:root {
    --primary-color: #00d9ff;
    --secondary-color: #00ff88;
    --dark-bg: #0a0e27;
    --card-bg: #1a1f3a;
    --text-light: #ffffff;
    --text-gray: #a0a0a0;
    --border-color: #2a2f4a;
    --success-color: #00ff88;
    --error-color: #ff4444;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1a1f3a 100%);
    color: var(--text-light);
    min-height: 100vh;
}

/* Dashboard Styles */
.dashboard-container,
.upload-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.dashboard-header,
.upload-header {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 217, 255, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.header-content h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info span {
    color: var(--text-gray);
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--dark-bg);
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 217, 255, 0.4);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
}

/* Welcome Section */
.welcome-section {
    text-align: center;
    margin-bottom: 40px;
}

.welcome-section h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-light);
}

.welcome-section p {
    color: var(--text-gray);
    font-size: 1.1rem;
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.action-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    text-decoration: none;
    color: var(--text-light);
}

.action-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 217, 255, 0.2);
}

.action-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.action-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.action-card p {
    color: var(--text-gray);
}

/* Uploads Section */
.uploads-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
}

.uploads-section h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.uploads-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.upload-item {
    background: var(--dark-bg);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 4px solid var(--primary-color);
}

.upload-info h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.upload-info p {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.upload-date {
    color: var(--text-gray);
    font-size: 0.85rem;
}

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

.empty-state {
    text-align: center;
    color: var(--text-gray);
    padding: 40px;
}

/* Upload Form */
.upload-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 40px;
    max-width: 600px;
    margin: 0 auto;
}

.upload-card h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.subtitle {
    color: var(--text-gray);
    margin-bottom: 30px;
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-light);
}

.form-group input[type="text"],
.form-group input[type="email"] {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--dark-bg);
    color: var(--text-light);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

.file-input-wrapper {
    position: relative;
}

.form-group input[type="file"] {
    padding: 12px 16px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background: var(--dark-bg);
    color: var(--text-light);
    font-size: 1rem;
    cursor: pointer;
    width: 100%;
    transition: border-color 0.3s ease;
}

.form-group input[type="file"]:hover {
    border-color: var(--primary-color);
}

.file-info {
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* Upload Progress */
.upload-progress {
    margin: 20px 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--dark-bg);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
    width: 0%;
}

#progress-text {
    text-align: center;
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* Messages */
.message {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.95rem;
    display: none;
}

.message.success {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
    display: block;
}

.message.error {
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
    display: block;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .user-info {
        width: 100%;
        justify-content: space-between;
    }

    .upload-card {
        padding: 25px;
    }

    .action-card {
        padding: 20px;
    }
}