/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px 0;
}

header h1 {
    font-size: 24px;
    color: var(--text-primary);
}

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

.user-info span {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
}

.card h2 {
    margin-bottom: 20px;
    color: var(--text-primary);
    font-size: 22px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: 12px;
}

.form-footer {
    margin-top: 15px;
    text-align: center;
}

.form-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
}

.form-footer a:hover {
    text-decoration: underline;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-small {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    width: 100%;
    margin-bottom: 10px;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.btn-primary:disabled {
    background-color: var(--secondary-color);
    cursor: not-allowed;
}

.btn-secondary {
    background-color: transparent;
    color: var(--secondary-color);
    border: 1px solid var(--border-color);
    width: 100%;
}

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

.btn-small {
    padding: 8px 16px;
    font-size: 12px;
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-small:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Messages */
.error-message,
.success-message,
.info-message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-top: 15px;
    font-size: 14px;
    display: none;
}

.error-message {
    background-color: #fef2f2;
    color: var(--danger-color);
    border: 1px solid #fecaca;
}

.success-message {
    background-color: #f0fdf4;
    color: var(--success-color);
    border: 1px solid #bbf7d0;
}

.info-message {
    background-color: #eff6ff;
    color: var(--primary-color);
    border: 1px solid #bfdbfe;
    display: block;
    margin-bottom: 20px;
}

.error-message:not(:empty),
.success-message:not(:empty) {
    display: block;
}

/* Screens */
.screen {
    display: none;
}

.screen.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

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

/* MFA Setup */
.qr-container {
    text-align: center;
    margin: 20px 0;
}

.qr-container img {
    max-width: 250px;
    height: auto;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    background: white;
}

.secret-container {
    background-color: var(--bg-color);
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
    text-align: center;
}

.secret-container code {
    display: block;
    margin-top: 10px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
}

/* Upload Area */
.upload-area {
    margin: 20px 0;
}

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.05);
}

.upload-icon {
    width: 48px;
    height: 48px;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.drop-zone p {
    color: var(--text-primary);
    margin-bottom: 10px;
}

.file-input-label {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.file-input-label:hover {
    background-color: var(--primary-hover);
}

/* Upload Queue */
.upload-queue {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.upload-queue h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.upload-item {
    background-color: var(--bg-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.upload-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.upload-item-name {
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.upload-item-size {
    color: var(--text-secondary);
    font-size: 12px;
    margin-left: 10px;
}

.upload-progress {
    width: 100%;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.upload-progress-bar {
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

.upload-progress-bar.success {
    background-color: var(--success-color);
}

.upload-progress-bar.error {
    background-color: var(--danger-color);
}

.upload-status {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.upload-status.success {
    color: var(--success-color);
}

.upload-status.error {
    color: var(--danger-color);
}

/* Upload History */
.upload-history {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.upload-history h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text-primary);
    display: inline-block;
    margin-right: 10px;
}

.history-items {
    max-height: 400px;
    overflow-y: auto;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background-color: var(--bg-color);
    border-radius: 8px;
    margin-bottom: 8px;
}

.history-item-name {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.history-item-date {
    color: var(--text-secondary);
    font-size: 12px;
    margin-left: 15px;
}

.history-item-status {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    margin-left: 15px;
}

.history-item-status.completed {
    background-color: #d1fae5;
    color: var(--success-color);
}

.history-item-status.pending {
    background-color: #fed7aa;
    color: var(--warning-color);
}

.loading {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-overlay p {
    color: white;
    margin-top: 20px;
    font-size: 16px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: 15px;
    }

    .card {
        padding: 20px;
    }

    header h1 {
        font-size: 20px;
    }

    .upload-item-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .upload-item-size {
        margin-left: 0;
        margin-top: 5px;
    }
}
/* Inactivity Notification */
.inactivity-notification {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease-in;
}

.notification-content {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease-out;
}

.notification-content h3 {
    color: var(--danger-color);
    font-size: 24px;
    margin-bottom: 15px;
    font-weight: 600;
}

.notification-content p {
    color: var(--text-primary);
    font-size: 16px;
    margin-bottom: 20px;
    line-height: 1.5;
}

.notification-timer {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

@keyframes slideIn {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}