/* ============================================================
   Vietnam Robusta Coffee - Premium B2B Design System
   ============================================================ */

/* ─── Google Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Playfair+Display:wght@400;500;600;700&display=swap');

/* ─── CSS Custom Properties ─── */
:root {
    /* Primary - Rich Coffee Brown */
    --color-primary: #3C1810;
    --color-primary-light: #5D2E1F;
    --color-primary-dark: #2A0E08;

    /* Accent - Warm Gold */
    --color-accent: #C8973E;
    --color-accent-light: #D4A94F;
    --color-accent-dark: #A67B2E;
    --color-accent-glow: rgba(200, 151, 62, 0.3);

    /* Secondary - Deep Green */
    --color-secondary: #1B4332;
    --color-secondary-light: #2D6A4F;

    /* Neutrals */
    --color-bg: #0D0D0D;
    --color-bg-alt: #141414;
    --color-bg-card: #1A1A1A;
    --color-bg-elevated: #222222;
    --color-surface: #2A2A2A;
    --color-border: #333333;
    --color-border-light: #444444;

    /* Text */
    --color-text: #F5F0EB;
    --color-text-secondary: #B8A89A;
    --color-text-muted: #8A7968;
    --color-text-inverse: #0D0D0D;

    /* Status */
    --color-success: #2ECC71;
    --color-error: #E74C3C;
    --color-warning: #F39C12;
    --color-info: #3498DB;

    /* Live indicator */
    --color-live: #FF4444;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(200, 151, 62, 0.15);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Container */
    --container-max: 1280px;
    --container-narrow: 960px;

    /* Header */
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--color-accent-light);
}

/* ─── Typography ─── */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
}

h3 {
    font-size: clamp(1.2rem, 2.5vw, 1.75rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

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

.container--narrow {
    max-width: var(--container-narrow);
}

/* ─── Section ─── */
.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section--alt {
    background: var(--color-bg-alt);
}

.section--dark {
    background: var(--color-primary-dark);
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section__label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: rgba(200, 151, 62, 0.1);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(200, 151, 62, 0.2);
}

.section__title {
    margin-bottom: var(--space-md);
}

.section__subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 640px;
    margin: 0 auto;
}

/* ─── Buttons ─── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 32px;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.btn:hover::after {
    left: 100%;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-text-inverse);
    box-shadow: 0 4px 15px rgba(200, 151, 62, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(200, 151, 62, 0.45);
    color: var(--color-text-inverse);
}

.btn--secondary {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn--secondary:hover {
    background: rgba(200, 151, 62, 0.1);
    transform: translateY(-2px);
    color: var(--color-accent-light);
}

.btn--sm {
    padding: 10px 20px;
    font-size: 0.85rem;
}

.btn--lg {
    padding: 18px 42px;
    font-size: 1.05rem;
}

.btn--full {
    width: 100%;
    justify-content: center;
}

/* ─── Header / Navigation ─── */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    background: rgba(13, 13, 13, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-normal);
}

.header--scrolled {
    background: rgba(13, 13, 13, 0.95);
    box-shadow: var(--shadow-md);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.logo__icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

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

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav__list {
    display: flex;
    list-style: none;
    gap: var(--space-xs);
}

.nav__link {
    display: block;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-accent);
    background: rgba(200, 151, 62, 0.08);
}

/* Language Switcher */
.lang-switch {
    display: flex;
    align-items: center;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.lang-switch__btn {
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.lang-switch__btn--active {
    background: var(--color-accent);
    color: var(--color-text-inverse);
}

.lang-switch__btn:hover:not(.lang-switch__btn--active) {
    color: var(--color-accent);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ─── Hero Section ─── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-bg) 50%, var(--color-secondary) 100%);
    z-index: 0;
}

.hero__bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(200, 151, 62, 0.08) 0%, transparent 70%);
}

.hero__particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 1;
}

.hero__particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    opacity: 0.2;
    animation: float 6s ease-in-out infinite;
}

