/* ============================================
   MINESWEEPER DUEL - Design System & Styles
   Premium, Modern, Esports-lite Aesthetic
   ============================================ */

/* === CSS Custom Properties (Design Tokens) === */
:root {
    /* Color Palette - Dark Theme with Accent */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a25;
    --color-bg-card: #16161f;
    --color-bg-card-hover: #1e1e2a;

    /* Accent Colors - Electric Blue/Cyan */
    --color-accent-primary: #00d4ff;
    --color-accent-secondary: #7b5cff;
    --color-accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7b5cff 100%);
    --color-accent-glow: rgba(0, 212, 255, 0.3);

    /* Status Colors */
    --color-success: #00e676;
    --color-warning: #ffab40;
    --color-danger: #ff5252;
    --color-info: #40c4ff;

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #b8b8c8;
    --color-text-muted: #6b6b80;
    --color-text-accent: var(--color-accent-primary);

    /* Border & Dividers */
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    --color-divider: rgba(255, 255, 255, 0.05);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Outfit', var(--font-primary);
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Font Sizes - Fluid Typography */
    --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.3vw, 0.95rem);
    --text-base: clamp(1rem, 0.9rem + 0.4vw, 1.1rem);
    --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.7vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.2rem + 1vw, 2rem);
    --text-3xl: clamp(2rem, 1.5rem + 2vw, 3rem);
    --text-4xl: clamp(2.5rem, 2rem + 2.5vw, 4rem);
    --text-5xl: clamp(3rem, 2.5rem + 3vw, 5rem);

    /* Font Weights */
    --weight-normal: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;
    --weight-extrabold: 800;

    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px var(--color-accent-glow);
    --shadow-glow-sm: 0 0 15px var(--color-accent-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Z-Index Scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-toast: 500;

    /* Container Widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1440px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 100%, rgba(123, 92, 255, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* === Typography === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: var(--weight-bold);
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 {
    font-size: var(--text-4xl);
}

h2 {
    font-size: var(--text-3xl);
}

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

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

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

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

a:hover {
    color: var(--color-text-primary);
}

/* === Focus Styles (Accessibility) === */
:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 3px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 3px;
}

/* === Layout Components === */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

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

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

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

.section {
    padding: var(--space-20) 0;
}

.section--hero {
    padding: var(--space-24) 0 var(--space-20);
    min-height: 85vh;
    display: flex;
    align-items: center;
}

/* === Navigation === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    padding: var(--space-4) 0;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.nav__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    color: var(--color-text-primary);
    text-decoration: none;
}

.nav__logo-icon {
    width: 36px;
    height: 36px;
    background: var(--color-accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    list-style: none;
}

.nav__link {
    padding: var(--space-2) var(--space-4);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav__cta {
    margin-left: var(--space-4);
}

/* Mobile Nav Toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    background: none;
    border: none;
    cursor: pointer;
}

.nav__toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    line-height: 1.4;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn--primary {
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
    box-shadow: var(--shadow-glow-sm);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn--secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn--secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--color-border-hover);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn--ghost:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
}

.btn--sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn--full {
    width: 100%;
}

/* === Cards === */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card--flat:hover {
    transform: none;
}

.card__icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-4);
}

.card__title {
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-2);
}

.card__text {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

/* === Form Elements === */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    color: var(--color-text-primary);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:hover {
    border-color: var(--color-border-hover);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-hint {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-2);
}

.form-error {
    font-size: var(--text-xs);
    color: var(--color-danger);
    margin-top: var(--space-2);
}

/* === Badges === */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge--primary {
    background: rgba(0, 212, 255, 0.15);
    color: var(--color-accent-primary);
}

.badge--success {
    background: rgba(0, 230, 118, 0.15);
    color: var(--color-success);
}

.badge--warning {
    background: rgba(255, 171, 64, 0.15);
    color: var(--color-warning);
}

.badge--rank {
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

/* === Stats Grid === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-4);
}

.stat-item {
    text-align: center;
    padding: var(--space-4);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.stat-value {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--weight-bold);
    color: var(--color-accent-primary);
}

.stat-label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: var(--space-1);
}

/* === FAQ Accordion === */
.accordion {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.accordion-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.accordion-item:hover {
    border-color: var(--color-border-hover);
}

