
    z-index: -2;
}

.container {
    width: min(1200px, 92vw);
    margin: 0 auto;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.24em;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--teal);
    margin-bottom: 16px;
}

.lead {
    font-size: 1.05rem;
    color: var(--ink-soft);
}

.muted {
    color: var(--ink-soft);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--teal);
    color: var(--white);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 18px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
}

.brand-mark {
    display: inline-flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    padding: 6px;
}

.brand-mark img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.brand-text {
    font-size: 1rem;
}

.site-nav {
    display: flex;
    gap: 20px;
    font-size: 0.95rem;
}

.site-nav a {
    color: rgba(255, 255, 255, 0.85);
    transition: color var(--transition);
}

.site-nav a:hover {
    color: var(--white);
}

.header-actions {
    display: flex;
    gap: 12px;
}

.btn {
    border: 1px solid transparent;
    padding: 12px 20px;
    border-radius: 999px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--sunset);
    color: var(--white);
    box-shadow: 0 12px 25px rgba(245, 158, 11, 0.35);
}

.btn-primary:hover {
    background: var(--sunset-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--teal);
    color: var(--white);
    box-shadow: 0 12px 25px rgba(58, 123, 213, 0.35);
}

.btn-secondary:hover {
    background: var(--teal-dark);
    transform: translateY(-2px);
}

.btn-ghost {
    border-color: var(--teal);
    color: var(--teal);
    background: transparent;
}

.btn-ghost:hover {
    background: rgba(58, 123, 213, 0.12);
}

.site-header .btn-ghost,
.admin-header .btn-ghost {
    border-color: rgba(255, 255, 255, 0.7);
    color: var(--white);
}

.site-header .btn-ghost:hover,
.admin-header .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
}

.section {
    padding: 40px 0;
}

.section-head {
    margin-bottom: 40px;
}

.section-head h2 {
    font-family: "Times New Roman", Times, serif;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    margin: 0 0 12px;
}

.hero {
    padding: 40px 0 40px;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    align-items: center;
}

.hero-content h1 {
    font-family: "Times New Roman", Times, serif;
    font-size: clamp(2.6rem, 4vw, 3.6rem);
    margin: 0 0 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 24px;
}

.hero-stats {
    display: flex;
    gap: 24px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.hero-stats div {
    background: rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    min-width: 140px;
}

.stat-value {
    display: block;
    font-weight: 700;
    font-size: 1.3rem;
}

.hero-visual {
    position: relative;
}

.hero-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    animation: float 6s ease-in-out infinite;
}

.hero-card img {
    width: 100%;
}

.hero-badge {
    position: absolute;
    bottom: 24px;
    left: 24px;
    background: var(--teal);
    color: var(--white);
    padding: 10px 16px;
    border-radius: 999px;
    font-size: 0.85rem;
}

.hero-route {
    position: absolute;
    right: -40px;
    bottom: -20px;
    width: 200px;
    opacity: 0.9;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.calc-form .field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.calc-form input,
.calc-form textarea,
.calc-form select {
    border: 1px solid var(--border);
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.8);
}

.calc-form .checkbox {
    flex-direction: row;
    align-items: flex-start;
}

.calc-form .checkbox input {
    margin-right: 10px;
    margin-top: 2px;
}

.field-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.hint {
    font-size: 0.85rem;
    color: var(--ink-soft);
}

.form-note {
    font-size: 0.85rem;
    color: var(--ink-soft);
}

.calc-summary {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.summary-card {
    background: var(--sand);
    padding: 24px;
    border-radius: var(--radius-md);
}

.summary-card h3 {
    margin-top: 0;
    font-family: "Times New Roman", Times, serif;
}

.summary-row,
.summary-total {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
}

.summary-total {
    font-size: 1.2rem;
    font-weight: 700;
    border-top: 1px dashed rgba(20, 32, 43, 0.2);
    padding-top: 12px;
}

.summary-note {
    font-size: 0.85rem;
    color: var(--ink-soft);
}

.summary-breakdown {
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-md);
    padding: 18px;
    border: 1px dashed var(--border);
    font-size: 0.9rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.price-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow);
}

.price-card .price {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 12px 0 6px;
}

.surcharge-table {
    margin-top: 32px;
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow);
}

.surcharge-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.surcharge-table th,
.surcharge-table td {
    text-align: left;
    padding: 12px 10px;
    border-bottom: 1px solid var(--border);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    align-items: start;
}

.about-card {
    background: var(--ink);
    color: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow);
}

.about-card ul {
    padding-left: 18px;
    margin: 16px 0 24px;
}

.about-list {
    display: grid;
    gap: 16px;
    margin-top: 24px;
}

.card-grid,
.post-grid,
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.testimonial-slider {
    overflow: hidden;
}

.testimonial-grid.is-slider {
    display: flex;
    flex-wrap: nowrap;
    width: max-content;
    animation: testimonial-scroll var(--scroll-duration, 5s) linear infinite;
}

.testimonial-grid.is-slider .testimonial-card {
    flex: 0 0 260px;
}

.card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 22px;
    box-shadow: var(--shadow);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--clay);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 16px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.gallery-item {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.gallery-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.gallery-item figcaption {
    padding: 12px 16px;
    font-size: 0.9rem;
}

.post-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.post-card img {
    height: 180px;
    object-fit: cover;
}

.post-content {
    padding: 18px;
}

.post-meta {
    display: block;
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--ink-soft);
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 22px;
    box-shadow: var(--shadow);
}

.rating {
    color: var(--sunset);
    margin-bottom: 12px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
}

@keyframes testimonial-scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.testimonial-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--clay);
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-meta {
    display: flex;
    flex-direction: column;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.contact-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow);
}

.contact-list {
    display: grid;
    gap: 16px;
    margin-top: 20px;
}

.contact-list .label {
    display: block;
    font-size: 0.8rem;
    color: var(--ink-soft);
}

.contact-panel {
    background: var(--sand);
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow);
}

.mini-form .field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 14px;
}

.mini-form input,
.mini-form textarea {
    border: 1px solid var(--border);
    padding: 12px;
    border-radius: var(--radius-sm);
}

.site-footer {
    background: var(--teal-dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.footer-title {
    margin-top: 0;
}

.footer-bottom {
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.7;
}

[data-reveal] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Admin styles */
.admin-page {
    background: var(--paper);
}

.admin-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    background: var(--teal);
    color: var(--white);
    position: sticky;
    top: 0;
    z-index: 10;
}

.admin-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 16px 0;
}

.admin-nav {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.92rem;
}

.admin-nav a {
    color: rgba(255, 255, 255, 0.85);
}

.admin-main {
    padding: 40px 0 80px;
}

.admin-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
}

.admin-heading h1 {
    margin: 0 0 6px;
    font-family: "Times New Roman", Times, serif;
}

.panel {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.admin-form .field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.admin-form input,
.admin-form textarea,
.admin-form select {
    border: 1px solid var(--border);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
}

.field-inline {
    margin-bottom: 16px;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.form-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.table-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow);
}

.table-card table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.table-card th,
.table-card td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--border);
}

.table-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.table-actions form {
    margin: 0;
}

.link {
    color: var(--teal);
    font-weight: 600;
}

.link.danger {
    color: var(--sunset);
    background: none;
    border: none;
    padding: 0;
    font: inherit;
    cursor: pointer;
}

.notice {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.notice.success {
    background: rgba(58, 123, 213, 0.12);
    color: var(--teal-dark);
}

.notice.error {
    background: rgba(245, 158, 11, 0.18);
    color: var(--sunset-dark);
}

.image-preview {
    margin-top: 12px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border);
    max-width: 260px;
}

.image-preview img {
    width: 100%;
    height: auto;
}

.gallery-admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.gallery-admin-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.gallery-admin-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.gallery-admin-info {
    padding: 14px;
}

.empty-state {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    color: var(--ink-soft);
}

.auth-card {
    max-width: 420px;
    margin: 40px auto 0;
}

.contact-fabs {
    position: fixed;
    right: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 60;
}

.contact-fab {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 12px 24px rgba(20, 32, 43, 0.22);
    transition: transform var(--transition), box-shadow var(--transition);
    animation: shake 4.5s ease-in-out infinite;
}

.contact-fab:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 28px rgba(20, 32, 43, 0.28);
}

.contact-fab-icon {
    width: 58px;
    height: 58px;
    display: block;
}

.contact-fab-zalo {
    --fab-color: #0084ff;
    animation-delay: 0s;
}

.contact-fab-call {
    --fab-color: var(--sunset);
    animation-delay: 0.5s;
}

.contact-fab-whatsapp {
    --fab-color: #25d366;
    animation-delay: 1s;
}

@keyframes shake {
    0%, 90%, 100% { transform: translateX(0) rotate(0); }
    92% { transform: translateX(-2px) rotate(-2deg); }
    94% { transform: translateX(2px) rotate(2deg); }
    96% { transform: translateX(-2px) rotate(-1deg); }
    98% { transform: translateX(2px) rotate(1deg); }
}

@media (max-width: 960px) {
    .site-nav {
        display: none;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-end;
    }
}

@media (max-width: 720px) {
    .section {
        padding: 28px 0;
    }

    .section-head {
        margin-bottom: 24px;
    }

    .header-inner {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
    }

    .brand {
        justify-content: flex-start;
    }

    .brand-mark {
        width: 36px;
        height: 36px;
    }

    .brand-text {
        text-align: left;
        font-size: 0.95rem;
    }

    .header-actions {
        width: auto;
    }

    .header-actions .btn {
        width: auto;
        justify-content: flex-end;
        text-align: right;
        font-size: 0.95rem;
        padding: 8px 12px;
        white-space: nowrap;
    }

    .hero-content h1 {
        font-size: clamp(2rem, 8vw, 2.6rem);
    }

    .hero-actions {
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-stats {
        gap: 12px;
    }

    .hero-stats div {
        min-width: 0;
        flex: 1 1 100%;
    }

    .calculator-grid {
        padding: 20px;
        gap: 20px;
    }

    .summary-card {
        padding: 18px;
    }

    .surcharge-table {
        overflow-x: auto;
    }

    .gallery-item img {
        height: 150px;
    }

    .post-card img {
        height: 160px;
    }

    .testimonial-grid.is-slider .testimonial-card {
        flex: 0 0 220px;
    }

    .contact-fabs {
        right: 12px;
        bottom: 12px;
    }

    .contact-fab,
    .contact-fab-icon {
        width: 50px;
        height: 50px;
    }

    .hero-route {
        display: none;
    }

    .header-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .field-grid {
        grid-template-columns: 1fr;
    }

    .admin-heading {
        flex-direction: column;
        align-items: flex-start;
    }

    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    .testimonial-grid.is-slider .testimonial-card {
        flex: 0 0 200px;
    }
}