.hero__particle:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.hero__particle:nth-child(2) {
    top: 60%;
    left: 80%;
    animation-delay: 1s;
}

.hero__particle:nth-child(3) {
    top: 40%;
    left: 50%;
    animation-delay: 2s;
}

.hero__particle:nth-child(4) {
    top: 80%;
    left: 20%;
    animation-delay: 3s;
}

.hero__particle:nth-child(5) {
    top: 30%;
    left: 70%;
    animation-delay: 4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) scale(1);
        opacity: 0.2;
    }

    50% {
        transform: translateY(-20px) scale(1.5);
        opacity: 0.5;
    }
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.hero__label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent);
    padding: var(--space-sm) var(--space-md);
    background: rgba(200, 151, 62, 0.1);
    border: 1px solid rgba(200, 151, 62, 0.25);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-xl);
    animation: slideUp 0.8s ease forwards;
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    animation: slideUp 0.8s ease 0.1s forwards;
    opacity: 0;
}

.hero__title em {
    font-style: normal;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 540px;
    animation: slideUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero__actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    animation: slideUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Price Widget ─── */
.price-widget {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.price-widget::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-dark), transparent);
}

.price-widget__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.price-widget__title {
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.price-widget__live {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-live);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.price-widget__live::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--color-live);
    border-radius: var(--radius-full);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.3);
    }
}

.price-widget__price {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
    line-height: 1.1;
}

.price-widget__unit {
    font-size: 1rem;
    color: var(--color-text-muted);
    font-family: var(--font-primary);
    font-weight: 400;
}

.price-widget__change-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.price-widget__change-badge.price-widget__change--up {
    background: rgba(46, 204, 113, 0.15);
    color: var(--color-success);
}

.price-widget__change-badge.price-widget__change--down {
    background: rgba(231, 76, 60, 0.15);
    color: var(--color-error);
}

.price-widget__sparkline {
    width: 100%;
    height: 60px;
    margin-bottom: var(--space-md);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.price-widget__sparkline canvas {
    width: 100% !important;
    height: 100% !important;
}

.price-widget__details {
    margin-bottom: var(--space-sm);
}

.price-widget__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
    border-top: 1px solid var(--color-border);
}

.price-widget__label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.price-widget__value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
}

.price-widget__change {
    font-weight: 700;
}

.price-widget__change--up {
    color: var(--color-success);
}

.price-widget__change--down {
    color: var(--color-error);
}

.price-widget__source {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
    opacity: 0.8;
}


/* ─── Homepage Price Grid ─── */
.home-price-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

/* ─── Cards ─── */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-card);
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.card__image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background: var(--color-surface);
}

.card__body {
    padding: var(--space-xl);
}

.card__tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-accent);
    padding: 4px 10px;
    background: rgba(200, 151, 62, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.card__title {
    font-size: 1.2rem;
    margin-bottom: var(--space-sm);
}

.card__text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

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

/* ─── Grid System ─── */
.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid--auto {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* ─── Stats / Trust Signals ─── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.stat-card {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-3px);
}

.stat-card__icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    background: rgba(200, 151, 62, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-card__number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.stat-card__text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ─── Feature Cards ─── */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.feature-card {
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    border-color: rgba(200, 151, 62, 0.3);
    transform: translateY(-3px);
}

.feature-card__icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(200, 151, 62, 0.15), rgba(200, 151, 62, 0.05));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: var(--space-lg);
}

.feature-card__title {
    font-size: 1.15rem;
    font-family: var(--font-primary);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-card__text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ─── Product Specs Table ─── */
.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--color-border);
}

.specs-table th,
.specs-table td {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    font-size: 0.95rem;
}

.specs-table th {
    color: var(--color-text-muted);
    font-weight: 500;
    width: 40%;
}

.specs-table td {
    color: var(--color-text);
    font-weight: 600;
}

/* ─── Forms ─── */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 14px 18px;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(200, 151, 62, 0.15);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%238A7968' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 14px;
    padding-right: 40px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

