/**
 * 7Spin Music - Main Stylesheet
 * CSS Class Prefix: ui31-
 * Version: 1.0.0
 */

/* CSS Variables - Design System */
:root {
    --ui31-primary: #34495E;
    --ui31-secondary: #D3D3D3;
    --ui31-background: #0D1117;
    --ui31-text: #D3D3D3;
    --ui31-text-light: #FFFFFF;
    --ui31-accent: #E74C3C;
    --ui31-gold: #F1C40F;
    --ui31-success: #27AE60;
    --ui31-border: #2C3E50;
    --ui31-shadow: rgba(0, 0, 0, 0.5);
    --ui31-transition: all 0.3s ease;
}

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

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--ui31-background);
    color: var(--ui31-text);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

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

ul {
    list-style: none;
}

/* Mobile-First Container */
.ui31-container {
    max-width: 430px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

@media (min-width: 769px) {
    .ui31-container {
        max-width: 1200px;
        padding: 0 2rem;
    }
}

/* Header - Fixed Top Navigation */
.ui31-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, var(--ui31-primary) 0%, var(--ui31-background) 100%);
    box-shadow: 0 2px 10px var(--ui31-shadow);
}

.ui31-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.ui31-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ui31-logo img {
    width: 32px;
    height: 32px;
}

.ui31-logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--ui31-text-light);
    letter-spacing: 0.5px;
}

@media (max-width: 768px) {
    .ui31-logo-text {
        font-size: 1.6rem;
    }
}

.ui31-nav-buttons {
    display: flex;
    gap: 1rem;
}

.ui31-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.6rem;
    font-size: 1.4rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--ui31-transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ui31-btn-primary {
    background: linear-gradient(135deg, var(--ui31-accent) 0%, #C0392B 100%);
    color: var(--ui31-text-light);
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.ui31-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

.ui31-btn-secondary {
    background: transparent;
    color: var(--ui31-text-light);
    border: 2px solid var(--ui31-text-light);
}

.ui31-btn-secondary:hover {
    background: var(--ui31-text-light);
    color: var(--ui31-primary);
}

.ui31-btn-cta {
    background: linear-gradient(135deg, var(--ui31-gold) 0%, #D4AC0D 100%);
    color: var(--ui31-background);
    padding: 1rem 2rem;
    font-size: 1.6rem;
    box-shadow: 0 4px 15px rgba(241, 196, 15, 0.3);
}

.ui31-btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(241, 196, 15, 0.4);
}

/* Mobile Menu Toggle */
.ui31-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--ui31-text-light);
    font-size: 2.4rem;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .ui31-menu-toggle {
        display: block;
    }

    .ui31-nav-buttons {
        display: none;
    }
}

/* Mobile Menu Overlay */
.ui31-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--ui31-transition);
}

.ui31-menu-overlay.ui31-overlay-active {
    opacity: 1;
    visibility: visible;
}

/* Mobile Menu */
.ui31-mobile-menu {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100%;
    background: var(--ui31-background);
    z-index: 9999;
    transition: var(--ui31-transition);
    overflow-y: auto;
    box-shadow: -5px 0 20px var(--ui31-shadow);
}

.ui31-mobile-menu.ui31-menu-active {
    right: 0;
}

.ui31-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--ui31-primary);
    border-bottom: 1px solid var(--ui31-border);
}

.ui31-menu-close {
    background: none;
    border: none;
    color: var(--ui31-text-light);
    font-size: 2.4rem;
    cursor: pointer;
}

.ui31-menu-list {
    padding: 1rem 0;
}

.ui31-menu-item {
    border-bottom: 1px solid var(--ui31-border);
}

.ui31-menu-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem 1.5rem;
    color: var(--ui31-text);
    font-size: 1.5rem;
    transition: var(--ui31-transition);
}

.ui31-menu-link:hover {
    background: var(--ui31-primary);
    color: var(--ui31-text-light);
}

.ui31-menu-link i {
    width: 24px;
    text-align: center;
}

/* Main Content Wrapper */
.ui31-main-content {
    padding-top: 70px;
    padding-bottom: 80px;
    min-height: 100vh;
}

@media (min-width: 769px) {
    .ui31-main-content {
        padding-bottom: 0;
    }
}

/* Hero Section */
.ui31-hero {
    position: relative;
    padding: 2rem 0;
    overflow: hidden;
}

.ui31-hero-slider {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.ui31-hero-slider::-webkit-scrollbar {
    display: none;
}

.ui31-hero-slide {
    flex: 0 0 85%;
    scroll-snap-align: start;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 4px 20px var(--ui31-shadow);
}

.ui31-hero-slide img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

/* Section Styling */
.ui31-section {
    padding: 3rem 0;
}

.ui31-section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--ui31-text-light);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ui31-section-title i {
    color: var(--ui31-gold);
}

/* Game Grid */
.ui31-game-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (min-width: 769px) {
    .ui31-game-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 1.5rem;
    }
}

.ui31-game-card {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    transition: var(--ui31-transition);
    background: var(--ui31-primary);
}

.ui31-game-card:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(241, 196, 15, 0.2);
}

.ui31-game-card img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.ui31-game-name {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.8rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    color: var(--ui31-text-light);
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    opacity: 0;
    transition: var(--ui31-transition);
}

