:root {
    --bg-color: var(--tg-theme-bg-color, #121212);
    --text-color: var(--tg-theme-text-color, #ffffff);
    --hint-color: var(--tg-theme-hint-color, #a0a0a0);
    --button-color: var(--tg-theme-button-color, #c8a2c8);
    --button-text-color: var(--tg-theme-button-text-color, #121212);
    --secondary-bg-color: var(--tg-theme-secondary-bg-color, #1e1e1e);
    --accent-color: var(--tg-theme-link-color, #e0b0ff);
    
    --nav-height: 70px;
    --safe-area-bottom: env(safe-area-inset-bottom, 20px);
}

* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overscroll-behavior-y: none;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-family: 'Syne', sans-serif;
    margin: 0;
    font-weight: 700;
}

.app-container {
    padding-bottom: calc(var(--nav-height) + var(--safe-area-bottom));
    min-height: 100vh;
}

.app-header {
    padding: 24px 20px 16px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    position: sticky;
    top: 0;
    background: rgba(18, 18, 18, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 10;
}

.app-header h1 {
    font-size: 32px;
    letter-spacing: -1px;
    background: linear-gradient(135deg, var(--text-color) 0%, var(--hint-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.balance {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-color);
    background: rgba(224, 176, 255, 0.1);
    padding: 6px 12px;
    border-radius: 20px;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

.view {
    display: none;
    padding: 0 20px;
    animation: slideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.view.active {
    display: block;
}

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

@keyframes slideIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.categories-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    padding-bottom: 20px;
}

.category-card {
    background: var(--secondary-bg-color);
    border-radius: 16px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.category-card:active {
    transform: scale(0.98);
    background: rgba(255, 255, 255, 0.1);
}

.cat-thumb {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    object-fit: cover;
    background: var(--bg-color);
}

.cat-info {
    flex-grow: 1;
}

.cat-name {
    font-family: 'Syne', sans-serif;
    font-size: 20px;
    margin-bottom: 4px;
}

.cat-stats {
    font-size: 13px;
    color: var(--hint-color);
    display: flex;
    gap: 12px;
}

.cat-chevron {
    color: var(--hint-color);
    font-size: 20px;
}

.back-btn {
    background: none;
    border: none;
    color: var(--hint-color);
    font-family: 'Outfit', sans-serif;
    font-size: 15px;
    padding: 12px 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.category-header h2 {
    font-size: 36px;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.media-type-selector {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.type-btn {
    flex: 1;
    background: var(--secondary-bg-color);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    padding: 16px;
    border-radius: 16px;
    font-family: 'Outfit', sans-serif;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.type-btn.active {
    background: var(--button-color);
    color: var(--button-text-color);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(200, 162, 200, 0.2);
}

.type-icon {
    font-size: 24px;
}

.stats-card {
    display: flex;
    background: var(--secondary-bg-color);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat:last-child {
    border-right: none;
}

.stat-value {
    font-family: 'Syne', sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-color);
}

.stat-label {
    font-size: 12px;
    color: var(--hint-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

.buy-btn {
    width: 100%;
    padding: 18px;
    border: none;
    border-radius: 16px;
    background: var(--button-color);
    color: var(--button-text-color);
    font-family: 'Outfit', sans-serif;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.2s;
}

.buy-btn:active:not(:disabled) {
    transform: scale(0.98);
}

.buy-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--secondary-bg-color);
    color: var(--hint-color);
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
}

.mt-4 {
    margin-top: 24px;
}

.media-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    background: var(--secondary-bg-color);
    cursor: pointer;
}

.media-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    pointer-events: none;
}

.play-icon::after {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 0 8px 14px;
    border-color: transparent transparent transparent white;
    margin-left: 4px;
}

.download-btn {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
}

.download-btn svg {
    width: 18px;
    height: 18px;
    fill: white;
}

.profile-card {
    background: var(--secondary-bg-color);
    border-radius: 24px;
    padding: 32px 20px;
    text-align: center;
    margin: 0 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.profile-avatar {
    font-size: 64px;
    margin-bottom: 16px;
}

.profile-balance {
    font-size: 32px;
    color: var(--accent-color);
}

.profile-subtitle {
    color: var(--hint-color);
    font-size: 14px;
    margin-top: 4px;
}

.placeholder-content {
    text-align: center;
    padding: 40px 20px;
    color: var(--hint-color);
}