/* ─── Alerts ─── */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9rem;
    border: 1px solid;
}

.alert-success {
    background: rgba(46, 204, 113, 0.1);
    border-color: rgba(46, 204, 113, 0.3);
    color: var(--color-success);
}

.alert-error {
    background: rgba(231, 76, 60, 0.1);
    border-color: rgba(231, 76, 60, 0.3);
    color: var(--color-error);
}

.alert-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.7;
}

/* ─── Footer ─── */
.footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer__brand {
    max-width: 320px;
}

.footer__brand .logo {
    margin-bottom: var(--space-lg);
}

.footer__desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.footer__heading {
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.footer__list {
    list-style: none;
}

.footer__list li {
    margin-bottom: var(--space-sm);
}

.footer__list a {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.footer__list a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer__bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ─── Floating Contact Buttons ─── */
.floating-contacts {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 999;
}

.floating-btn {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.3rem;
    text-decoration: none;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
}

.floating-btn:hover {
    transform: scale(1.1) translateY(-2px);
    color: #fff;
}

.floating-btn--whatsapp {
    background: #25D366;
}

.floating-btn--zalo {
    background: #0068FF;
}

.floating-btn--telegram {
    background: #0088CC;
}

.floating-btn--email {
    background: var(--color-accent);
}

.floating-btn--top {
    background: var(--color-surface);
    color: var(--color-text);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
}

.floating-btn--top.visible {
    opacity: 1;
    pointer-events: all;
}

/* ─── Breadcrumb ─── */
.breadcrumb {
    padding: var(--space-md) 0;
    margin-top: var(--header-height);
}

.breadcrumb__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    list-style: none;
    font-size: 0.85rem;
}

.breadcrumb__list li::after {
    content: '/';
    margin-left: var(--space-sm);
    color: var(--color-text-muted);
}

.breadcrumb__list li:last-child::after {
    display: none;
}

.breadcrumb__list a {
    color: var(--color-text-muted);
}

.breadcrumb__list a:hover {
    color: var(--color-accent);
}

.breadcrumb__list li:last-child {
    color: var(--color-text-secondary);
}

/* ─── Page Header ─── */
.page-header {
    padding: var(--space-4xl) 0 var(--space-2xl);
    margin-top: var(--header-height);
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-bg));
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.page-header__title {
    margin-bottom: var(--space-md);
}

.page-header__subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ─── Market Dashboard Charts ─── */
.chart-container {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    position: relative;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.chart-title {
    font-size: 1.15rem;
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--color-text);
}

.chart-unit {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

/* Period tab switcher */
.chart-tabs {
    display: flex;
    gap: 4px;
    background: var(--color-bg-elevated);
    border-radius: var(--radius-md);
    padding: 3px;
}

.chart-tab {
    padding: 7px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: var(--font-primary);
    color: var(--color-text-muted);
    background: transparent;
    border: none;
    border-radius: calc(var(--radius-md) - 2px);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.chart-tab:hover {
    color: var(--color-text);
}

.chart-tab--active {
    background: var(--color-accent);
    color: var(--color-text-inverse);
}

/* Chart canvas wrapper */
.chart-canvas-wrapper {
    width: 100%;
    height: 340px;
    position: relative;
}

.chart-canvas-wrapper canvas {
    width: 100% !important;
    height: 100% !important;
}

/* Empty state */
.chart-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 240px;
    color: var(--color-text-muted);
    text-align: center;
    gap: var(--space-md);
}

.chart-empty__icon {
    font-size: 2.5rem;
    opacity: 0.5;
}

/* Price Summary Cards */
.price-summary-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.price-summary-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--transition-normal);
}

.price-summary-card:hover {
    border-color: rgba(200, 151, 62, 0.3);
    transform: translateY(-2px);
}

.price-summary-card__label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.price-summary-card__value {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
}

.price-summary-card__value--highlight {
    color: var(--color-accent);
}

.price-summary-card__value--up {
    color: var(--color-success);
}

.price-summary-card__value--down {
    color: var(--color-error);
}

/* ─── Contact Page ─── */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    text-decoration: none;
}

