/* ═══════════════════════════════════════════════════════════════════════════
   LandveX Finance — Core Styles (Mobile-First)
   ═══════════════════════════════════════════════════════════════════════════ */

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

:root {
  --bg: #F8F7F5;
  --card: #FFFFFF;
  --border: #EBEBEB;
  --text: #111111;
  --text-2: #666666;
  --text-3: #999999;
  --accent: #1a1a1a;
  --amber: #C8763A;
  --green: #16A34A;
  --red: #DC2626;
  --blue: #2563EB;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.04);
  --r: 12px;
  --font: 'IBM Plex Sans', -apple-system, Arial, sans-serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

html { font-family: var(--font); font-size: 14px; background: var(--bg); color: var(--text); -webkit-tap-highlight-color: transparent; }
body { min-height: 100vh; padding-bottom: calc(80px + var(--safe-bottom)); }

/* Loading */
#loading { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; background: var(--bg); font-size: 1rem; color: var(--text-2); z-index: 9999; }
#loading::after { content: ''; width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; margin-left: 12px; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Layout ── */
#app { max-width: 100%; margin: 0 auto; }

/* ── Topbar ── */
.topbar { position: sticky; top: 0; z-index: 100; background: var(--card); border-bottom: 1px solid var(--border); }
.topbar-main { display: flex; align-items: center; gap: 12px; padding: 0 16px; height: 56px; }
.topbar-tabs { display: flex; gap: 0; padding: 0 8px; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
.topbar-tabs::-webkit-scrollbar { display: none; }

.brand { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.brand-logo { width: 28px; height: 28px; border-radius: 7px; background: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 800; color: #fff; }
.brand-name { font-size: .95rem; font-weight: 700; }

/* ── Tabs ── */
.tab-btn { background: transparent; border: none; border-bottom: 2px solid transparent; color: var(--text-2); padding: 10px 16px; font-size: .82rem; font-weight: 500; cursor: pointer; white-space: nowrap; transition: all .15s; font-family: var(--font); }
.tab-btn:hover, .tab-btn.active { color: var(--text); border-bottom-color: var(--accent); }
.tab-btn.active { font-weight: 600; }

/* ── Cards ── */
.card { background: var(--card); border-radius: var(--r); box-shadow: var(--shadow); margin: 12px 16px; overflow: hidden; }
.card-header { display: flex; align-items: center; justify-content: space-between; padding: 16px; border-bottom: 1px solid var(--border); }
.card-title { font-size: 1rem; font-weight: 600; }
.card-body { padding: 16px; }

/* ── Tables (mobile optimized) ── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: .85rem; }
th { text-align: left; padding: 10px 12px; color: var(--text-2); font-weight: 500; font-size: .78rem; text-transform: uppercase; letter-spacing: .02em; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 12px; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }
tr:active { background: var(--navy-05); }

.num { text-align: right; font-variant-numeric: tabular-nums; font-family: 'IBM Plex Mono', monospace; }
.pos { color: var(--green); }
.neg { color: var(--red); }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 16px; border-radius: 8px; border: none; font-size: .85rem; font-weight: 600; cursor: pointer; transition: all .15s; font-family: var(--font); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:active { transform: scale(.97); }
.btn-secondary { background: var(--navy-05); color: var(--text); }
.btn-ghost { background: transparent; color: var(--text-2); }
.btn-sm { padding: 6px 12px; font-size: .78rem; }

/* ── Forms ── */
input, select, textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: .9rem; font-family: var(--font); background: var(--card); color: var(--text); outline: none; }
input:focus, select:focus { border-color: var(--accent); }
label { display: block; font-size: .78rem; font-weight: 500; color: var(--text-2); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .02em; }
.form-group { margin-bottom: 16px; }

/* ── Status ── */
.badge { display: inline-flex; align-items: center; padding: 3px 8px; border-radius: 20px; font-size: .72rem; font-weight: 600; }
.badge-posted { background: rgba(22,163,74,.1); color: var(--green); }
.badge-draft { background: rgba(200,118,58,.1); color: var(--amber); }

/* ── Bottom nav (mobile) ── */
.bottom-nav { position: fixed; bottom: 0; left: 0; right: 0; background: var(--card); border-top: 1px solid var(--border); display: flex; justify-content: space-around; padding: 8px 0 calc(8px + var(--safe-bottom)); z-index: 100; }
.nav-item { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 4px 12px; background: transparent; border: none; color: var(--text-2); font-size: .7rem; font-family: var(--font); cursor: pointer; }
.nav-item.active { color: var(--accent); }
.nav-icon { font-size: 1.3rem; }

/* ── Skeleton loading ── */
.skeleton { background: linear-gradient(90deg, var(--border) 25%, #f0f0f0 50%, var(--border) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: 4px; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Desktop (min 768px) ── */
@media (min-width: 768px) {
  #app { max-width: 1200px; margin: 0 auto; }
  .bottom-nav { display: none; }
  body { padding-bottom: 0; }
}