/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    /* Colors */
    --primary: #FF1493;
    --primary-dark: #D4106A;
    --secondary: #FF69B4;
    --accent: #FFD700;
    --background: #1a1a1a;
    --surface: #2a2a2a;
    --surface-light: #3a3a3a;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --success: #4CAF50;
    --error: #f44336;
    --overlay: rgba(0, 0, 0, 0.85);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 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-glow: 0 0 20px rgba(255, 20, 147, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    min-height: -webkit-fill-available;
}

html {
    height: -webkit-fill-available;
}

/* ===== UTILITY CLASSES ===== */
.hidden {
    display: none !important;
}

.active {
    display: block;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ===== LOADING ===== */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--overlay);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading.active {
    display: flex;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--surface-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===== MODALS ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--overlay);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: var(--spacing-md);
    animation: fadeIn var(--transition-normal);
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp var(--transition-normal);
    position: relative;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close-modal {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--surface-light);
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
}

.close-modal:active {
    transform: scale(0.95);
    background: var(--primary);
}

/* ===== AGE VERIFICATION ===== */
.age-verification {
    text-align: center;
}

.age-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.age-verification h2 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.age-verification p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.age-question {
    font-size: 1.2rem;
    color: var(--text-primary) !important;
    font-weight: 600;
    margin: var(--spacing-md) 0 !important;
}

.age-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
}

.age-buttons button {
    flex: 1;
}

.age-disclaimer {
    font-size: 0.85rem;
    color: var(--text-secondary) !important;
    margin-top: var(--spacing-md) !important;
}

.under-age {
    text-align: center;
}

.under-age .age-icon {
    filter: grayscale(1);
}

/* ===== BUTTONS ===== */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    min-height: 48px;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:active {
    box-shadow: var(--shadow-glow);
}

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

.btn-block {
    width: 100%;
}

.icon-btn {
    background: var(--surface-light);
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:active {
    transform: scale(0.95);
    background: var(--primary);
}

/* ===== SCREENS ===== */
.screen {
    display: none;
    min-height: 100vh;
    min-height: -webkit-fill-available;
}

.screen.active {
    display: block;
}

/* ===== AUTH SCREEN ===== */
#auth-screen {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.logo-container {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo {
    font-size: 3rem;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-form {
    display: none;
    background: var(--surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.auth-form.active {
    display: block;
    animation: slideUp var(--transition-normal);
}

.auth-form h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--primary);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--surface-light);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group small {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
}

.form-group.checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
}

.form-group.checkbox input {
    width: auto;
    margin-top: 4px;
}

.form-group.checkbox label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.form-group.checkbox a {
    color: var(--primary);
    text-decoration: none;
}

.form-switch {
    text-align: center;
    margin-top: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-switch a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* ===== APP HEADER ===== */
.app-header {
    background: var(--surface);
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-logo {
    font-size: 1.5rem;
    font-weight: 700;
}

/* ===== NOTIFICATIONS BANNER ===== */
.notifications-banner {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: var(--spacing-sm) var(--spacing-md);
    color: white;
    display: none;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    animation: slideDown var(--transition-normal);
}

.notifications-banner.active {
    display: flex;
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

.notification-content {
    flex: 1;
}

.notification-content h4 {
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.notification-content p {
    font-size: 0.85rem;
    opacity: 0.9;
}

/* ===== VIEWS ===== */
.view {
    display: none;
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-xl);
}

.view.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

/* ===== HOME VIEW ===== */
.welcome-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.welcome-title {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ===== GAMES GRID ===== */
.games-grid {
    display: grid;
    gap: var(--spacing-md);
}

.game-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
}

.game-card:active {
    transform: scale(0.98);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.game-card-icon {
    font-size: 3rem;
    min-width: 70px;
    text-align: center;
}

.game-card-content {
    flex: 1;
}

.game-card-content h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.game-card-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.game-card-arrow {
    font-size: 1.5rem;
    color: var(--primary);
}

/* ===== SIDE MENU ===== */
.side-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    height: -webkit-fill-available;
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    transition: right var(--transition-normal);
    overflow-y: auto;
}

.side-menu.active {
    right: 0;
}

.menu-header {
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--surface-light);
}

.menu-header h3 {
    font-size: 1.3rem;
}

.menu-nav {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.menu-nav a {
    color: var(--text-primary);
    text-decoration: none;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.menu-nav a:active {
    background: var(--surface-light);
}

/* ===== LEGAL CONTENT ===== */
.legal-content {
    max-height: 80vh;
}

.legal-text {
    color: var(--text-secondary);
    line-height: 1.8;
}

.legal-text h3 {
    color: var(--text-primary);
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
    font-size: 1.1rem;
}

.legal-text p {
    margin-bottom: var(--spacing-sm);
}

.legal-text ul {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-md);
}

.legal-text li {
    margin-bottom: var(--spacing-xs);
}

.legal-update {
    margin-top: var(--spacing-lg) !important;
    font-style: italic;
    font-size: 0.85rem;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 9998;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    pointer-events: none;
}

.toast {
    background: var(--surface);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideInUp 0.3s ease;
    pointer-events: auto;
}

@keyframes slideInUp {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--error);
}

.toast.info {
    border-left: 4px solid var(--primary);
}

/* ===== RESPONSIVE ===== */
@media (min-width: 768px) {
    .games-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-content {
        max-width: 600px;
    }
}

@media (min-width: 1024px) {
    .games-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ===== PWA SPECIFIC ===== */
@media (display-mode: standalone) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .app-header {
        padding-top: calc(var(--spacing-sm) + env(safe-area-inset-top));
    }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background);
}

::-webkit-scrollbar-thumb {
    background: var(--surface-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}