:root {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-surface-light: #334155;
    --color-border: #475569;
    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-danger-hover: #dc2626;
    --radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    color: white;
}

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

.btn-secondary {
    background: var(--color-surface-light);
}
.btn-secondary:hover {
    background: var(--color-border);
}

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

.btn-warning {
    background: var(--color-warning);
    color: #000;
}

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

.btn-large {
    padding: 12px 24px;
    font-size: 16px;
}

.btn-small {
    padding: 4px 12px;
    font-size: 13px;
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--color-text-muted);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--color-primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-help {
    margin-top: 4px;
    font-size: 13px;
    color: var(--color-text-muted);
}

.input-small {
    width: 60px;
    padding: 4px 8px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 13px;
}

.inline-form {
    display: inline-block;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid var(--color-danger);
    color: #fca5a5;
}

/* Extract Page */
.extract-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.extract-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 48px;
    width: 100%;
    max-width: 440px;
    text-align: center;
    box-shadow: var(--shadow);
}

.extract-card h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.extract-card .subtitle {
    color: var(--color-text-muted);
    margin-bottom: 32px;
}

.extract-form input {
    text-align: center;
    font-size: 20px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.help-text {
    margin-top: 24px;
    font-size: 13px;
    color: var(--color-text-muted);
}

.help-text p {
    margin: 4px 0;
}

/* Result Page */
.result-card .success-icon {
    width: 64px;
    height: 64px;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 20px;
}

.package-info {
    text-align: left;
    margin: 24px 0;
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--radius);
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    color: var(--color-text-muted);
    font-size: 14px;
}

.info-value {
    font-weight: 500;
}

.download-btn {
    width: 100%;
    margin-top: 8px;
}

.download-note {
    margin-top: 12px;
    font-size: 13px;
    color: var(--color-text-muted);
}

/* Admin Login */
.admin-login-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.login-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 48px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow);
}

.login-card h1 {
    text-align: center;
    margin-bottom: 32px;
}

/* Admin Layout */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 240px;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-header h2 {
    font-size: 18px;
}

.sidebar-nav {
    padding: 16px 0;
}

.nav-item {
    display: block;
    padding: 12px 24px;
    color: var(--color-text-muted);
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-item:hover,
.nav-item.active {
    color: var(--color-text);
    background: var(--color-surface-light);
    border-left-color: var(--color-primary);
}

.nav-logout {
    margin-top: 16px;
    border-top: 1px solid var(--color-border);
    color: var(--color-danger);
}

.admin-main {
    flex: 1;
    margin-left: 240px;
    padding: 32px;
    max-width: calc(100% - 240px);
}

.admin-main h1 {
    margin-bottom: 24px;
}

.admin-main h2 {
    margin: 32px 0 16px;
    font-size: 18px;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    margin-top: 4px;
    color: var(--color-text-muted);
    font-size: 14px;
}

/* Cards */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
}

.card h2 {
    margin-top: 0;
    margin-bottom: 20px;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    color: var(--color-text-muted);
    font-weight: 500;
    background: var(--color-surface);
}

.data-table tr:hover {
    background: rgba(255,255,255,0.03);
}

.empty-cell {
    text-align: center;
    color: var(--color-text-muted);
    padding: 32px;
}

.row-disabled {
    opacity: 0.6;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: #6ee7b7;
}

.badge-error {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #fcd34d;
}

/* Action Group */
.action-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Key Result */
.key-result-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 48px;
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
}

.key-display {
    margin: 24px 0;
    padding: 24px;
    background: var(--color-bg);
    border-radius: var(--radius);
}

.key-display label {
    display: block;
    margin-bottom: 12px;
    color: var(--color-text-muted);
    font-size: 14px;
}

.key-code {
    font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
    font-size: 24px;
    letter-spacing: 4px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 16px;
    user-select: all;
}

.key-details {
    text-align: left;
    margin: 24px 0;
    padding: 16px;
    background: var(--color-bg);
    border-radius: var(--radius);
}

/* User Agent Cell */
.user-agent-cell {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 20px;
    color: var(--color-text-muted);
    font-size: 13px;
    border-top: 1px solid var(--color-border);
}

/* Responsive */
@media (max-width: 768px) {
    .admin-sidebar {
        width: 100%;
        position: relative;
        height: auto;
    }
    .admin-main {
        margin-left: 0;
        max-width: 100%;
    }
    .admin-layout {
        flex-direction: column;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .extract-card,
    .login-card {
        padding: 32px 24px;
    }
}

code {
    font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
    background: var(--color-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}