/**
 * OutputBooks License Manager - Modern Styling
 */
:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --success: #10b981;
    --success-light: #ecfdf5;
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 10px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    background: #1e1b4b;
    color: #fff;
    padding: 0.85rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
}

.brand-badge {
    background: #6366f1;
    font-size: 0.7rem;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-links {
    display: flex;
    gap: 1.25rem;
    list-style: none;
}

.nav-links a {
    color: #c7d2fe;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-links a:hover, .nav-links a.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

/* Layout */
.container {
    max-width: 1240px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 1.5rem;
    flex: 1;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1e293b;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.stat-val {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
}

.stat-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

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

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }

.btn-secondary { background: #e2e8f0; color: #334155; }
.btn-secondary:hover { background: #cbd5e1; }

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

/* Cards & Tables */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 2rem;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fafbfc;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: #1e293b;
}

.card-body {
    padding: 1.5rem;
}

.table-responsive {
    overflow-x: auto;
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

table.data-table th {
    background: #f8fafc;
    color: #475569;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border);
}

table.data-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
    color: #334155;
    vertical-align: middle;
}

table.data-table tr:hover {
    background: #f8fafc;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge-purple { background: #ede9fe; color: #6d28d9; }
.badge-blue { background: #dbeafe; color: #1d4ed8; }
.badge-green { background: #d1fae5; color: #047857; }
.badge-yellow { background: #fef3c7; color: #b45309; }
.badge-gray { background: #f1f5f9; color: #475569; }
.badge-red { background: #fee2e2; color: #b91c1c; }

/* Form Controls */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

label.form-label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    color: #334155;
    margin-bottom: 0.4rem;
}

.form-control {
    width: 100%;
    padding: 0.65rem 0.85rem;
    font-size: 0.95rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    color: #1e293b;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-help {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
}

.code-box {
    background: #0f172a;
    color: #38bdf8;
    padding: 1rem 1.25rem;
    border-radius: 6px;
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: 0.85rem;
    word-break: break-all;
    position: relative;
    user-select: all;
    border: 1px solid #1e293b;
}

/* Presets button strip */
.preset-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f1f5f9;
    border-radius: 8px;
    align-items: center;
}

.preset-btn {
    background: #fff;
    border: 1px solid var(--border);
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    color: #334155;
    transition: all 0.15s;
}

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

/* Alert Boxes */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success { background: var(--success-light); color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger { background: var(--danger-light); color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: var(--primary-light); color: #3730a3; border: 1px solid #c7d2fe; }

/* Toast */
#toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #1e293b;
    color: #fff;
    padding: 0.85rem 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 9999;
    pointer-events: none;
}

#toast.show {
    opacity: 1;
    transform: translateY(0);
}

footer {
    background: #fff;
    border-top: 1px solid var(--border);
    padding: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: auto;
}