/* ===================================================
   u1x.pw — Dark minimal URL shortener
   Accent: #39FF14 (neon green), used sparingly
   =================================================== */

:root {
    --bg:         #0a0a0a;
    --bg-card:    #111111;
    --bg-input:   #1a1a1a;
    --bg-hover:   #1f1f1f;
    --border:     #2a2a2a;
    --text:       #e0e0e0;
    --text-muted: #888888;
    --accent:     #39FF14;
    --accent-dim: rgba(57, 255, 20, 0.15);
    --danger:     #ff4444;
    --danger-dim: rgba(255, 68, 68, 0.15);
    --radius:     8px;
    --radius-lg:  12px;
    --transition: 150ms ease;
    --font:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono:  'JetBrains Mono', 'Fira Code', monospace;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: opacity var(--transition); }
a:hover { opacity: 0.8; }

/* ---- Layout ---- */
.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 0 20px;
}

.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ---- Header / Nav ---- */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 40px;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.5px;
}

.nav-logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-links a {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--text);
    opacity: 1;
}

/* ---- Hero ---- */
.hero {
    text-align: center;
    padding: 60px 0 40px;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 480px;
    margin: 0 auto;
}

/* ---- Shortener Form ---- */
.shorten-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 24px;
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

.input-group input {
    flex: 1;
}

input, select, textarea {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.9375rem;
    padding: 12px 16px;
    outline: none;
    transition: border-color var(--transition);
    width: 100%;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
}

input::placeholder {
    color: var(--text-muted);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: #30e610;
    box-shadow: 0 0 20px rgba(57, 255, 20, 0.2);
}

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

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: #444;
}

.btn-danger {
    background: var(--danger-dim);
    color: var(--danger);
    border: 1px solid transparent;
}

.btn-danger:hover {
    background: rgba(255, 68, 68, 0.25);
}

.btn-small {
    padding: 6px 14px;
    font-size: 0.8125rem;
}

.btn-icon {
    padding: 8px;
    min-width: 36px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ---- Options row ---- */
.options-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.options-row > * {
    flex: 1;
    min-width: 140px;
}

.option-group {
    margin-bottom: 16px;
}

.option-group label {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 500;
}

/* ---- Result card ---- */
.result-card {
    background: var(--bg-card);
    border: 1px solid var(--accent);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    display: none;
}

.result-card.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.result-url {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
    margin-bottom: 16px;
}

.result-url a {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    flex: 1;
}

.result-actions {
    display: flex;
    gap: 8px;
}

.result-meta {
    display: flex;
    gap: 20px;
    color: var(--text-muted);
    font-size: 0.8125rem;
}

/* ---- QR Code ---- */
.qr-container {
    text-align: center;
    padding: 16px;
    background: #fff;
    border-radius: var(--radius);
    display: inline-block;
}

.qr-container img {
    display: block;
}

/* ---- Auth pages ---- */
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    max-width: 420px;
    margin: 80px auto;
}

.auth-card h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.auth-card p {
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 0.9375rem;
}

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

.form-group label {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 500;
}

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

.auth-footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ---- Dashboard ---- */
.dash-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.dash-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

.dash-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-card .stat-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ---- Links table ---- */
.links-table {
    width: 100%;
    border-collapse: collapse;
}

.links-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.links-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
    vertical-align: middle;
}

.links-table tr:hover td {
    background: var(--bg-hover);
}

.link-code {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--accent);
}

.link-target {
    color: var(--text-muted);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 99px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-active {
    background: var(--accent-dim);
    color: var(--accent);
}

.badge-expired {
    background: var(--danger-dim);
    color: var(--danger);
}

.actions-cell {
    display: flex;
    gap: 4px;
}

/* ---- Link detail / analytics ---- */
.detail-header {
    margin-bottom: 32px;
}

.detail-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
    font-family: var(--font-mono);
    color: var(--accent);
}

.detail-header .target-url {
    color: var(--text-muted);
    font-size: 0.875rem;
    word-break: break-all;
}

.detail-meta {
    display: flex;
    gap: 24px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.detail-meta span {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.detail-meta strong {
    color: var(--text);
}

.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.chart-card h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    font-weight: 500;
}

.chart-card canvas {
    width: 100% !important;
    height: 200px !important;
}

.chart-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.chart-bar-label {
    min-width: 60px;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.chart-bar-fill {
    height: 24px;
    background: var(--accent-dim);
    border-radius: 4px;
    position: relative;
    min-width: 2px;
    transition: width 0.5s ease;
}

.chart-bar-value {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 8px;
}

/* ---- Recent clicks ---- */
.recent-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.recent-table th {
    text-align: left;
    padding: 8px 12px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    font-weight: 500;
}

.recent-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
}

/* ---- Expired page ---- */
.expired-page {
    text-align: center;
    padding: 120px 20px;
}

.expired-page h1 {
    font-size: 4rem;
    font-weight: 700;
    color: var(--danger);
    margin-bottom: 12px;
}

.expired-page p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

/* ---- Toast notifications ---- */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 20px;
    font-size: 0.875rem;
    z-index: 9999;
    animation: slideUp 0.3s ease;
    max-width: 360px;
}

.toast-success { border-color: var(--accent); }
.toast-error { border-color: var(--danger); color: var(--danger); }

/* ---- Error message ---- */
.error-msg {
    background: var(--danger-dim);
    color: var(--danger);
    padding: 10px 16px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    margin-bottom: 16px;
    display: none;
}

.error-msg.active {
    display: block;
}

/* ---- Modal ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    width: 90%;
    max-width: 480px;
}

.modal h3 {
    margin-bottom: 16px;
}

.modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* ---- Empty state ---- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}

/* ---- Animations ---- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* ---- Responsive ---- */
@media (max-width: 640px) {
    .hero h1 { font-size: 1.75rem; }
    .input-group { flex-direction: column; }
    .options-row { flex-direction: column; }
    .dash-stats { grid-template-columns: 1fr; }
    .charts-grid { grid-template-columns: 1fr; }
    .nav { flex-direction: column; gap: 12px; }
    .links-table { font-size: 0.75rem; }
    .links-table th, .links-table td { padding: 10px 8px; }
}

/* ---- Loader ---- */
.loader {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #444; }

/* ---- Utilities ---- */
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--danger); }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-top: 16px; }
.mb-8 { margin-bottom: 32px; }
.hidden { display: none !important; }
.flex { display: flex; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }