:root {
    --bg-color: #050505;
    --card-bg: #0d0d0d;
    --accent-color: #ffffff;
    --secondary-accent: #1a1a1a;
    --text-main: #ffffff;
    --text-dim: #888888;
    --error-red: #ff4444;
    --success-green: #00ff88;
    --border-color: #222222;
    --font-family: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-family);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.background-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, #111 0%, #050505 100%);
    z-index: -1;
}

.main-container {
    width: 100%;
    max-width: 500px;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    letter-spacing: 1px;
}

.logo i {
    font-size: 1.5rem;
}

.logo b {
    color: var(--text-main);
    font-weight: 800;
}

.status-badge {
    background: var(--card-bg);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.dot {
    width: 8px;
    height: 8px;
    background: var(--success-green);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--success-green);
}

.upload-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.card-header {
    text-align: center;
    margin-bottom: 30px;
}

.card-header h1 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.card-header p {
    color: var(--text-dim);
    font-size: 0.9rem;
}

.highlight {
    color: var(--text-main);
    font-weight: 600;
}

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255,255,255,0.02);
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--accent-color);
    background: rgba(255,255,255,0.05);
}

.drop-content .main-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.drop-content p {
    margin-bottom: 5px;
}

.drop-content span {
    color: var(--accent-color);
    text-decoration: underline;
}

.subtext {
    font-size: 0.8rem;
    color: var(--text-dim);
}

.preview-container {
    margin: 20px 0;
}

.preview-box {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

#file-preview {
    width: 50px;
    height: 50px;
    background: var(--secondary-accent);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#file-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.file-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow: hidden;
}

#file-name {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#file-size {
    font-size: 0.8rem;
    color: var(--text-dim);
}

.upload-status {
    margin-top: 20px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--secondary-accent);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-color);
    transition: width 0.2s ease;
}

#progress-text {
    font-size: 0.9rem;
    font-weight: 600;
    text-align: right;
    display: block;
}

.result-container {
    text-align: center;
    margin-top: 20px;
    animation: fadeIn 0.5s ease;
}

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

.success-icon {
    font-size: 3rem;
    color: var(--success-green);
    margin-bottom: 10px;
}

.link-box {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin: 20px 0;
    display: flex;
    overflow: hidden;
}

.link-box input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    padding: 12px 15px;
    font-family: inherit;
    font-size: 0.9rem;
}

.link-box input:focus {
    outline: none;
}

.link-box button {
    background: var(--secondary-accent);
    border: none;
    color: var(--text-main);
    padding: 0 20px;
    cursor: pointer;
    transition: background 0.2s;
}

.link-box button:hover {
    background: #252525;
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s;
}

.secondary-btn:hover {
    background: var(--secondary-accent);
}

.token-container {
    margin-top: 30px;
    position: relative;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.token-container:hover, .token-container:focus-within {
    opacity: 1;
}

.token-container input {
    width: 100%;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 15px 12px 40px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.85rem;
}

.token-container i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
}

.error-message {
    margin-top: 20px;
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid var(--error-red);
    color: var(--error-red);
    padding: 15px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.hidden {
    display: none;
}

footer {
    text-align: center;
    margin-top: 40px;
    color: var(--text-dim);
    font-size: 0.8rem;
}

.nav-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-btn {
    flex: 1;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-dim);
    padding: 12px;
    border-radius: 12px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 600;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.tab-btn.active {
    border-color: var(--accent-color);
    color: var(--text-main);
    background: var(--secondary-accent);
}

.file-list-container {
    max-height: 400px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-right: 5px;
}

.file-list-container::-webkit-scrollbar {
    width: 5px;
}

.file-list-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}

.file-item {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 15px;
    animation: fadeIn 0.3s ease;
}

.file-item:hover {
    background: rgba(255,255,255,0.05);
}

.file-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.file-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.file-details {
    flex: 1;
    min-width: 0;
}

.file-details span {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-details small {
    color: var(--text-dim);
    font-size: 0.75rem;
}

.file-actions {
    display: flex;
    gap: 8px;
}

.action-btn {
    background: var(--secondary-accent);
    border: none;
    color: var(--text-main);
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.action-btn:hover {
    background: #222;
}

.action-btn.delete {
    color: var(--error-red);
}

.loading-spinner {
    text-align: center;
    padding: 40px;
    color: var(--text-dim);
}

.action-btn.active {
    background: var(--accent-color);
    color: #fff;
}

.file-item.is-permanent {
    border-color: rgba(255, 215, 0, 0.3);
    background: rgba(255, 215, 0, 0.05);
}

.file-item.is-permanent .fa-star {
    color: #ffd700;
}

@media (max-width: 480px) {
    .upload-card {
        padding: 20px;
    }
}