/* TripLink design system — clean, professional marketplace UI (no build step). */
:root {
    --tl-bg: #f1f5f9;
    --tl-surface: #ffffff;
    --tl-text: #0f172a;
    --tl-muted: #64748b;
    --tl-subtle: #94a3b8;
    --tl-border: #e2e8f0;
    --tl-border-strong: #cbd5e1;
    --tl-accent: #4f46e5;
    --tl-accent-dark: #4338ca;
    --tl-dark: #0b1220;
    --tl-success: #059669;
    --tl-danger: #dc2626;
    --tl-warn: #d97706;
    --tl-radius: 14px;
    --tl-shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);
    --tl-shadow-lg: 0 10px 30px rgba(15, 23, 42, .12);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--tl-bg); color: var(--tl-text); line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--tl-accent); text-decoration: none; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .4em; }
h1 { font-size: 30px; font-weight: 800; letter-spacing: -.02em; }
h2 { font-size: 22px; font-weight: 700; }
.muted { color: var(--tl-muted); }

/* Nav */
.nav { display: flex; align-items: center; justify-content: space-between; padding: 16px 22px;
    background: var(--tl-surface); border-bottom: 1px solid var(--tl-border); position: sticky; top: 0; z-index: 10; }
.brand { font-weight: 800; font-size: 19px; letter-spacing: -.02em; color: var(--tl-text); }
.brand .dot { color: var(--tl-accent); }
.nav .links a { color: var(--tl-muted); font-weight: 600; font-size: 14px; margin-left: 18px; }
.nav .links a:hover { color: var(--tl-text); }

/* Layout */
.wrap { max-width: 980px; margin: 0 auto; padding: 28px 20px 60px; }
.narrow { max-width: 560px; }

/* Hero */
.hero { background: radial-gradient(1200px 500px at 70% -10%, #1e293b, var(--tl-dark)); color: #fff;
    padding: 72px 20px 80px; text-align: center; }
.hero h1 { font-size: 42px; color: #fff; max-width: 760px; margin: 0 auto .5em; }
.hero p { color: #cbd5e1; font-size: 18px; max-width: 620px; margin: 0 auto 28px; }
.hero .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background: var(--tl-accent); color: #fff; border: 0; border-radius: 10px; padding: 13px 22px;
    font-size: 15px; font-weight: 700; cursor: pointer; transition: background .15s, transform .05s; text-decoration: none; }
.btn:hover { background: var(--tl-accent-dark); }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: rgba(255,255,255,.1); color: #fff; border: 1px solid rgba(255,255,255,.25); }
.btn.ghost:hover { background: rgba(255,255,255,.18); }
.btn.full { width: 100%; }
.btn.lg { padding: 15px 28px; font-size: 16px; }

/* Cards */
.card { background: var(--tl-surface); border: 1px solid var(--tl-border); border-radius: var(--tl-radius);
    padding: 24px; box-shadow: var(--tl-shadow); }
.card + .card { margin-top: 18px; }

/* Role choice */
.roles { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 620px) { .roles { grid-template-columns: 1fr; } }
.role { display: block; background: var(--tl-surface); border: 1px solid var(--tl-border); border-radius: var(--tl-radius);
    padding: 28px; text-align: center; box-shadow: var(--tl-shadow); transition: border-color .15s, transform .1s, box-shadow .15s; }
.role:hover { border-color: var(--tl-accent); transform: translateY(-2px); box-shadow: var(--tl-shadow-lg); }
.role .ico { font-size: 34px; }
.role h3 { margin: 12px 0 6px; color: var(--tl-text); }
.role .price { color: var(--tl-accent); font-weight: 800; margin-top: 10px; }
.role .trial { color: var(--tl-success); font-size: 13px; font-weight: 700; }

/* Forms */
label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; color: var(--tl-text); }
input, select, textarea {
    width: 100%; padding: 11px 13px; border: 1px solid var(--tl-border-strong); border-radius: 10px;
    font-size: 15px; font-family: inherit; background: #fff; color: var(--tl-text); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--tl-accent); box-shadow: 0 0 0 3px rgba(79,70,229,.15); }
input[type=file] { padding: 9px; background: #f8fafc; }
.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row > .col { flex: 1 1 200px; }
.section-title { font-size: 13px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
    color: var(--tl-subtle); margin: 26px 0 4px; padding-top: 18px; border-top: 1px solid var(--tl-border); }
.hint { font-size: 12.5px; color: var(--tl-muted); margin-top: 4px; }

/* Alerts */
.errors { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; }
.status { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; }

/* Badge */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge.pending { background: #fffbeb; color: var(--tl-warn); }

/* Footer */
.footer { text-align: center; color: var(--tl-subtle); font-size: 13px; padding: 30px 20px; }

/* Trip cards (board + provider list) */
.tcard { background: var(--tl-surface); border: 1px solid var(--tl-border); border-left: 4px solid var(--tl-border-strong);
    border-radius: var(--tl-radius); padding: 18px 20px; margin-top: 16px; box-shadow: var(--tl-shadow); }
.tcard.urgent { border-left-color: var(--tl-danger); }
.tcard-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.tprice { font-size: 22px; font-weight: 800; color: var(--tl-text); }
.provider-name { font-weight: 700; color: var(--tl-muted); font-size: 14px; }
.troute { font-weight: 600; font-size: 16px; margin: 8px 0 4px; }
.tbadge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 11px; font-weight: 800;
    letter-spacing: .04em; margin-left: 8px; vertical-align: middle; }
.tbadge.urgent { background: #fef2f2; color: var(--tl-danger); }
.tbadge.open { background: #eef2ff; color: var(--tl-accent); }
.tbadge.claimed { background: #ecfdf5; color: var(--tl-success); }
.tbadge.completed { background: #f1f5f9; color: var(--tl-muted); }
.tbadge.canceled { background: #f1f5f9; color: var(--tl-muted); }

/* Chat */
.chat-list { max-height: 280px; overflow-y: auto; margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.chat-msg { display: flex; }
.chat-msg.mine { justify-content: flex-end; }
.chat-msg .bubble { max-width: 78%; background: #f1f5f9; border-radius: 12px; padding: 8px 12px; font-size: 14px; }
.chat-msg.mine .bubble { background: var(--tl-accent); color: #fff; }
.chat-msg .who { font-size: 11px; font-weight: 700; opacity: .7; margin-bottom: 2px; }
.chat-msg .at { font-size: 10.5px; opacity: .6; margin-top: 3px; text-align: right; }

/* Settlement status badges */
.tbadge.settled { background: #ecfdf5; color: var(--tl-success); }
.tbadge.overdue { background: #fef2f2; color: var(--tl-danger); }
.tbadge.disputed { background: #fffbeb; color: var(--tl-warn); }