.placeholder-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--nav-height) + var(--safe-area-bottom));
    background: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    padding-bottom: var(--safe-area-bottom);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 100;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--hint-color);
    cursor: pointer;
    transition: color 0.2s;
    font-family: 'Outfit', sans-serif;
    gap: 4px;
}

.nav-item.active {
    color: var(--accent-color);
}

.nav-icon {
    font-size: 22px;
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.nav-item.active .nav-icon {
    transform: translateY(-2px) scale(1.1);
}

.nav-label {
    font-size: 11px;
    font-weight: 600;
}

.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.95);
    align-items: center;
    justify-content: center;
    padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom) 0;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox img, .lightbox video {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    animation: zoomIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox video {
    outline: none;
}

@keyframes zoomIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.status {
    text-align: center;
    margin-top: 12px;
    font-size: 13px;
    min-height: 16px;
}
.status.error { color: #ff6b6b; }
.status.success { color: #51cf66; }

/* Additional Library Styles */
.library-group {
    margin-bottom: 24px;
}

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

.library-group-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin: 24px 0 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 8px;
}

.library-group-header h3 {
    font-size: 20px;
    margin: 0;
}

.library-group-count {
    color: var(--hint-color);
    font-size: 13px;
    font-weight: 600;
}

.library-container {
    padding: 0 20px;
}

.load-more-container {
    text-align: center;
    margin: 32px 0 24px;
}

/* ============================================================================
   PAYMENT & TOP-UP STYLES
   ============================================================================ */

.section {
    padding: 0 20px;
}

.section-title {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text-color);
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.package-card {
    background: var(--secondary-bg-color);
    border-radius: 16px;
    padding: 16px;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    border: 2px solid transparent;
}

.package-card:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-color);
}

.package-card:active {
    transform: translateY(0);
}

.package-credits {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
    font-family: 'Syne', sans-serif;
}

.package-price {
    font-size: 16px;
    color: var(--accent-color);
    font-weight: 600;
}

.package-discount {
    display: inline-block;
    background: rgba(76, 175, 80, 0.2);
    color: #4caf50;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 12px;
    margin-top: 8px;
}

.topup-btn {
    width: 100%;
    padding: 14px;
    background: var(--button-color);
    color: var(--button-text-color);
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.topup-btn:hover {
    opacity: 0.9;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-content {
    background: var(--bg-color);
    border-radius: 20px;
    max-width: 400px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--secondary-bg-color);
}

.modal-header h3 {
    margin: 0;
    font-size: 20px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--hint-color);
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-body {
    padding: 20px;
}

.selected-package {
    text-align: center;
    padding: 20px;
    background: var(--secondary-bg-color);
    border-radius: 16px;
    margin-bottom: 20px;
}

.selected-package h4 {
    margin: 0 0 8px 0;
    font-size: 24px;
    color: var(--text-color);
}

.package-price-large {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-color);
    font-family: 'Syne', sans-serif;
}

.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.method-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: var(--secondary-bg-color);
    border: 2px solid transparent;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-color);
}

.method-btn:hover {
    border-color: var(--accent-color);
    background: rgba(255, 255, 255, 0.05);
}

.method-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.method-text {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.method-desc {
    font-size: 13px;
    color: var(--hint-color);
}

.crypto-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--secondary-bg-color);
}

.crypto-section h4 {
    margin-bottom: 12px;
    font-size: 16px;
}

.crypto-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 20px;
}

.crypto-btn {
    padding: 12px;
    background: var(--secondary-bg-color);
    border: 2px solid transparent;
    border-radius: 12px;
    color: var(--text-color);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.crypto-btn:hover {
    border-color: var(--accent-color);
}

.payment-details {
    text-align: center;
    padding: 20px;
    background: var(--secondary-bg-color);
    border-radius: 16px;
}

.qr-container {
    margin: 16px 0;
}

.qr-container img {
    max-width: 200px;
    border-radius: 12px;
    background: white;
    padding: 8px;
}

.address-container {
    display: flex;
    gap: 8px;
    align-items: center;
    margin: 16px 0;
    padding: 12px;
    background: var(--bg-color);
    border-radius: 8px;
    overflow: hidden;
}

.address-container code {
    flex: 1;
    font-size: 12px;
    word-break: break-all;
    color: var(--hint-color);
}

.copy-btn {
    padding: 8px 12px;
    background: var(--button-color);
    color: var(--button-text-color);
    border: none;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.payment-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
}

.payment-status .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ffc107;
    animation: pulse 2s infinite;
}

.payment-status.completed .status-dot {
    background: #4caf50;
    animation: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}