/* === QRCodeMan — Dark Minimalist Theme === */

:root {
    --bg-primary: #09090b;
    --bg-secondary: #111114;
    --bg-card: #18181b;
    --bg-input: #1e1e23;
    --border: #27272a;
    --border-hover: #3f3f46;
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #22c55e;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: 150ms ease;
}

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

html { font-size: 15px; }

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

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* === Header === */
.header {
    border-bottom: 1px solid var(--border);
    background: rgba(9, 9, 11, 0.8);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-primary);
    font-size: 1.15rem;
    font-weight: 400;
    letter-spacing: -0.02em;
}

.logo:hover { color: var(--text-primary); }

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

.logo-text strong { font-weight: 700; color: var(--accent); }

.nav { display: flex; align-items: center; gap: 0.5rem; }

.nav-link {
    color: var(--text-secondary);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-xs);
    font-size: 0.9rem;
    transition: all var(--transition);
}

.nav-link:hover { color: var(--text-primary); background: var(--bg-card); }

.nav-logout:hover { color: var(--danger); }

/* === Main === */
.main { padding: 2rem 0 4rem; }

/* === Footer === */
.footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-card);
    border-color: var(--border-hover);
}

.btn-danger:hover {
    color: var(--danger) !important;
    border-color: var(--danger) !important;
}

.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.8rem; }

.btn-full { width: 100%; justify-content: center; }

/* === Forms === */
.form-group { margin-bottom: 1rem; }

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group select {
    width: 100%;
    padding: 0.6rem 0.85rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.9rem;
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2371717a' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.form-group input[type="file"] {
    padding: 0.5rem;
    background: var(--bg-input);
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    width: 100%;
    cursor: pointer;
}

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

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

.form-section {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.form-section:last-of-type { border-bottom: none; }

.form-section h2 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.form-actions { margin-top: 1rem; }

/* Color input */
.color-input { display: flex; gap: 0.5rem; align-items: center; }

.color-input input[type="color"] {
    width: 42px;
    height: 42px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 2px;
    background: var(--bg-input);
}

.color-input input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
.color-input input[type="color"]::-webkit-color-swatch { border: none; border-radius: 4px; }

.color-hex {
    width: 90px !important;
    font-family: 'SF Mono', 'Fira Code', monospace !important;
    font-size: 0.85rem !important;
    text-align: center;
}

/* Range input */
.range-input { display: flex; align-items: center; gap: 0.75rem; }

.range-input input[type="range"] {
    flex: 1;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
}

.range-input input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--bg-primary);
    box-shadow: 0 0 8px var(--accent-glow);
}

.range-input span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 40px;
    text-align: right;
}

/* Input with status */
.input-with-status { position: relative; }
.input-with-status input { padding-right: 5rem; }

#code-status {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    font-weight: 600;
}

.status-checking { color: var(--text-muted); }
.status-available { color: var(--success); }
.status-taken { color: var(--danger); }

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    margin-top: 0.5rem;
}

.logo-current {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
}

.logo-current img { border-radius: 4px; object-fit: contain; }

/* === Login === */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
}

.login-card {
    width: 100%;
    max-width: 380px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.login-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 400;
    margin: 0.75rem 0 0.25rem;
    letter-spacing: -0.02em;
}

.login-header h1 strong { color: var(--accent); }

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

.text-muted { color: var(--text-muted); font-size: 0.85rem; }

/* === Alerts === */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    color: #86efac;
}

/* === Page Header === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
}

.empty-state h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

/* === QR Grid (Dashboard) === */
.qr-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

.qr-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
}

.qr-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.qr-card-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    background: var(--bg-secondary);
    min-height: 180px;
}

.qr-card-preview svg { max-width: 160px; max-height: 160px; }

.qr-card-body { padding: 1rem 1.25rem; }

.qr-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.qr-card-code {
    margin-bottom: 0.35rem;
}

.qr-card-code code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
}

.qr-card-url {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.qr-card-url:hover { color: var(--text-secondary); }

.qr-card-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.stat { display: flex; align-items: center; gap: 0.3rem; }

.qr-card-actions {
    display: flex;
    gap: 0.35rem;
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border);
}

.inline { display: inline; }

/* === QR Editor (Create/Edit) === */
.qr-editor {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 2rem;
    align-items: start;
}

.qr-editor-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.qr-editor-preview {
    position: relative;
}

.preview-sticky {
    position: sticky;
    top: 80px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
}

.preview-sticky h2 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.qr-preview-container {
    display: flex;
    justify-content: center;
    margin-bottom: 1rem;
}

.qr-preview-container svg { max-width: 100%; height: auto; }

.preview-actions { display: flex; flex-direction: column; gap: 0.5rem; }

/* === 404 === */
.error-page {
    text-align: center;
    padding: 6rem 2rem;
}

.error-page h1 {
    font-size: 5rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.error-page p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* === Responsive === */
@media (max-width: 768px) {
    .qr-editor {
        grid-template-columns: 1fr;
    }

    .qr-editor-preview { order: -1; }

    .preview-sticky { position: static; }

    .qr-grid { grid-template-columns: 1fr; }

    .form-row { grid-template-columns: 1fr; }

    .header-inner { gap: 0.5rem; }

    .nav { gap: 0.25rem; }

    .nav-link { padding: 0.35rem 0.5rem; font-size: 0.8rem; }
}