.accordion-header {
    width: 100%;
    padding: var(--space-5) var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.accordion-header:hover {
    color: var(--color-accent-primary);
}

.accordion-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-text-muted);
    transition: transform var(--transition-base);
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
    color: var(--color-accent-primary);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.accordion-item.active .accordion-content {
    max-height: 500px;
}

.accordion-body {
    padding: 0 var(--space-6) var(--space-5);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.7;
}

/* === Hero Section === */
.hero {
    text-align: center;
}

.hero__badge {
    margin-bottom: var(--space-6);
}

.hero__title {
    font-size: var(--text-5xl);
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-6);
}

.hero__subtitle {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

.hero__actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-12);
}

.hero__visual {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

/* Game Board Preview */
.game-preview {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.game-preview::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--color-accent-glow), transparent 30%);
    animation: rotate-glow 8s linear infinite;
    opacity: 0.3;
}

@keyframes rotate-glow {
    100% {
        transform: rotate(360deg);
    }
}

.game-preview__inner {
    position: relative;
    z-index: 1;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.game-preview__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.player-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.player-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--weight-bold);
}

.player-name {
    font-weight: var(--weight-semibold);
    color: var(--color-text-primary);
}

.player-rank {
    font-size: var(--text-xs);
    color: var(--color-accent-primary);
}

.vs-badge {
    background: var(--color-bg-tertiary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-weight: var(--weight-bold);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* Mini Minesweeper Grid */
.mini-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 3px;
}

.mini-cell {
    aspect-ratio: 1;
    background: var(--color-bg-tertiary);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: var(--weight-bold);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.mini-cell--revealed {
    background: var(--color-bg-card);
}

.mini-cell--1 {
    color: #3b82f6;
}

.mini-cell--2 {
    color: #22c55e;
}

.mini-cell--3 {
    color: #ef4444;
}

.mini-cell--4 {
    color: #8b5cf6;
}

.mini-cell--mine {
    color: var(--color-danger);
}

.mini-cell--flag {
    color: var(--color-warning);
}

/* === Features Grid === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

/* === Section Headers === */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

.section-header__eyebrow {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--color-accent-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--space-3);
}

.section-header__title {
    margin-bottom: var(--space-4);
}

.section-header__text {
    color: var(--color-text-secondary);
    font-size: var(--text-lg);
}

/* === Play Section === */
.play-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--space-8);
    max-width: 900px;
    margin: 0 auto;
}

.play-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-base);
}

.play-card:hover {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
}

.play-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-5);
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.play-card__title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.play-card__text {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    margin-bottom: var(--space-6);
}

/* === Profile Section === */
.profile-container {
    max-width: 800px;
    margin: 0 auto;
}

.profile-header {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    padding: var(--space-8);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
}

.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    background: var(--color-accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: var(--weight-bold);
    flex-shrink: 0;
}

.profile-info {
    flex: 1;
}

.profile-name {
    font-size: var(--text-2xl);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-2);
}

.profile-rank-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

/* === Footer === */
.footer {
    padding: var(--space-12) 0 var(--space-8);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-20);
}

.footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    text-align: center;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: var(--weight-bold);
    color: var(--color-text-primary);
}

.footer__links {
    display: flex;
    gap: var(--space-6);
    list-style: none;
}

.footer__link {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-text-primary);
}

.footer__copy {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* === Loading States === */
.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-accent-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}

/* === Toast/Notifications === */
.toast {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    padding: var(--space-4) var(--space-6);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    z-index: var(--z-toast);
    transform: translateY(100px);
    opacity: 0;
    transition: all var(--transition-base);
}

.toast.visible {
    transform: translateY(0);
    opacity: 1;
}

/* === Responsive Styles === */
@media (max-width: 768px) {
    .nav__links {
        position: fixed;
        top: 65px;
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        flex-direction: column;
        padding: var(--space-4);
        border-bottom: 1px solid var(--color-border);
        gap: var(--space-2);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-base);
    }

    .nav__links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__cta {
        margin-left: 0;
        width: 100%;
    }

    .hero__title {
        font-size: var(--text-3xl);
    }

    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

    .hero__actions .btn {
        width: 100%;
        max-width: 280px;
    }

    .play-container {
        grid-template-columns: 1fr;
    }

    .profile-header {
        flex-direction: column;
        text-align: center;
    }

