/**
 * ============================================================================
 * NV CASINO - DARK THEME STYLESHEET
 * ============================================================================
 * 
 * A comprehensive dark theme CSS for the NV Casino website.
 * 
 * TABLE OF CONTENTS:
 * 1. CSS Variables (Custom Properties)
 * 2. Reset & Base Styles
 * 3. Typography
 * 4. Layout Components
 * 5. Header & Navigation
 * 6. Hero Banner Section
 * 7. Breadcrumbs
 * 8. Slots Grid Section
 * 9. Content Section
 * 10. Tables (Responsive)
 * 11. Lists & Ordered Lists
 * 12. Call-to-Action Buttons
 * 13. Footer & Payment Icons
 * 14. Mobile Lock Screen Overlay
 * 15. Responsive Breakpoints
 * 16. Utility Classes
 * 17. Animations & Transitions
 * ============================================================================
 */

/* ============================================================================
   1. CSS VARIABLES (CUSTOM PROPERTIES)
   ============================================================================
   Define all theme colors, spacing, typography, and other design tokens here.
   This makes it easy to maintain consistency and update the theme globally.
*/
:root {
    /* -- Primary Color Palette -- */
    --color-primary: #8b5cf6;           /* Purple accent - main brand color */
    --color-primary-light: #a78bfa;     /* Lighter purple for hover states */
    --color-primary-dark: #7c3aed;      /* Darker purple for active states */
    
    /* -- Secondary Colors -- */
    --color-secondary: #f59e0b;         /* Gold/amber for highlights */
    --color-secondary-light: #fbbf24;   /* Light gold */
    --color-secondary-dark: #d97706;    /* Dark gold */
    
    /* -- Background Colors (Dark Theme) -- */
    --bg-body: #0f0f1a;                 /* Main body background - deep dark blue */
    --bg-surface: #1a1a2e;              /* Card/surface background */
    --bg-surface-light: #252542;        /* Elevated surface */
    --bg-surface-lighter: #2d2d4a;      /* Hover state background */
    --bg-overlay: rgba(0, 0, 0, 0.7);   /* Overlay for modals/banner */
    
    /* -- Text Colors -- */
    --text-primary: #ffffff;            /* Primary text - white */
    --text-secondary: #a0a0b8;          /* Secondary text - muted */
    --text-tertiary: #6b6b80;           /* Tertiary text - very muted */
    --text-accent: #8b5cf6;             /* Accent text - purple */
    
    /* -- Border Colors -- */
    --border-color: #2d2d4a;            /* Default border */
    --border-light: #3d3d5c;            /* Light border */
    
    /* -- Status Colors -- */
    --color-success: #10b981;           /* Green for success states */
    --color-warning: #f59e0b;           /* Amber for warnings */
    --color-error: #ef4444;             /* Red for errors */
    
    /* -- Spacing Scale -- */
    --space-xs: 0.25rem;                /* 4px */
    --space-sm: 0.5rem;                 /* 8px */
    --space-md: 1rem;                   /* 16px */
    --space-lg: 1.5rem;                 /* 24px */
    --space-xl: 2rem;                   /* 32px */
    --space-2xl: 3rem;                  /* 48px */
    --space-3xl: 4rem;                  /* 64px */
    
    /* -- Typography -- */
    --font-family: 'Outfit', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-size-xs: 0.75rem;            /* 12px */
    --font-size-sm: 0.875rem;           /* 14px */
    --font-size-base: 1rem;             /* 16px */
    --font-size-lg: 1.125rem;           /* 18px */
    --font-size-xl: 1.25rem;            /* 20px */
    --font-size-2xl: 1.5rem;            /* 24px */
    --font-size-3xl: 2rem;              /* 32px */
    --font-size-4xl: 2.5rem;            /* 40px */
    
    /* -- Font Weights -- */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* -- Border Radius -- */
    --radius-sm: 0.375rem;              /* 6px */
    --radius-md: 0.5rem;                /* 8px */
    --radius-lg: 0.75rem;               /* 12px */
    --radius-xl: 1rem;                  /* 16px */
    --radius-2xl: 1.5rem;               /* 24px */
    --radius-full: 9999px;              /* Pill shape */
    
    /* -- Shadows -- */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.3);
    
