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

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #0a0a1a;
    color: #fff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    max-width: 700px;
    width: 100%;
    padding: 30px 20px;
}

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

h1 {
    font-size: 42px;
    font-weight: 300;
}
h1 span {
    color: #4facfe;
    font-weight: 700;
}

.subtitle {
    color: #666;
    font-size: 16px;
    margin-top: 4px;
}

.author-badge {
    margin-top: 10px;
    padding: 6px 16px;
    background: #141425;
    border-radius: 20px;
    display: inline-block;
    font-size: 13px;
    border: 1px solid #2a2a4a;
}
.author-label {
    color: #666;
}
.author-name {
    color: #4facfe;
    font-weight: 500;
}

.section {
    background: #141425;
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 20px;
}

.section h3 {
    color: #fff;
    margin-bottom: 12px;
    font-weight: 400;
}

.input-group {
    display: flex;
    gap: 12px;
}

.input-group input {
    flex: 1;
    padding: 12px 16px;
    background: #1a1a35;
    border: 1px solid #333;
    border-radius: 8px;
    color: #fff;
    font-size: 15px;
    outline: none;
    transition: 0.3s;
}

.input-group input:focus {
    border-color: #4facfe;
    box-shadow: 0 0 0 2px rgba(79, 172, 254, 0.2);
}

.input-group input::placeholder {
    color: #555;
}

.btn-primary {
    background: #4facfe;
    border: none;
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
    transition: 0.3s;
    white-space: nowrap;
}

.btn-primary:hover {
    background: #3d8be0;
    transform: scale(1.02);
}

.hint {
    color: #555;
    font-size: 13px;
    margin-top: 8px;
}

.divider {
    text-align: center;
    color: #444;
    margin: 16px 0;
    font-size: 14px;
}

.upload-area {
    border: 2px dashed #444;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: 0.3s;
}

.upload-area:hover {
    border-color: #4facfe;
    background: rgba(79, 172, 254, 0.05);
}

.upload-area .icon {
    font-size: 48px;
}
.upload-area p {
    color: #aaa;
    font-size: 18px;
}
.upload-area .hint {
    font-size: 14px;
    color: #555;
    margin-top: 4px;
}
.upload-area input {
    display: none;
}

.hidden {
    display: none !important;
}

#loading {
    margin-top: 20px;
    padding: 16px;
    background: #141425;
    border-radius: 12px;
    text-align: center;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid #333;
    border-top-color: #4facfe;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 10px;
}

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

.card {
    background: #141425;
    border-radius: 16px;
    padding: 24px;
    margin-top: 20px;
    border: 1px solid #2a2a4a;
}

.card h3 {
    color: #4facfe;
    margin-bottom: 16px;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.grid .label {
    color: #666;
    font-size: 12px;
    text-transform: uppercase;
}

.grid .value {
    font-size: 16px;
}

.btn {
    display: inline-block;
    background: #4facfe;
    color: #fff;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
}

.btn:hover {
    background: #3d8be0;
    transform: scale(1.03);
}

footer {
    margin-top: 30px;
    text-align: center;
}

.footer-content p {
    color: #444;
    font-size: 13px;
    margin: 2px 0;
}

.footer-author {
    color: #4facfe !important;
    font-size: 13px;
}

.footer-copy {
    color: #333 !important;
    font-size: 11px;
}

.slides-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.slide-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #1a1a35;
    border: 1px solid #2a2a4a;
    border-radius: 10px;
    padding: 14px 18px;
    transition: 0.2s;
}

.slide-item:hover {
    border-color: #4facfe;
    background: #1e1e3a;
}

.slide-item .slide-info {
    flex: 1;
}

.slide-item .slide-name {
    color: #fff;
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 4px;
}

.slide-item .slide-meta {
    color: #666;
    font-size: 12px;
}

.slide-item .slide-meta span {
    color: #888;
    margin-right: 12px;
}

.slide-item .btn-open {
    background: #4facfe;
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: 0.2s;
    white-space: nowrap;
    text-decoration: none;
}

.slide-item .btn-open:hover {
    background: #3d8be0;
    transform: scale(1.05);
}

.no-slides {
    color: #555;
    text-align: center;
    padding: 20px;
    font-size: 14px;
}