/* ====================================
   Telegram Premium Theme Colors
   ==================================== */

:root {
    /* Premium gradient colors */
    --premium-blue: #5B9DE2;
    --premium-purple: #8B5CF6;
    --premium-cyan: #06B6D4;
    --premium-pink: #EC4899;
    
    /* Telegram theme colors (will be overwritten by Telegram) */
    --tg-theme-bg-color: #17212B;
    --tg-theme-text-color: #FFFFFF;
    --tg-theme-hint-color: #708499;
    --tg-theme-link-color: #5B9DE2;
    --tg-theme-button-color: #5288C1;
    --tg-theme-button-text-color: #FFFFFF;
    --tg-theme-secondary-bg-color: #232E3C;
    
    /* Custom colors */
    --card-bg: rgba(35, 46, 60, 0.8);
    --card-border: rgba(91, 157, 226, 0.2);
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    --gold-color: #FFD700;
    
    /* Gradients */
    --premium-gradient: linear-gradient(135deg, var(--premium-blue), var(--premium-purple));
    --premium-gradient-2: linear-gradient(135deg, var(--premium-cyan), var(--premium-blue));
    --premium-gradient-3: linear-gradient(135deg, var(--premium-purple), var(--premium-pink));
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(91, 157, 226, 0.3);
}

/* ====================================
   Base Styles
   ==================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

.app-container {
    max-width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ====================================
   Header
   ==================================== */

.header {
    background: var(--premium-gradient);
    padding: var(--spacing-lg) var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.header::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.header-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.header-subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ====================================
   Stats Bar
   ==================================== */

.stats-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-md);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--premium-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--tg-theme-hint-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--card-border);
}

/* ====================================
   Filter Tabs
   ==================================== */

.filter-tabs {
    display: flex;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.filter-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    color: var(--tg-theme-hint-color);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-tab:active {
    transform: scale(0.98);
}

.filter-tab.active {
    background: var(--premium-gradient);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-glow);
}

/* ====================================
   Main Content
   ==================================== */

.main-content {
    flex: 1;
    padding-bottom: var(--spacing-xl);
}

/* ====================================
   Accounts List
   ==================================== */

.accounts-list {
    padding: 0 var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Account Card */
.account-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.account-card:active {
    transform: scale(0.98);
}

.account-card:hover {
    border-color: var(--premium-blue);
    box-shadow: var(--shadow-glow);
}

.account-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.account-phone {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--tg-theme-text-color);
}

.account-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.account-status.sold {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.account-status.band {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.account-card-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.account-info {
    display: flex;
    gap: var(--spacing-md);
}

.account-info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8125rem;
    color: var(--tg-theme-hint-color);
}

.account-price {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1rem;
    font-weight: 700;
    color: var(--gold-color);
}

/* ====================================
   Loading State
   ==================================== */

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--tg-theme-hint-color);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--card-border);
    border-top-color: var(--premium-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.empty-state-text {
    color: var(--tg-theme-hint-color);
    font-size: 0.9375rem;
}

/* ====================================
   Load More Button
   ==================================== */

.load-more-container {
    padding: var(--spacing-md);
}

.load-more-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    color: var(--tg-theme-link-color);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.load-more-btn:active {
    transform: scale(0.98);
    background: var(--premium-gradient);
    color: white;
    border-color: transparent;
}

/* ====================================
   Modal
   ==================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--tg-theme-bg-color);
    z-index: 100;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.modal.active {
    transform: translateX(0);
}

.modal-content {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--premium-gradient);
}

.modal-back-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.modal-back-btn:active {
    background: rgba(255, 255, 255, 0.3);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

/* Account Detail */
.account-detail {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.detail-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.detail-card-title {
    font-size: 0.75rem;
    color: var(--tg-theme-hint-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
}

.detail-phone {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--premium-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.detail-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(91, 157, 226, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--tg-theme-hint-color);
}

.badge.premium {
    background: rgba(255, 215, 0, 0.1);
    color: var(--gold-color);
}

.badge.verified {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.stat-card {
    background: var(--tg-theme-secondary-bg-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    text-align: center;
}

.stat-card-icon {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.stat-card-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--tg-theme-text-color);
}

.stat-card-label {
    font-size: 0.6875rem;
    color: var(--tg-theme-hint-color);
}

/* Price Card */
.price-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.price-amount {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 2rem;
    font-weight: 700;
    color: var(--gold-color);
}

.price-label {
    font-size: 0.875rem;
    color: var(--tg-theme-hint-color);
}

/* Buy Button */
.buy-button {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--premium-gradient);
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-glow);
    margin-top: var(--spacing-sm);
}

.buy-button:active {
    transform: scale(0.98);
}

.buy-button:disabled {
    background: var(--tg-theme-hint-color);
    box-shadow: none;
    cursor: not-allowed;
}

/* Error State in Detail */
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
}

.error-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.error-state-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.error-state-text {
    color: var(--tg-theme-hint-color);
    font-size: 0.875rem;
}

/* ====================================
   Toast
   ==================================== */

.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    backdrop-filter: blur(10px);
    transition: bottom 0.3s ease;
    z-index: 1000;
    max-width: 90%;
}

.toast.active {
    bottom: var(--spacing-lg);
}

.toast.error {
    border-color: var(--error-color);
}

.toast-message {
    font-size: 0.875rem;
    color: var(--tg-theme-text-color);
}

/* ====================================
   Utilities
   ==================================== */

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

.hidden {
    display: none !important;
}

/* ====================================
   Responsive
   ==================================== */

@media (min-width: 768px) {
    .app-container {
        max-width: 600px;
        margin: 0 auto;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}