/* =============================================================================
   LowTicket SaaS - Design System
   Identidade propria, moderna, responsiva (mobile-first).
   ========================================================================== */

:root {
    --brand: #6366f1;
    --brand-600: #4f46e5;
    --brand-700: #4338ca;
    --brand-soft: #eef2ff;
    --accent: #8b5cf6;
    --success: #16a34a;
    --success-soft: #dcfce7;
    --warning: #d97706;
    --warning-soft: #fef3c7;
    --danger: #dc2626;
    --danger-soft: #fee2e2;
    --info: #0891b2;

    --ink: #0f172a;
    --ink-2: #334155;
    --muted: #64748b;
    --line: #e2e8f0;
    --bg: #f8fafc;
    --card: #ffffff;

    --radius: 14px;
    --radius-sm: 10px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
    --shadow: 0 4px 16px rgba(15, 23, 42, .08);
    --shadow-lg: 0 20px 40px rgba(15, 23, 42, .12);
    --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --sidebar-w: 260px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.55;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-600); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5rem; font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: 1.9rem; }
h2 { font-size: 1.4rem; }
p { margin: 0 0 1rem; }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.container-sm { max-width: 460px; }

/* ---- Botoes ---- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    padding: .7rem 1.25rem; border-radius: var(--radius-sm); border: 1px solid transparent;
    font-weight: 600; font-size: .95rem; cursor: pointer; transition: all .15s ease;
    text-decoration: none; white-space: nowrap; line-height: 1;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--brand-600); }
.btn-ghost { background: #fff; color: var(--ink-2); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-600); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-lg { padding: .95rem 1.75rem; font-size: 1.05rem; }
.btn-sm { padding: .45rem .8rem; font-size: .85rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* ---- Cards ---- */
.card {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); box-shadow: var(--shadow-sm);
}
.card-body { padding: 1.5rem; }
.card-header { padding: 1.15rem 1.5rem; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.card-header h2, .card-header h3 { margin: 0; }

/* ---- Formularios ---- */
.form-group { margin-bottom: 1.15rem; }
.form-label { display: block; font-weight: 600; font-size: .88rem; margin-bottom: .4rem; color: var(--ink-2); }
.form-control, select.form-control, textarea.form-control {
    width: 100%; padding: .7rem .85rem; border: 1px solid var(--line); border-radius: var(--radius-sm);
    font-size: .95rem; font-family: inherit; color: var(--ink); background: #fff; transition: border-color .15s, box-shadow .15s;
}
.form-control:focus {
    outline: none; border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, .15);
}
textarea.form-control { min-height: 96px; resize: vertical; }
.form-hint { font-size: .8rem; color: var(--muted); margin-top: .35rem; }
.form-error { color: var(--danger); font-size: .82rem; margin-top: .35rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-row-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }

/* ---- Alertas / Flash ---- */
.alert { padding: .85rem 1.1rem; border-radius: var(--radius-sm); margin-bottom: 1rem; font-size: .92rem; border: 1px solid transparent; }
.alert-success { background: var(--success-soft); color: #166534; border-color: #bbf7d0; }
.alert-error, .alert-danger { background: var(--danger-soft); color: #991b1b; border-color: #fecaca; }
.alert-warning { background: var(--warning-soft); color: #92400e; border-color: #fde68a; }
.alert-info { background: #e0f2fe; color: #075985; border-color: #bae6fd; }

/* ---- Badges ---- */
.badge { display: inline-flex; align-items: center; gap: .3rem; padding: .28rem .6rem; border-radius: 999px; font-size: .74rem; font-weight: 600; }
.badge-gray { background: #f1f5f9; color: var(--muted); }
.badge-green { background: var(--success-soft); color: #166534; }
.badge-yellow { background: var(--warning-soft); color: #92400e; }
.badge-red { background: var(--danger-soft); color: #991b1b; }
.badge-blue { background: var(--brand-soft); color: var(--brand-700); }
.badge-purple { background: #f3e8ff; color: #6b21a8; }

/* ---- Tabelas ---- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; }
table.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.table th { text-align: left; padding: .85rem 1rem; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); background: #f8fafc; border-bottom: 1px solid var(--line); }
table.table td { padding: .85rem 1rem; border-bottom: 1px solid var(--line); }
table.table tbody tr:last-child td, table.table tr:last-child td { border-bottom: none; }
table.table tr:hover td { background: #fcfcfd; }

/* ---- Utilidades ---- */
.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: .5rem; } .gap-2 { gap: 1rem; }
.text-muted { color: var(--muted); }
.text-sm { font-size: .85rem; } .text-lg { font-size: 1.15rem; }
.text-center { text-align: center; } .text-right { text-align: right; }
.mt-0{margin-top:0}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}
.mb-0{margin-bottom:0}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}
.fw-600{font-weight:600}.fw-700{font-weight:700}
.hidden { display: none; }

/* ---- Empty state ---- */
.empty-state { text-align: center; padding: 3rem 1.5rem; color: var(--muted); }
.empty-state .icon { font-size: 2.5rem; margin-bottom: .75rem; opacity: .5; }
.empty-state h3 { color: var(--ink-2); }

/* ---- Skeleton loading ---- */
.skeleton { background: linear-gradient(90deg, #eef2f7 25%, #e2e8f0 37%, #eef2f7 63%); background-size: 400% 100%; animation: skeleton 1.4s ease infinite; border-radius: 8px; }
@keyframes skeleton { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* ---- Stat cards ---- */
.stat-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.35rem; box-shadow: var(--shadow-sm); }
.stat-card .label { font-size: .82rem; color: var(--muted); font-weight: 600; }
.stat-card .value { font-size: 1.65rem; font-weight: 800; margin-top: .35rem; letter-spacing: -.02em; }
.stat-card .trend { font-size: .8rem; margin-top: .35rem; }
.stat-card .trend.up { color: var(--success); }
.stat-card .trend.down { color: var(--danger); }

@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    h1 { font-size: 1.55rem; }
}