    /* -- Transitions -- */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* -- Z-Index Scale -- */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-lock-screen: 500;
    
    /* -- Container Widths -- */
    --container-max: 1280px;
    --container-content: 900px;
}

/* ============================================================================
   2. RESET & BASE STYLES
   ============================================================================
   Normalize browser defaults and set up base styling.
*/
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-body);
    min-height: 100vh;
    overflow-x: hidden;
    /* Prevent horizontal scroll on mobile */
}

/* -- Focus States for Accessibility -- */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ============================================================================
   3. TYPOGRAPHY
   ============================================================================
   Heading styles, paragraph spacing, and text utilities.
*/
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--font-size-4xl);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: var(--font-size-3xl);
    color: var(--text-primary);
    position: relative;
    padding-bottom: var(--space-sm);
}

/* Decorative underline for h2 */
h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

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

/* -- Links -- */
a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

/* ============================================================================
   4. LAYOUT COMPONENTS
   ============================================================================
   Container, sections, and grid utilities.
*/
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

/* ============================================================================
   5. HEADER & NAVIGATION
   ============================================================================
   Sticky header with logo and navigation elements.
*/
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: linear-gradient(180deg, var(--bg-surface) 0%, rgba(26, 26, 46, 0.95) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-md) 0;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.header__logo {
    display: flex;
    align-items: center;
}

.header__logo img {
    height: 40px;
    width: auto;
}

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

.nav__link {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav__link:hover {
    color: var(--text-primary);
    background-color: var(--bg-surface-light);
    text-decoration: none;
}


/* ============================================================================
   6. HERO BANNER SECTION
   ============================================================================
   Full-width banner with background image and CTA overlay.
*/
.hero {
    position: relative;
    width: 100%;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: visible;
}

/* Banner background image - covers hero section */
.hero__background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    z-index: 1;
}

/* Mobile: banner displays at natural size, CTA below */
@media (max-width: 768px) {
    .hero {
        min-height: auto;
        flex-direction: column;
    }
    
    .hero__background {
        position: relative;
        width: 100%;
        height: auto;
        object-fit: contain;
    }
}

/* Gradient overlay for better text readability */
.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(15, 15, 26, 0.8) 0%,
        rgba(139, 92, 246, 0.3) 50%,
        rgba(15, 15, 26, 0.8) 100%
    );
    z-index: 2;
}

/* CTA content container - semi-transparent block */
.hero__content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: var(--space-2xl);
    background: rgba(26, 26, 46, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(139, 92, 246, 0.3);
    max-width: 600px;
    margin: var(--space-xl);
    box-shadow: var(--shadow-glow);
}

.hero__title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, #fff 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* ============================================================================
   7. BREADCRUMBS
   ============================================================================
   Navigation breadcrumb trail for SEO and UX.
*/
.breadcrumbs {
    padding: var(--space-sm) 0;
    background-color: transparent;
    border-bottom: none;
}

.breadcrumbs__list {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    list-style: none;
    flex-wrap: wrap;
}

.breadcrumbs__item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-xs);
}

.breadcrumbs__item:not(:last-child)::after {
    content: '/';
    color: var(--text-tertiary);
    font-size: 0.65rem;
    opacity: 0.6;
}

.breadcrumbs__link {
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

.breadcrumbs__link:hover {
    color: var(--color-primary-light);
    text-decoration: none;
}

.breadcrumbs__current {
    color: var(--text-secondary);
    font-weight: var(--font-weight-normal);
}

/* ============================================================================
   CONTENT BREAK BANNER
   ============================================================================
   Full-width promotional banner to break up content sections.
*/
.content-banner {
    position: relative;
    width: 100%;
    margin: var(--space-2xl) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.content-banner__image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.content-banner__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-2xl);
    background: linear-gradient(90deg, rgba(15, 15, 26, 0.95) 0%, rgba(15, 15, 26, 0.7) 70%, transparent 100%);
}

.content-banner__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.content-banner__text {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    max-width: 300px;
}

.content-banner__btn {
    align-self: flex-start;
}

@media (max-width: 768px) {
    .content-banner__overlay {
        width: 100%;
        padding: var(--space-lg);
        background: linear-gradient(0deg, rgba(15, 15, 26, 0.95) 0%, rgba(15, 15, 26, 0.8) 60%, transparent 100%);
        justify-content: flex-end;
    }
    
