/* ==========================================================================
   Sunny Studio - Premium Kỷ Yếu & Photography Studio Design System
   Architecture: Vanilla CSS with Modern Variables, Flexbox/Grid, and Micro-animations
   Color Palette: Warm Antique Golden Bronze (#c7974e) & Deep Obsidian Charcoal
   Typography: Plus Jakarta Sans & Be Vietnam Pro (Full Vietnamese Support)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
    /* Color Palette - Curated around #c7974e (Warm Golden Bronze) */
    --color-accent: #c7974e;         /* Primary Dominant Gold / Bronze */
    --color-accent-hover: #a87b38;   /* Deep Golden Bronze for Hover/Active */
    --color-accent-light: #fdf8f0;   /* Soft Cream Gold Tint for Backgrounds/Pills */
    --color-accent-subtle: #f7ede0;  /* Subtle Gold Border/Section Tint */
    
    /* Dark & Neutral Colors */
    --color-primary-dark: #16181d;   /* Obsidian Dark Charcoal for Headings & Footer */
    --color-primary: #242730;        /* Deep Slate for Body Titles/Elements */
    --color-secondary: #3b404e;      /* Medium Slate Gray */
    
    /* Backgrounds & Borders */
    --color-bg: #ffffff;
    --color-bg-alt: #fbf9f5;         /* Warm Ivory Cream for Alternating Sections */
    --color-bg-warm: #f8eedf;
    --color-surface: #ffffff;        /* Clean Surface / Card Background */
    --color-surface-dark: #23272f;   /* Dark Surface Background */
    --color-border: #eae3d8;         /* Subtle Warm Border */
    --color-text-main: #2b2e38;      /* High Contrast Dark Text */
    --color-text-muted: #646873;     /* Muted Gray Text */
    --color-white: #ffffff;

    /* Typography Variables */
    --font-body: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Shadows & Effects */
    --shadow-sm: 0 1px 3px rgba(22, 24, 29, 0.05), 0 1px 2px rgba(22, 24, 29, 0.03);
    --shadow-md: 0 4px 10px -2px rgba(22, 24, 29, 0.08), 0 2px 4px -2px rgba(22, 24, 29, 0.04);
    --shadow-lg: 0 14px 24px -4px rgba(22, 24, 29, 0.1), 0 6px 12px -4px rgba(22, 24, 29, 0.04);
    --shadow-xl: 0 24px 38px -6px rgba(22, 24, 29, 0.12), 0 10px 16px -6px rgba(22, 24, 29, 0.05);
    --shadow-gold: 0 10px 25px -5px rgba(199, 151, 78, 0.38);
    
    /* Layout Variables */
    --max-width: 1280px;
    --header-height: 80px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base & Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--color-text-main);
    background-color: var(--color-bg);
    line-height: 1.68;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Plus Jakarta Sans', 'Be Vietnam Pro', sans-serif;
    font-weight: 700;
    line-height: 1.28;
    color: var(--color-primary-dark);
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.section-title-wrap {
    max-width: 780px;
    margin: 0 auto 56px auto;
    text-align: center;
}

.section-tag {
    display: inline-block;
    padding: 6px 18px;
    background-color: var(--color-accent-light);
    color: var(--color-accent-hover);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-accent-subtle);
    margin-bottom: 14px;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
    letter-spacing: -0.5px;
    color: var(--color-primary-dark);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

/* Button Component */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 30px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.98rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 14px 28px -4px rgba(199, 151, 78, 0.48);
}

.btn-secondary {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

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

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.site-header.scrolled {
    height: 72px;
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 800;
    font-size: 1.4rem;
    font-family: 'Plus Jakarta Sans', sans-serif;
    box-shadow: var(--shadow-sm);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    line-height: 1.1;
    letter-spacing: -0.5px;
}

.logo-subtitle {
    font-size: 0.72rem;
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.96rem;
    font-weight: 600;
    color: var(--color-primary);
    padding: 8px 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.hotline-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--color-accent-light);
    border: 1px solid var(--color-accent-subtle);
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    transition: var(--transition-fast);
}

.hotline-pill:hover {
    border-color: var(--color-accent);
    background-color: var(--color-accent);
    color: var(--color-white);
}

.hotline-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.hotline-pill:hover .hotline-icon {
    background-color: var(--color-white);
    color: var(--color-accent);
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--color-primary-dark);
}

/* ==========================================================================
   HERO BANNER & SLIDER (STATIC HERO FOR INDEX.HTML)
   ========================================================================== */
.hero-section {
    position: relative;
    padding: 80px 0 100px 0;
    background: radial-gradient(circle at 85% 15%, rgba(199, 151, 78, 0.12) 0%, transparent 55%),
                radial-gradient(circle at 15% 85%, rgba(22, 24, 29, 0.05) 0%, transparent 55%),
                linear-gradient(to bottom, #ffffff, #fbf9f5);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: 48px;
}

.hero-content {
    max-width: 640px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background-color: var(--color-accent-light);
    border: 1px solid var(--color-accent-subtle);
    border-radius: var(--radius-full);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-accent-hover);
    margin-bottom: 24px;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.35); }
}

.hero-title {
    font-size: 3.4rem;
    font-weight: 800;
    line-height: 1.16;
    color: var(--color-primary-dark);
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-title .highlight {
    color: var(--color-accent);
    position: relative;
    display: inline-block;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 0;
    width: 100%;
    height: 10px;
    background-color: rgba(199, 151, 78, 0.22);
    z-index: -1;
    border-radius: 4px;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    margin-bottom: 36px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 36px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    line-height: 1;
}

.stat-label {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    margin-top: 4px;
    font-weight: 500;
}

.hero-visual {
    position: relative;
}

.hero-collage {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 16px;
    position: relative;
}

.collage-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 4px solid var(--color-white);
    transition: var(--transition-smooth);
}

.collage-item:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 25px 35px -5px rgba(22, 24, 29, 0.18);
}

.collage-item.large {
    grid-row: span 2;
    height: 100%;
    min-height: 480px;
}

.collage-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.collage-tag {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(22, 24, 29, 0.88);
    backdrop-filter: blur(8px);
    color: var(--color-white);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(255,255,255,0.15);
}

.hero-floating-badge {
    position: absolute;
    bottom: 40px;
    left: -28px;
    background-color: var(--color-white);
    padding: 16px 22px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 14px;
    border: 1px solid var(--color-border);
    z-index: 10;
}

.floating-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-accent-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
}

.floating-text h4 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.floating-text p {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   HERO SLIDER CAROUSEL (FOR INDEX-2.HTML)
   ========================================================================== */
.hero-slider-section {
    position: relative;
    width: 100%;
    height: calc(100vh - var(--header-height));
    min-height: 650px;
    max-height: 860px;
    overflow: hidden;
    background-color: var(--color-primary-dark);
}

.hero-slider-wrap {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    display: flex;
    align-items: center;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    transition: transform 6s cubic-bezier(0.25, 1, 0.5, 1);
}

.hero-slide.active .slide-bg {
    transform: scale(1);
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(22, 24, 29, 0.86) 0%, rgba(22, 24, 29, 0.65) 55%, rgba(22, 24, 29, 0.3) 100%);
}

.slide-content {
    position: relative;
    z-index: 3;
    max-width: 760px;
    color: var(--color-white);
}

.slide-tag {
    display: inline-block;
    padding: 6px 18px;
    background-color: var(--color-accent);
    color: var(--color-white);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-radius: var(--radius-full);
    margin-bottom: 20px;
    box-shadow: var(--shadow-gold);
}

.slide-title {
    font-size: 3.6rem;
    font-weight: 800;
    line-height: 1.18;
    color: var(--color-white);
    margin-bottom: 20px;
    letter-spacing: -1px;
}

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

.slide-desc {
    font-size: 1.2rem;
    color: #e2e8f0;
    margin-bottom: 36px;
    line-height: 1.68;
}

.slide-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

/* Slider Navigation Controls */
.slider-controls {
    position: absolute;
    bottom: 40px;
    right: 48px;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 14px;
}

.slider-btn {
    width: 52px;
    height: 52px;
    background-color: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider-btn:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    transform: scale(1.08);
}

