:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --accent: #22d3ee;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --gradient-2: linear-gradient(135deg, #0ea5e9 0%, #22d3ee 100%);
}

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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
}

/* Animated Background */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bg-animation::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(34, 211, 238, 0.1) 0%, transparent 40%);
    animation: bgMove 20s ease-in-out infinite;
}

@keyframes bgMove {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    25% {
        transform: translate(-5%, 5%) rotate(5deg);
    }

    50% {
        transform: translate(5%, -5%) rotate(-5deg);
    }

    75% {
        transform: translate(-3%, -3%) rotate(3deg);
    }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    text-align: center;
    padding: 1.5rem 0 2rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.4);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Glass Card */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 1.25rem;
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

/* Login Section */
.login-section {
    max-width: 400px;
    margin: auto;
    text-align: center;
}

.login-section h2 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.login-section p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.5;
    font-size: 0.9rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    touch-action: manipulation;
}

.btn-google {
    background: white;
    color: #1f2937;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    width: 100%;
}

.btn-google:hover,
.btn-google:active {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.btn-google svg {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover,
.btn-primary:active {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover,
.btn-secondary:active {
    background: rgba(255, 255, 255, 0.1);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--error);
    color: white;
}

/* User Info */
.user-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem;
    background: var(--bg-glass);
    border-radius: 14px;
    margin-bottom: 1rem;
    gap: 0.75rem;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
    flex: 1;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    flex-shrink: 0;
}

.user-details {
    min-width: 0;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-email {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 0.25rem;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    flex: 1;
    min-width: fit-content;
    padding: 0.75rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.tab-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.tab-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.1);
}

.tab-content {
    display: none;
}

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

/* Form Elements */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-input::placeholder {
    color: var(--text-secondary);
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Toggle Switch */
.toggle-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--bg-glass);
    border-radius: 12px;
    margin-bottom: 1rem;
}

.toggle-label {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.toggle-title {
    font-weight: 600;
    font-size: 0.9rem;
}

.toggle-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.toggle-switch {
    position: relative;
    width: 52px;
    height: 28px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 28px;
    transition: 0.3s;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: 0.3s;
}

.toggle-switch input:checked+.toggle-slider {
    background: var(--success);
}

.toggle-switch input:checked+.toggle-slider:before {
    transform: translateX(24px);
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.status-badge.inactive {
    background: rgba(148, 163, 184, 0.2);
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

.status-badge.active .status-dot {
    animation: blink 1s ease-in-out infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

/* Folder Browser */
.folder-browser h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.folder-path {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem;
    background: var(--bg-glass);
    border-radius: 10px;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    font-size: 0.85rem;
}

.path-item {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: rgba(99, 102, 241, 0.2);
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.path-item:hover,
.path-item:active {
    background: rgba(99, 102, 241, 0.4);
}

.path-separator {
    color: var(--text-secondary);
}

.folder-list {
    max-height: 250px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.7rem 0.875rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.folder-item:hover,
.folder-item:active {
    background: var(--bg-glass);
    border-color: var(--border);
}

.folder-item.selected {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
}

.folder-icon {
    font-size: 1.25rem;
}

.folder-name {
    flex: 1;
    font-weight: 500;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.folder-loading,
.folder-empty {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: 14px;
    padding: 2rem 1rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    margin-bottom: 1rem;
}

.upload-zone:hover,
.upload-zone:active,
.upload-zone.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 0.75rem;
    opacity: 0.8;
}

.upload-zone h4 {
    font-size: 1rem;
    margin-bottom: 0.4rem;
}

.upload-zone p {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.upload-zone input[type="file"] {
    display: none;
}

/* Selected Files */
.selected-files {
    margin-bottom: 1rem;
}

.selected-files h4 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    max-height: 180px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 0.875rem;
    background: var(--bg-glass);
    border-radius: 10px;
}

.file-icon {
    font-size: 1.1rem;
}

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

.file-name {
    font-weight: 500;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.file-remove {
    background: none;
    border: none;
    color: var(--error);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.25rem;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.file-remove:hover,
.file-remove:active {
    opacity: 1;
}

/* Upload Progress */
.upload-progress {
    margin-bottom: 1rem;
}

.progress-item {
    padding: 0.875rem;
    background: var(--bg-glass);
    border-radius: 10px;
    margin-bottom: 0.4rem;
}

.progress-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.4rem;
}

.progress-filename {
    font-weight: 500;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    margin-right: 0.5rem;
}

.progress-status {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.progress-bar {
    height: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-2);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-item.success .progress-fill {
    background: var(--success);
}

.progress-item.error .progress-fill {
    background: var(--error);
}

/* Upload Actions */
.upload-actions {
    display: flex;
    gap: 0.75rem;
}

.upload-actions .btn {
    flex: 1;
}

/* Destination Info */
.destination-info {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.875rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 10px;
    margin-bottom: 1rem;
}

.destination-info .icon {
    font-size: 1.25rem;
}

.destination-info .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.destination-info .value {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Auto Upload Status */
.auto-status {
    padding: 1rem;
    background: var(--bg-glass);
    border-radius: 12px;
    margin-bottom: 1rem;
}

.auto-status-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.auto-status-title {
    font-weight: 600;
    font-size: 0.9rem;
}

.auto-status-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    font-size: 0.8rem;
}

.auto-status-item {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.auto-status-label {
    color: var(--text-secondary);
    font-size: 0.7rem;
}

.auto-status-value {
    font-weight: 500;
}

/* Log List */
.log-list {
    max-height: 300px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.log-item {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 0.6rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.8rem;
}

.log-item:last-child {
    border-bottom: none;
}

.log-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.log-content {
    flex: 1;
    min-width: 0;
}

.log-filename {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.log-time {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.log-empty {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 1rem;
    left: 1rem;
    right: 1rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.875rem 1rem;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    box-shadow: var(--shadow);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--error);
}

.toast.info {
    border-left: 4px solid var(--primary);
}

.toast-icon {
    font-size: 1.1rem;
}

.toast-message {
    flex: 1;
    font-size: 0.85rem;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0.25rem;
}

/* Spinner */
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px 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);
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
}

/* Desktop Enhancements */
@media (min-width: 768px) {
    .container {
        padding: 2rem;
    }

    .header {
        padding: 2rem 0 2.5rem;
    }

    .logo-icon {
        width: 56px;
        height: 56px;
        font-size: 1.75rem;
    }

    .logo-text {
        font-size: 1.75rem;
    }

    .glass-card {
        padding: 1.5rem;
        border-radius: 24px;
    }

    .tabs {
        justify-content: center;
        gap: 0.75rem;
    }

    .tab-btn {
        flex: none;
        padding: 0.875rem 1.5rem;
    }

    .main-layout {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }

    .toast-container {
        left: auto;
        right: 2rem;
        bottom: 2rem;
        max-width: 400px;
    }

    @keyframes slideUp {
        from {
            transform: translateX(100%);
            opacity: 0;
        }

        to {
            transform: translateX(0);
            opacity: 1;
        }
    }
}