.ui31-game-card:hover .ui31-game-name {
    opacity: 1;
}

/* Category Tabs */
.ui31-category-tabs {
    display: flex;
    gap: 0.8rem;
    overflow-x: auto;
    padding: 1rem 0;
    scrollbar-width: none;
}

.ui31-category-tabs::-webkit-scrollbar {
    display: none;
}

.ui31-tab {
    flex: 0 0 auto;
    padding: 0.8rem 1.6rem;
    background: var(--ui31-primary);
    color: var(--ui31-text);
    border: 2px solid var(--ui31-border);
    border-radius: 20px;
    font-size: 1.3rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--ui31-transition);
    white-space: nowrap;
}

.ui31-tab:hover,
.ui31-tab.ui31-tab-active {
    background: var(--ui31-gold);
    color: var(--ui31-background);
    border-color: var(--ui31-gold);
}

/* Info Cards */
.ui31-info-card {
    background: var(--ui31-primary);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--ui31-border);
}

.ui31-info-card-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--ui31-gold);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.ui31-info-card-content {
    font-size: 1.4rem;
    line-height: 1.8;
    color: var(--ui31-text);
}

/* Stats Grid */
.ui31-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.ui31-stat-item {
    background: var(--ui31-background);
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
}

.ui31-stat-value {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--ui31-gold);
}

.ui31-stat-label {
    font-size: 1.2rem;
    color: var(--ui31-text);
    margin-top: 0.5rem;
}

/* Footer */
.ui31-footer {
    background: var(--ui31-primary);
    padding: 3rem 0;
    margin-top: 3rem;
    border-top: 1px solid var(--ui31-border);
}

.ui31-footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.ui31-footer-logo img {
    width: 40px;
    height: 40px;
}

.ui31-footer-logo span {
    font-size: 2rem;
    font-weight: 700;
    color: var(--ui31-text-light);
}

.ui31-footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.ui31-footer-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    background: var(--ui31-background);
    border-radius: 10px;
    color: var(--ui31-text);
    font-size: 1.2rem;
    transition: var(--ui31-transition);
}

.ui31-footer-link:hover {
    background: var(--ui31-gold);
    color: var(--ui31-background);
}

.ui31-footer-link i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.ui31-footer-text {
    text-align: center;
    font-size: 1.2rem;
    color: var(--ui31-text);
    margin-bottom: 1rem;
}

.ui31-copyright {
    text-align: center;
    font-size: 1.1rem;
    color: var(--ui31-text);
    opacity: 0.8;
}

/* Mobile Bottom Navigation - Fixed at Bottom */
.ui31-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, var(--ui31-primary) 0%, var(--ui31-background) 100%);
    box-shadow: 0 -4px 20px var(--ui31-shadow);
    display: none;
}

@media (max-width: 768px) {
    .ui31-bottom-nav {
        display: flex;
    }
}

.ui31-bottom-nav-inner {
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    padding: 0.8rem 0;
    max-width: 430px;
    margin: 0 auto;
}

.ui31-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    min-height: 60px;
    color: var(--ui31-text);
    cursor: pointer;
    transition: var(--ui31-transition);
    padding: 0.5rem;
}

.ui31-nav-item:hover,
.ui31-nav-item.ui31-nav-active {
    color: var(--ui31-gold);
}

.ui31-nav-item i {
    font-size: 22px;
    margin-bottom: 0.3rem;
}

.ui31-nav-item span {
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
}

/* Toast Notifications */
.ui31-toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: var(--ui31-primary);
    color: var(--ui31-text-light);
    padding: 1.2rem 2rem;
    border-radius: 10px;
    font-size: 1.4rem;
    box-shadow: 0 4px 20px var(--ui31-shadow);
    opacity: 0;
    transition: var(--ui31-transition);
    z-index: 9999;
}

.ui31-toast.ui31-toast-show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.ui31-toast-success {
    background: var(--ui31-success);
}

.ui31-toast-error {
    background: var(--ui31-accent);
}

/* Internal Link Styling */
.ui31-internal-link {
    color: var(--ui31-gold);
    text-decoration: underline;
    transition: var(--ui31-transition);
}

.ui31-internal-link:hover {
    color: var(--ui31-text-light);
}

/* CTA Section */
.ui31-cta-section {
    background: linear-gradient(135deg, var(--ui31-primary) 0%, var(--ui31-background) 100%);
    border-radius: 15px;
    padding: 2.5rem;
    text-align: center;
    margin: 2rem 0;
    border: 2px solid var(--ui31-gold);
}

.ui31-cta-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--ui31-text-light);
    margin-bottom: 1rem;
}

.ui31-cta-text {
    font-size: 1.4rem;
    color: var(--ui31-text);
    margin-bottom: 1.5rem;
}

/* Feature List */
.ui31-feature-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
}

.ui31-feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--ui31-background);
    border-radius: 10px;
}

.ui31-feature-item i {
    color: var(--ui31-gold);
    font-size: 1.8rem;
    width: 24px;
}

.ui31-feature-item span {
    font-size: 1.4rem;
    color: var(--ui31-text);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .ui31-section-title {
        font-size: 1.8rem;
    }

    .ui31-info-card {
        padding: 1.5rem;
    }

    .ui31-game-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}