.slider-dots {
    position: absolute;
    bottom: 44px;
    left: 48px;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.slider-dot.active {
    width: 36px;
    border-radius: 6px;
    background-color: var(--color-accent);
}

/* ==========================================================================
   CONCEPTS & CORE SERVICES (KỶ YẾU & CÁC GÓI CHỤP)
   ========================================================================== */
.services-section {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.service-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 12px 26px;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.94rem;
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    border-color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.filter-btn.active {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-gold);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-accent);
}

.service-img-wrap {
    position: relative;
    padding-top: 68%;
    overflow: hidden;
}

.service-img-wrap img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.service-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    z-index: 2;
    box-shadow: var(--shadow-md);
}

.service-content {
    padding: 28px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.service-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-primary-dark);
}

.service-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
    flex-grow: 1;
}

.service-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 18px;
    border-top: 1px solid var(--color-border);
}

.service-price {
    display: flex;
    flex-direction: column;
}

.price-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    font-weight: 600;
}

.price-val {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-accent-hover);
}

.service-link {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.service-link:hover {
    color: var(--color-accent);
    gap: 10px;
}

/* ==========================================================================
   PACKAGES & PRICING TABLE (CÁC GÓI CHỤP KỶ YẾU & GIA ĐÌNH)
   ========================================================================== */
.pricing-section {
    padding: 100px 0;
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.pricing-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 56px;
}

.pricing-tab-btn {
    padding: 14px 32px;
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.pricing-tab-btn.active {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-gold);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    align-items: center;
}

.pricing-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    padding: 40px 32px;
    position: relative;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-md);
}

.pricing-card.featured {
    border: 2px solid var(--color-accent);
    box-shadow: var(--shadow-xl);
    transform: scale(1.05);
    background: linear-gradient(to bottom, #ffffff, #fefbfa);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.popular-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-accent);
    color: var(--color-white);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 6px 20px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-gold);
}

.pricing-header {
    text-align: center;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 28px;
}

.pricing-name {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
}

.pricing-sub {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.pricing-val {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent-hover);
    line-height: 1;
}

.pricing-unit {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.pricing-features {
    margin-bottom: 32px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 0.95rem;
    color: var(--color-primary);
}

.feature-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
    font-weight: 800;
    font-size: 0.75rem;
}

/* ==========================================================================
   WHY CHOOSE US (CHỤP ẢNH TẠI SUNNY STUDIO BẠN ĐƯỢC GÌ?)
   ========================================================================== */
.advantages-section {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
}

.adv-card {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    padding: 34px;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: var(--transition-smooth);
}

.adv-card:hover {
    background-color: var(--color-white);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.adv-icon-box {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--color-primary-dark), #2c303b);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.adv-content h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-primary-dark);
}

.adv-content p {
    color: var(--color-text-muted);
    font-size: 0.98rem;
    line-height: 1.66;
}

/* ==========================================================================
   ALBUMS SHOWCASE / GALLERY (ALBUM ẢNH TIÊU BIỂU)
   ========================================================================== */
.gallery-section {
    padding: 100px 0;
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
    aspect-ratio: 4/5;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.92;
}

.gallery-item:hover img {
    transform: scale(1.1);
    opacity: 0.8;
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 28px 20px 20px 20px;
    background: linear-gradient(to top, rgba(22, 24, 29, 0.95) 0%, rgba(22, 24, 29, 0.6) 60%, transparent 100%);
    color: var(--color-white);
    transform: translateY(8px);
    transition: var(--transition-smooth);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-cat {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--color-accent);
    font-weight: 700;
    margin-bottom: 4px;
    display: block;
}

.gallery-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 4px;
}

.gallery-date {
    font-size: 0.8rem;
    color: #cbd5e1;
}

/* ==========================================================================
   CUSTOMER TESTIMONIALS (TRẢI NGHIỆM CỦA KHÁCH HÀNG)
   ========================================================================== */
.testimonials-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-primary-dark), #242730);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.testimonials-section .section-title {
    color: var(--color-white);
}

.testimonials-section .section-subtitle {
    color: #cbd5e1;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(199, 151, 78, 0.25);
    border-radius: var(--radius-lg);
    padding: 36px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.quote-text {
    font-size: 1.08rem;
    line-height: 1.75;
    font-style: italic;
    color: #f1f5f9;
    margin-bottom: 24px;
}