    .content-banner__title {
        font-size: var(--font-size-xl);
    }
    
    .content-banner__text {
        font-size: var(--font-size-sm);
        margin-bottom: var(--space-md);
    }
}

/* ============================================================================
   8. SLOTS GRID SECTION
   ============================================================================
   Grid of popular slot game images - 6 per row, rounded corners.
*/
.slots {
    padding: var(--space-3xl) 0;
    background-color: var(--bg-surface);
}

.slots__title {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.slots__grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-md);
}

.slots__item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 1 / 1;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.slots__item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.slots__item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.5) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.slots__item:hover::after {
    opacity: 1;
}

.slots__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.slots__link {
    display: block;
    height: 100%;
}

/* ============================================================================
   9. CONTENT SECTION
   ============================================================================
   Main content area with article text, optimized for readability.
*/
.content {
    padding: var(--space-3xl) 0;
    background-color: var(--bg-body);
}

.content__inner {
    max-width: var(--container-content);
    margin: 0 auto;
}

.content h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-xl);
}

.content h2 {
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-lg);
}

.content h3 {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.content p {
    margin-bottom: var(--space-lg);
    line-height: 1.8;
}

/* ============================================================================
   10. TABLES (RESPONSIVE)
   ============================================================================
   Styled tables that adapt to mobile screens.
*/
.table-wrapper {
    width: 100%;
    overflow-x: auto;
    margin: var(--space-xl) 0;
    border-radius: var(--radius-lg);
    background-color: var(--bg-surface);
    /* Ensure smooth scrolling on mobile */
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    min-width: 500px; /* Ensures readability on mobile */
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.table thead {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

.table th {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    white-space: nowrap;
}

.table td {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.table tbody tr {
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background-color: var(--bg-surface-light);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* -- Mobile Card Layout for Tables -- */
@media (max-width: 640px) {
    .table-wrapper {
        background: transparent;
    }
    
    .table--responsive {
        min-width: auto;
    }
    
    .table--responsive thead {
        display: none;
    }
    
    .table--responsive tbody {
        display: flex;
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .table--responsive tr {
        display: flex;
        flex-direction: column;
        background-color: var(--bg-surface);
        border-radius: var(--radius-lg);
        padding: var(--space-md);
        border: 1px solid var(--border-color);
    }
    
    .table--responsive td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--space-sm) 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .table--responsive td:last-child {
        border-bottom: none;
    }
    
    .table--responsive td::before {
        content: attr(data-label);
        font-weight: var(--font-weight-semibold);
        color: var(--color-primary-light);
        margin-right: var(--space-md);
    }
}

/* ============================================================================
   11. LISTS & ORDERED LISTS
   ============================================================================
   Styled lists for content sections.
*/
.content ul,
.content ol {
    margin: var(--space-lg) 0;
    padding-left: var(--space-xl);
}

.content ul {
    list-style: none;
}

.content ul li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

/* Custom bullet point */
.content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
}

.content ol {
    list-style: none;
    counter-reset: step-counter;
}

.content ol li {
    position: relative;
    padding-left: var(--space-xl);
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
    counter-increment: step-counter;
}

/* Custom numbered list */
.content ol li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================================================
   12. CALL-TO-ACTION BUTTONS
   ============================================================================
   Primary and secondary button styles.
*/
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

/* Primary button - gradient */
.btn--primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5);
    text-decoration: none;
}

/* Secondary button - gold */
.btn--secondary {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
    color: var(--bg-body);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

.btn--secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
    text-decoration: none;
}

/* Outline button */
.btn--outline {
    background: transparent;
    color: var(--color-primary-light);
    border: 2px solid var(--color-primary);
}

.btn--outline:hover {
    background-color: var(--color-primary);
    color: var(--text-primary);
    text-decoration: none;
}

/* Large button variant */
.btn--lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
}

/* Button group */
.btn-group {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
    margin: var(--space-xl) 0;
}

/* ============================================================================
   13. FOOTER & PAYMENT ICONS
   ============================================================================
   Site footer with payment provider logos.
*/
.footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: var(--space-2xl) 0;
}

.footer__inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

/* Payment methods section */
.footer__payments {
    text-align: center;
}

.footer__payments-title {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-lg);
}

.footer__payments-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background-color: var(--bg-surface-light);
    border-radius: var(--radius-lg);
}

.footer__payment-icon {
    height: 32px;
    width: auto;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
    filter: grayscale(30%);
}

.footer__payment-icon:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* Footer bottom section */
.footer__bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer__logo img {
    height: 36px;
    width: auto;
}

.footer__copyright {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.footer__disclaimer {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    max-width: 800px;
    line-height: 1.6;
}

/* ============================================================================
   14. MOBILE LOCK SCREEN OVERLAY
   ============================================================================
   Prevents scrolling and shows orientation message on mobile if needed.
   The lock screen functionality is controlled via JavaScript.
*/
.lock-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-body) 0%, var(--bg-surface) 100%);
    z-index: var(--z-lock-screen);
    display: none; /* Hidden by default, shown via JS */
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: var(--space-xl);
    text-align: center;
}

.lock-screen.is-active {
    display: flex;
}

.lock-screen__icon {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
}

.lock-screen__message {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 300px;
}

/* Lock body scroll when lock screen is active */
body.is-locked {
    overflow: hidden;
    touch-action: none;
}

/* ============================================================================
   15. RESPONSIVE BREAKPOINTS
   ============================================================================
   Mobile-first responsive design with breakpoints.
*/

/* -- Tablets and below (max-width: 1024px) -- */
@media (max-width: 1024px) {
    .slots__grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-sm);
    }
    
    .hero {
        min-height: 350px;
    }
    
    .hero__content {
        padding: var(--space-xl);
        margin: var(--space-md);
    }
}

/* -- Mobile landscape and below (max-width: 768px) -- */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.25rem;
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .section {
        padding: var(--space-2xl) 0;
    }
    
    .nav {
        display: none; /* Hide nav on mobile, can be replaced with hamburger menu */
    }
    
    .hero {
        min-height: 300px;
    }
    
    .hero__content {
        padding: var(--space-lg);
        max-width: 90%;
    }
    
    .hero__title {
        font-size: var(--font-size-2xl);
    }
    
    .slots__grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .btn-group {
        flex-direction: column;
        width: 100%;
    }
}

/* -- Mobile portrait (max-width: 480px) -- */
@media (max-width: 480px) {
    :root {
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.125rem;
    }
    
    .header__logo img {
        height: 32px;
    }
    
    .hero__content {
        padding: var(--space-md);
        margin: var(--space-sm);
    }
    
    .hero__subtitle {
        font-size: var(--font-size-base);
    }
    
    .slots {
        padding: var(--space-xl) 0;
    }
    
    .slots__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }
    
    .content {
        padding: var(--space-xl) 0;
    }
    
    .footer__payment-icon {
        height: 24px;
    }
    
    .breadcrumbs__list {
        font-size: var(--font-size-xs);
    }
}

/* ============================================================================
   16. UTILITY CLASSES
   ============================================================================
   Helper classes for common styling needs.
*/
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--color-primary-light); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.sr-only {
    /* Screen reader only - hidden visually but accessible */
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================================================
   17. ANIMATIONS & TRANSITIONS
   ============================================================================
   CSS animations for enhanced UX.
*/
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Staggered animation for grid items */
.slots__item:nth-child(1) { animation-delay: 0.05s; }
.slots__item:nth-child(2) { animation-delay: 0.1s; }
.slots__item:nth-child(3) { animation-delay: 0.15s; }
.slots__item:nth-child(4) { animation-delay: 0.2s; }
.slots__item:nth-child(5) { animation-delay: 0.25s; }
.slots__item:nth-child(6) { animation-delay: 0.3s; }
.slots__item:nth-child(7) { animation-delay: 0.35s; }
.slots__item:nth-child(8) { animation-delay: 0.4s; }
.slots__item:nth-child(9) { animation-delay: 0.45s; }
.slots__item:nth-child(10) { animation-delay: 0.5s; }
.slots__item:nth-child(11) { animation-delay: 0.55s; }
.slots__item:nth-child(12) { animation-delay: 0.6s; }