/* ===== Custom Properties ===== */
:root {
    --color-bg: #0f0f1a;
    --color-surface: #1a1a2e;
    --color-surface-alt: #222240;
    --color-accent: #00d4ff;
    --color-accent-hover: #00b8e6;
    --color-text: #e0e0e0;
    --color-text-muted: #8888a0;
    --color-heading: #ffffff;
    --color-border: #2a2a4a;
    --color-success: #00c853;
    --color-error: #ff3d3d;
    --color-warning: #ffab00;
    --color-rating: #ffd700;
    --font-heading: 'Bebas Neue', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --max-width: 1200px;
    --header-height: 64px;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md);
}

main > section {
    margin-bottom: var(--space-2xl);
}

main > section:last-child {
    margin-bottom: 0;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s;
}

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

a:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--color-heading);
    letter-spacing: 0.04em;
    line-height: 1.2;
}

h1 { font-size: 2rem; margin-bottom: 1rem; }
h2 { font-size: 1.6rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.3rem; margin-bottom: 0.5rem; }

/* ===== Skip Link ===== */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 200;
    background-color: var(--color-accent);
    color: var(--color-bg);
    padding: 0.5rem 1.2rem;
    font-weight: 700;
    border-radius: 0 0 var(--radius) var(--radius);
}

.skip-link:focus {
    left: 1rem;
    outline: 2px solid var(--color-heading);
}

/* ===== Header ===== */
.site-header {
    background-color: var(--color-surface);
    border-bottom: 2px solid var(--color-accent);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    min-height: var(--header-height);
    gap: var(--space-sm);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.logo:hover {
    color: var(--color-heading);
}

/* ===== Mobile Nav Toggle ===== */
#nav-toggle {
    position: absolute;
    left: -9999px;
}

.nav-toggle-label {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    cursor: pointer;
    padding: 2px 0;
}

.nav-toggle-label span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

#nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

#nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) {
    opacity: 0;
}

#nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

#nav-toggle:focus-visible ~ .nav-toggle-label {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

.nav-list {
    list-style: none;
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 0.5rem 0;
    gap: 0.15rem;
}

#nav-toggle:checked ~ nav {
    flex: 1 1 100%;
}

#nav-toggle:checked ~ nav .nav-list {
    display: flex;
}

.nav-list a {
    display: block;
    padding: 0.6rem 0.7rem;
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius);
    transition: background-color 0.2s, color 0.2s;
}

.nav-list a:hover,
.nav-list a:focus {
    background-color: var(--color-surface-alt);
    color: var(--color-accent);
}

/* ===== Footer ===== */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: auto;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.6rem 1.4rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    text-align: center;
    transition: background-color 0.2s, transform 0.1s;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-bg);
}

.btn-secondary {
    background-color: var(--color-surface-alt);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-border);
    color: var(--color-heading);
}

.btn-danger {
    background-color: var(--color-error);
    color: #fff;
}

.btn-danger:hover {
    background-color: #cc0000;
}

.btn-small {
    padding: 0.35rem 0.8rem;
    font-size: 0.8rem;
}

.btn-block {
    display: block;
    width: 100%;
}

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

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: 500;
    color: var(--color-heading);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    background-color: var(--color-surface-alt);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

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

.form-group .error {
    display: block;
    color: var(--color-error);
    font-size: 0.82rem;
    margin-top: 0.3rem;
}

.form-inline {
    display: flex;
    gap: var(--space-md);
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-inline .form-group {
    margin-bottom: 0;
}

.form-inline.mb-1-5 {
    margin-bottom: var(--space-lg);
}

/* ===== Cards ===== */
.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.card-cover {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    background-color: var(--color-surface-alt);
}

.card-body {
    padding: var(--space-lg);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.card-body h3 {
    font-size: 1.15rem;
    margin: 0;
    line-height: 1.3;
    flex: 1 1 100%;
}

.card-body h3 a {
    color: var(--color-heading);
}

.card-body h3 a:hover {
    color: var(--color-accent);
}

.card-meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin: 0;
    flex: 1 1 auto;
}

.card-body .rating-badge {
    flex: 0 0 auto;
}

/* ===== Game Grid ===== */
.game-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

/* ===== Rating Badge ===== */
.rating-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 50%;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-bg);
    background-color: var(--color-rating);
    flex-shrink: 0;
}

.rating-badge.rating-high {
    background-color: var(--color-success);
}

.rating-badge.rating-mid {
    background-color: var(--color-warning);
}

.rating-badge.rating-low {
    background-color: var(--color-error);
}

/* ===== Review Article ===== */
.review-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.review-card:last-child {
    margin-bottom: 0;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.review-author {
    font-weight: 700;
    color: var(--color-heading);
}

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

.review-text {
    line-height: 1.7;
    margin: 0 0 var(--space-md);
}

.review-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

/* ===== Game Detail ===== */
.game-detail {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.game-detail > div:first-child {
    flex-shrink: 0;
}

.game-detail-cover {
    width: 100%;
    max-width: 300px;
    border-radius: var(--radius-lg);
}

.game-info {
    flex: 1;
    min-width: 0;
}

.game-info h1 {
    font-size: 2.2rem;
    margin-bottom: var(--space-md);
}

.game-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin: 0 0 var(--space-lg);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.game-meta span {
    background-color: var(--color-surface-alt);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius);
}

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

.game-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

/* ===== Section Headings ===== */
.section-title {
    font-size: 1.8rem;
    margin: 0 0 var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}

/* ===== Alerts / Messages ===== */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius);
    margin-bottom: var(--space-lg);
    font-size: 0.95rem;
}

.alert-success {
    background-color: rgba(0, 200, 83, 0.12);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.alert-error {
    background-color: rgba(255, 61, 61, 0.12);
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

/* ===== Utility Classes ===== */
.mt-1 { margin-top: var(--space-md); }
.mb-1 { margin-bottom: var(--space-md); }
.mb-1-5 { margin-bottom: var(--space-lg); }
.flex-grow { flex: 1; }
.no-margin { margin: 0; }

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

.text-muted-mt.no-margin {
    margin: 0;
}

.auth-link {
    text-align: center;
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
}

.form-inline-action {
    display: inline;
}

.action-bar {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cover-preview {
    max-width: 150px;
    border-radius: var(--radius);
}

/* ===== Auth Form Container ===== */
.auth-container {
    max-width: 440px;
    margin: var(--space-xl) auto;
}

.auth-container--wide {
    max-width: 600px;
    margin: var(--space-xl) auto;
}

.auth-container h1 {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.auth-form {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.auth-form .btn-block {
    margin-top: var(--space-sm);
}

.auth-link {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
}

/* ===== Search Bar ===== */
.search-form {
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.search-form .form-group {
    min-width: 0;
}

.search-form + h2 {
    margin-top: var(--space-lg);
    margin-bottom: var(--space-md);
}

/* ===== Profile ===== */
.profile-header {
    margin-bottom: var(--space-xl);
}

.profile-header + h2 {
    margin-top: var(--space-lg);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    color: var(--color-text-muted);
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
}

.empty-state p:last-child {
    margin-bottom: 0;
}

.empty-state .btn {
    margin-top: var(--space-sm);
}

/* ===== Cover Placeholder ===== */
.cover-placeholder {
    width: 100%;
    aspect-ratio: 3 / 4;
    background: linear-gradient(135deg, var(--color-surface-alt), var(--color-border));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* ===== Dashboard Stats ===== */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--color-accent);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* ===== Tables ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th,
.data-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    background-color: var(--color-surface-alt);
    color: var(--color-heading);
    font-weight: 700;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table tr:hover td {
    background-color: rgba(0, 212, 255, 0.04);
}

/* ===== Table wrapper for horizontal scroll on mobile ===== */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ===== Tablet (≥600px) ===== */
@media (min-width: 600px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.9rem; }

    main {
        padding: var(--space-xl) var(--space-lg);
    }

    .nav-toggle-label {
        display: none;
    }

    .nav-list {
        display: flex;
        flex-direction: row;
        width: auto;
        padding: 0;
        gap: var(--space-xs);
    }

    .nav-list a {
        font-size: 0.9rem;
        padding: var(--space-sm) var(--space-md);
    }

    .header-inner {
        flex-wrap: nowrap;
    }

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

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

    .game-detail {
        flex-direction: row;
        align-items: flex-start;
        gap: var(--space-2xl);
    }

    .game-detail-cover {
        width: 280px;
        flex-shrink: 0;
    }
}

/* ===== Desktop (≥900px) ===== */
@media (min-width: 900px) {
    h1 { font-size: 3rem; }

    main {
        padding: var(--space-2xl) var(--space-xl);
    }

    .game-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-xl);
    }

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

    .nav-list {
        gap: var(--space-sm);
    }

    .nav-list a {
        padding: var(--space-sm) var(--space-md);
    }
}

/* ===== Touch / Hover Guard ===== */
@media (hover: none) {
    .card:hover {
        transform: none;
        box-shadow: var(--shadow);
    }

    .btn:hover {
        transform: none;
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .card:hover {
        transform: none;
    }

    .btn:hover {
        transform: none;
    }
}