    .section {
        padding: var(--space-12) 0;
    }

    .section--hero {
        padding-top: var(--space-16);
        min-height: auto;
    }

    .game-preview {
        padding: var(--space-4);
    }

    .mini-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }

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

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

    .footer__links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* === Utility Classes === */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-gradient {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-8 {
    margin-top: var(--space-8);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.hidden {
    display: none;
}

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

/* View Transitions */
.view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* === Smooth scroll padding for fixed nav === */
html {
    scroll-padding-top: 80px;
}

/* ============================================
   MINESWEEPER GAME STYLES
   ============================================ */

/* Game Header */
.game-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.game-header__left,
.game-header__right {
    flex: 1;
}

.game-header__right {
    text-align: right;
}

.game-header__center {
    flex: 2;
    text-align: center;
}

.game-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
}

.game-status__icon {
    font-size: 1.2rem;
}

.game-status__text {
    font-weight: var(--weight-semibold);
    color: var(--color-text-primary);
}

/* Game Stats Bar */
.game-stats-bar {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-6);
    padding: var(--space-4);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.game-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    min-width: 80px;
}

.game-stat__icon {
    font-size: 1.5rem;
}

.game-stat__value {
    font-family: var(--font-mono);
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    color: var(--color-accent-primary);
}

.game-stat__label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.game-stat--timer .game-stat__value {
    color: var(--color-warning);
}

/* Game Board Container */
.game-board-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-6);
    overflow-x: auto;
    padding: var(--space-4);
}

/* Game Board */
.game-board {
    display: grid;
    gap: 2px;
    padding: var(--space-4);
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Minesweeper Cell */
.cell {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: var(--weight-bold);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-fast);
}

.cell:hover:not(.cell--revealed):not(.cell--flagged) {
    background: var(--color-bg-card-hover);
    border-color: var(--color-accent-primary);
    transform: scale(1.05);
}

.cell--revealed {
    background: var(--color-bg-secondary);
    border-color: transparent;
    cursor: default;
}

.cell--revealed:hover {
    transform: none;
}

.cell--flagged {
    background: rgba(255, 171, 64, 0.15);
    border-color: var(--color-warning);
}

.cell--mine {
    background: rgba(255, 82, 82, 0.2);
    border-color: var(--color-danger);
}

.cell--mine-exploded {
    background: var(--color-danger);
    animation: explode 0.3s ease;
}

@keyframes explode {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.3);
    }

    100% {
        transform: scale(1);
    }
}

/* Cell Number Colors */
.cell--1 {
    color: #3b82f6;
}

.cell--2 {
    color: #22c55e;
}

.cell--3 {
    color: #ef4444;
}

.cell--4 {
    color: #8b5cf6;
}

.cell--5 {
    color: #f97316;
}

.cell--6 {
    color: #06b6d4;
}

.cell--7 {
    color: #ec4899;
}

.cell--8 {
    color: #6b7280;
}

/* Game Controls */
.game-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.game-controls__info {
    display: flex;
    gap: var(--space-6);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* Game Over Modal */
.game-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    animation: fadeIn 0.3s ease;
}

.game-modal.hidden {
    display: none;
}

.game-modal__content {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    text-align: center;
    max-width: 400px;
    width: 90%;
    animation: slideUp 0.4s ease;
}

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

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

.game-modal__icon {
    font-size: 4rem;
    margin-bottom: var(--space-4);
}

.game-modal__title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-2);
}

.game-modal__text {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.game-modal__stats {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-6);
}

.game-modal__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* Victory/Defeat States */
.game-modal--victory .game-modal__title {
    color: var(--color-success);
}

.game-modal--defeat .game-modal__title {
    color: var(--color-danger);
}

/* Responsive Game Styles */
@media (max-width: 768px) {
    .game-header {
        flex-direction: column;
        gap: var(--space-3);
        text-align: center;
    }

    .game-header__left,
    .game-header__right {
        text-align: center;
    }

    .game-stats-bar {
        gap: var(--space-4);
        flex-wrap: wrap;
    }

    .game-stat {
        min-width: 70px;
    }

    .cell {
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
    }

    .game-controls__info {
        flex-direction: column;
        gap: var(--space-2);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .cell {
        width: 24px;
        height: 24px;
        font-size: 0.7rem;
    }

    .game-board {
        padding: var(--space-2);
    }
}