.contact-method:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.contact-method__icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.contact-method__icon--email {
    background: rgba(200, 151, 62, 0.15);
}

.contact-method__icon--whatsapp {
    background: rgba(37, 211, 102, 0.15);
}

.contact-method__icon--zalo {
    background: rgba(0, 104, 255, 0.15);
}

.contact-method__icon--telegram {
    background: rgba(0, 136, 204, 0.15);
}

.contact-method__info h4 {
    font-family: var(--font-primary);
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.contact-method__info p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* ─── Blog ─── */
.blog-card {
    display: flex;
    flex-direction: column;
}

.blog-card__image {
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-secondary));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-accent);
}

.blog-card__body {
    flex: 1;
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.blog-card__meta {
    display: flex;
    gap: var(--space-md);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.blog-card__title {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
}

.blog-card__title a {
    color: var(--color-text);
}

.blog-card__title a:hover {
    color: var(--color-accent);
}

.blog-card__excerpt {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

/* ─── Blog Detail ─── */
.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-3xl) 0;
}

.article-content h2 {
    margin: var(--space-2xl) 0 var(--space-md);
}

.article-content h3 {
    margin: var(--space-xl) 0 var(--space-md);
}

.article-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

.article-content li {
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

/* ─── Inquiry Form Section ─── */
.inquiry-section {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-bg));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.inquiry-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(200, 151, 62, 0.08), transparent);
    border-radius: var(--radius-full);
}

/* ─── 404 Page ─── */
.error-page {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-4xl) 0;
}

.error-page__code {
    font-family: var(--font-display);
    font-size: 8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: var(--space-md);
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    .nav__list {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: var(--space-xl);
        gap: var(--space-sm);
        z-index: 999;
    }

    .nav__list.active {
        display: flex;
    }

    .nav__link {
        padding: var(--space-md);
        font-size: 1.1rem;
    }

    .nav-toggle {
        display: flex;
    }

    .hero__title {
        font-size: clamp(2rem, 7vw, 3rem);
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .btn {
        width: 100%;
        justify-content: center;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .stats-grid,
    .feature-grid {
        grid-template-columns: 1fr;
    }

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

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

    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    /* ─── Price Widget Mobile ─── */
    .price-widget {
        padding: var(--space-lg);
    }

    .price-widget__price {
        font-size: 2rem;
    }

    .price-widget__sparkline {
        height: 50px;
    }

    .home-price-grid {
        grid-template-columns: 1fr;
    }

    .price-widget__label {
        font-size: 0.8rem;
    }

    .price-widget__value {
        font-size: 0.85rem;
    }

    /* ─── Chart Mobile ─── */
    .chart-container {
        padding: var(--space-lg);
    }

    .chart-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .chart-tabs {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .chart-tab {
        padding: 6px 14px;
        font-size: 0.75rem;
    }

    .chart-canvas-wrapper {
        height: 240px;
    }

    .chart-title {
        font-size: 1rem;
    }

    /* ─── Price Summary Mobile ─── */
    .price-summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .price-summary-card {
        padding: var(--space-md);
    }

    .price-summary-card__value {
        font-size: 1.1rem;
    }

    .price-summary-card__label {
        font-size: 0.7rem;
    }

    .section {
        padding: var(--space-3xl) 0;
    }

    .page-header {
        padding: var(--space-3xl) 0 var(--space-xl);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

    .floating-contacts {
        bottom: 16px;
        right: 16px;
    }

    .floating-btn {
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }

    /* ─── Small Mobile Charts ─── */
    .chart-canvas-wrapper {
        height: 200px;
    }

    .price-summary-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .price-summary-card__value {
        font-size: 1rem;
    }

    .price-widget__price {
        font-size: 1.75rem;
    }

    .price-widget__change-badge {
        font-size: 0.75rem;
        padding: 3px 10px;
    }
}