/* ============================================================
   Travel Points Tracker — Main Stylesheet
   Theme: Deep navy + gold, airline-inspired
   ============================================================ */

:root {
  --navy:    #0d1b2a;
  --navy2:   #1b2d42;
  --navy3:   #243447;
  --gold:    #f0a500;
  --gold2:   #ffc94a;
  --white:   #f0f4f8;
  --muted:   #8a9bb0;
  --danger:  #e05c5c;
  --success: #4caf82;
  --card-bg: #162230;
  --border:  #263a50;
  --radius:  12px;
  --shadow:  0 4px 24px rgba(0,0,0,0.4);
}

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

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--navy);
  color: var(--white);
  min-height: 100vh;
}

a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold2); }

/* ── NAV ── */
nav {
  background: var(--navy2);
  border-bottom: 2px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 64px;
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 2px 16px rgba(0,0,0,0.5);
}
.nav-brand {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gold);
  display: flex; align-items: center; gap: .5rem;
}
.nav-brand span { font-size: 1.5rem; }
.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-links a {
  color: var(--white);
  font-size: .95rem;
  padding: .4rem .8rem;
  border-radius: 8px;
  transition: background .2s;
}
.nav-links a:hover, .nav-links a.active {
  background: var(--navy3);
  color: var(--gold);
}
.nav-user {
  display: flex; align-items: center; gap: 1rem;
  color: var(--muted); font-size: .9rem;
}
.nav-user strong { color: var(--gold2); }

/* ── LAYOUT ── */
.container { max-width: 1100px; margin: 0 auto; padding: 2rem 1.5rem; }
.page-title {
  font-size: 1.8rem; font-weight: 700;
  color: var(--gold); margin-bottom: 1.5rem;
  display: flex; align-items: center; gap: .6rem;
}

/* ── CARDS ── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.2rem;
}
.card-title { font-size: 1.1rem; font-weight: 600; color: var(--gold2); }

/* ── GRID ── */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 1.2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 1.2rem; }

/* ── AIRLINE CARDS ── */
.airline-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  position: relative;
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.airline-card:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(0,0,0,0.5); }
.airline-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--accent-color, var(--gold));
}
.airline-card .airline-name { font-size: 1.1rem; font-weight: 700; margin-bottom: .2rem; }
.airline-card .program-name { font-size: .85rem; color: var(--muted); margin-bottom: .8rem; }
.airline-card .points-val {
  font-size: 2rem; font-weight: 800;
  color: var(--gold2);
}
.airline-card .points-label { font-size: .8rem; color: var(--muted); }
.airline-card .card-actions {
  display: flex; gap: .5rem; margin-top: 1rem;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .55rem 1.2rem;
  border-radius: 8px;
  border: none; cursor: pointer;
  font-size: .9rem; font-weight: 600;
  transition: all .2s;
}
.btn-primary { background: var(--gold); color: var(--navy); }
.btn-primary:hover { background: var(--gold2); }
.btn-secondary { background: var(--navy3); color: var(--white); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #c0392b; }
.btn-success { background: var(--success); color: #fff; }
.btn-sm { padding: .35rem .8rem; font-size: .82rem; }

/* ── FORMS ── */
.form-group { margin-bottom: 1.1rem; }
label { display: block; font-size: .88rem; color: var(--muted); margin-bottom: .4rem; }
input, select, textarea {
  width: 100%;
  background: var(--navy3);
  border: 1px solid var(--border);
  color: var(--white);
  padding: .65rem 1rem;
  border-radius: 8px;
  font-size: .95rem;
  outline: none;
  transition: border-color .2s;
}
input:focus, select:focus { border-color: var(--gold); }
select option { background: var(--navy2); }

/* ── ALERTS ── */
.alert {
  padding: .8rem 1.2rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: .9rem;
}
.alert-error   { background: rgba(224,92,92,.15); border: 1px solid var(--danger); color: #f99; }
.alert-success { background: rgba(76,175,130,.15); border: 1px solid var(--success); color: #8ef5c8; }
.alert-info    { background: rgba(74,144,217,.15); border: 1px solid #4a90d9; color: #9ecfff; }

/* ── TABLE ── */
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left; padding: .8rem 1rem;
  background: var(--navy3);
  color: var(--gold2); font-size: .85rem; text-transform: uppercase; letter-spacing: .05em;
}
td { padding: .75rem 1rem; border-bottom: 1px solid var(--border); font-size: .92rem; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,.03); }
.badge {
  display: inline-block; padding: .2rem .6rem;
  border-radius: 99px; font-size: .78rem; font-weight: 600;
}
.badge-positive { background: rgba(76,175,130,.2); color: var(--success); }
.badge-negative { background: rgba(224,92,92,.2);  color: var(--danger); }

/* ── LOGIN PAGE ── */
.login-wrap {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at 60% 40%, #1b2d42 0%, #0d1b2a 70%);
}
.login-box {
  width: 100%; max-width: 420px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2.5rem;
  box-shadow: 0 8px 48px rgba(0,0,0,0.6);
}
.login-logo {
  text-align: center; margin-bottom: 2rem;
  font-size: 3rem;
}
.login-title { text-align: center; font-size: 1.5rem; font-weight: 700; color: var(--gold); margin-bottom: .3rem; }
.login-sub   { text-align: center; color: var(--muted); font-size: .88rem; margin-bottom: 1.8rem; }

/* ── FLIGHT FINDER ── */
.flight-form {
  display: flex; gap: 1rem; align-items: flex-end; flex-wrap: wrap;
}
.flight-form .form-group { flex: 1; min-width: 140px; margin-bottom: 0; }
.route-result {
  display: flex; align-items: center; gap: .5rem;
  font-size: 1.1rem; font-weight: 700; color: var(--gold);
  margin-bottom: 1rem;
}
.rec-card {
  background: var(--navy3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: .8rem;
  transition: border-color .2s;
}
.rec-card.best { border-color: var(--gold); }
.rec-card .badge-best {
  background: var(--gold); color: var(--navy);
  padding: .2rem .7rem; border-radius: 99px; font-size: .78rem; font-weight: 700;
}
.rec-points { font-size: 1.4rem; font-weight: 800; color: var(--gold2); }

/* ── STAT BOXES ── */
.stat-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.5rem;
  text-align: center;
}
.stat-box .stat-val { font-size: 2.2rem; font-weight: 800; color: var(--gold2); }
.stat-box .stat-lbl { font-size: .82rem; color: var(--muted); margin-top: .2rem; }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  nav { padding: 0 1rem; }
  .nav-links { gap: .8rem; }
  .container { padding: 1rem; }
  .page-title { font-size: 1.4rem; }
}