.client-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.client-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-accent);
}

.client-meta h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 2px;
}

.client-meta p {
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
}

/* ==========================================================================
   NEWS & PHOTOGRAPHY GUIDES (TIN TỨC - SỰ KIỆN)
   ========================================================================== */
.news-section {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.news-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-accent);
}

.news-img {
    padding-top: 60%;
    position: relative;
    overflow: hidden;
}

.news-img img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-img img {
    transform: scale(1.06);
}

.news-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.news-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-primary-dark);
    line-height: 1.42;
}

.news-excerpt {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

.news-more {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-accent-hover);
    align-self: flex-start;
}

/* ==========================================================================
   ABOUT SUMMARY SECTION (GIỚI THIỆU VỀ SUNNY STUDIO)
   ========================================================================== */
.about-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #fdfaf5 0%, #f9f1e4 100%);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    align-items: center;
    gap: 56px;
}

.about-visual img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 6px solid var(--color-white);
}

.about-content h2 {
    font-size: 2.4rem;
    margin-bottom: 20px;
    color: var(--color-primary-dark);
}

.about-content p {
    font-size: 1.05rem;
    color: var(--color-primary);
    margin-bottom: 18px;
}

.about-list {
    margin: 24px 0 32px 0;
}

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    font-weight: 500;
    color: var(--color-primary-dark);
}

.about-list li span.bullet {
    width: 22px;
    height: 22px;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.75rem;
    flex-shrink: 0;
    margin-top: 3px;
}

/* ==========================================================================
   FOOTER & CONTACT SECTION
   ========================================================================== */
.contact-section {
    padding: 96px 0;
    background-color: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.contact-grid .bezel-inner {
    padding: 36px;
}

.site-footer {
    background-color: var(--color-primary-dark);
    color: #94a3b8;
    padding: 72px 0 32px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-col h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 36px;
    height: 3px;
    background-color: var(--color-accent);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo .logo-title {
    color: var(--color-white);
}

.footer-about {
    color: #94a3b8;
    font-size: 0.92rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    color: #cbd5e1;
    font-size: 0.92rem;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #94a3b8;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 6px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    color: #64748b;
    font-size: 0.88rem;
}

.footer-bottom-copy {
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
    font-size: 0.88rem;
}

/* ==========================================================================
   FLOATING ACTION BUTTONS (ZALO / HOTLINE / MAPS)
   ========================================================================== */
.floating-actions {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 990;
}

.float-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    border-radius: var(--radius-full);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: var(--shadow-xl);
    transition: var(--transition-fast);
    text-decoration: none;
}

.float-zalo {
    background-color: #0068ff;
    color: var(--color-white);
}

.float-hotline {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.float-btn:hover {
    transform: scale(1.08);
}

/* ==========================================================================
   RESPONSIVE DESIGN (TABLET & MOBILE)
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-content {
        text-align: center;
        margin: 0 auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .services-grid,
    .pricing-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
        margin-bottom: 36px;
    }
    
    .contact-section {
        padding: 64px 0;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .slide-title {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .site-header .logo-text {
        display: none;
    }

    .header-inner .nav-menu {
        display: none;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 2.4rem;
    }
    
    .services-grid,
    .pricing-grid,
    .advantages-grid,
    .testimonials-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        margin-bottom: 32px;
    }

    .contact-section {
        padding: 48px 0;
    }

    .contact-grid {
        gap: 32px;
    }

    .contact-grid .bezel-inner {
        padding: 24px 20px;
    }

    .site-footer {
        padding: 48px 0 24px 0;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-6px);
    }

    .slide-title {
        font-size: 2.2rem;
    }

    .slider-controls, .slider-dots {
        left: 24px;
        right: 24px;
        bottom: 24px;
    }

    .slider-controls {
        justify-content: flex-end;
    }
}

@media (max-width: 480px) {
    .contact-grid .bezel-inner {
        padding: 20px 16px;
    }

    .contact-grid .btn-island {
        padding: 12px 16px;
        font-size: 0.88rem;
    }
}