/* LeanBills App Styles */

/* ── Design Tokens ───────────────────────────────────── */
:root {
  --bg: #faf9f6;
  --bg-alt: #f4f1eb;
  --fg: #1c1a17;
  --fg-muted: #6b6560;
  --green: #1a3d2e;
  --green-light: #2d5c47;
  --amber: #f0b429;
  --amber-dim: #f0b42922;
  --border: #e5e0d8;
  --radius: 14px;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --red: #c0392b;
  --red-bg: #fdf0ee;
}

/* ── Base ───────────────────────────────────────────── */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ────────────────────────────────────────────── */
.nav {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: -0.02em;
  text-decoration: none;
}
.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
}
.nav-links a {
  font-size: 0.9rem;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--fg); }

/* ── Layout ─────────────────────────────────────────── */
.page {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 32px 80px;
}

/* ── Typography ────────────────────────────────────── */
.page-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.page-subtitle {
  color: var(--fg-muted);
  font-size: 1rem;
  margin-bottom: 40px;
}

/* ── Upload Card ───────────────────────────────────── */
.upload-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.upload-card:hover, .upload-card.drag-over {
  border-color: var(--green-light);
  box-shadow: 0 4px 24px rgba(26,61,46,0.1);
}
.upload-card input[type="file"] { display: none; }
.upload-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--bg-alt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.upload-icon svg { width: 28px; height: 28px; stroke: var(--green); }
.upload-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--fg);
}
.upload-hint {
  font-size: 0.875rem;
  color: var(--fg-muted);
}
.upload-preview {
  display: none;
  margin-top: 24px;
  border-radius: 12px;
  overflow: hidden;
  max-height: 300px;
}
.upload-preview img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.upload-preview.visible { display: block; }

/* ── Bill Type Tabs ────────────────────────────────── */
.type-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.type-tab {
  padding: 8px 20px;
  border-radius: 100px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--fg-muted);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.15s;
}
.type-tab.active {
  background: var(--green);
  color: #fff;
  border-color: var(--green);
}
.type-tab:hover:not(.active) { border-color: var(--green-light); color: var(--green); }

/* ── Analyze Button ────────────────────────────────── */
.btn-analyze {
  width: 100%;
  padding: 16px;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  margin-top: 24px;
}
.btn-analyze:hover { background: var(--green-light); }
.btn-analyze:disabled { background: var(--border); color: var(--fg-muted); cursor: not-allowed; }

/* ── Skeleton Loader ───────────────────────────────── */
.skeleton-wrap {
  display: none;
  animation: fadeIn 0.3s ease;
}
.skeleton-wrap.active { display: block; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.skeleton-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  margin-bottom: 20px;
}
.skeleton-card.skeleton-savings {
  border-color: var(--amber);
  background: var(--amber-dim);
}

.skeleton-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.skeleton-card-inner {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.skeleton-advice {
  background: var(--bg);
  border-radius: 12px;
  padding: 20px;
  border-left: 3px solid var(--green);
  margin-bottom: 20px;
}

/* Skeleton shimmer bars */
.skeleton-bar {
  background: linear-gradient(
    90deg,
    var(--bg-alt) 0%,
    #e8e3da 40%,
    var(--bg-alt) 80%
  );
  background-size: 200% 100%;
  border-radius: 8px;
  animation: shimmer 1.5s ease-in-out infinite;
}
.skeleton-bar.short {
  border-radius: 100px;
  height: 12px;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Results ───────────────────────────────────────── */
.results {
  display: none;
}
.results.visible { display: block; }

.result-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  margin-bottom: 20px;
}
.result-card.highlight {
  border-color: var(--amber);
  background: var(--amber-dim);
}
.result-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 4px;
}
.result-value {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.03em;
}
.result-value.large { font-size: 2.8rem; }
.result-value.savings { color: var(--green); }
.result-value.warning { color: var(--red); }
.result-sub {
  font-size: 0.875rem;
  color: var(--fg-muted);
  margin-top: 4px;
}
.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}
.result-metric {
  background: var(--bg);
  border-radius: 12px;
  padding: 16px;
}
.result-metric .result-value { font-size: 1.4rem; }
.advice-box {
  background: var(--bg);
  border-radius: 12px;
  padding: 20px;
  margin-top: 20px;
  border-left: 3px solid var(--green);
}
.advice-box p { color: var(--fg); font-size: 0.95rem; line-height: 1.6; }

/* ── Vendor / Bill info ────────────────────────────── */
.bill-info {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.badge {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.badge-electric { background: #e8f5e9; color: #1a3d2e; }
.badge-gas { background: #fff3e0; color: #7d4e0a; }
.badge-internet { background: #e3f2fd; color: #0d47a1; }
.badge-mobile { background: #f3e5f5; color: #4a148c; }
.badge-insurance { background: #e8f5e9; color: #1a3d2e; border: 1px solid #a5d6a7; }
.badge-unknown { background: var(--bg-alt); color: var(--fg-muted); }

.vendor-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

/* ── Analyze History ──────────────────────────────── */
.history-section { margin-top: 48px; }
.history-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
}
.history-list { display: flex; flex-direction: column; gap: 10px; }
.history-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  transition: border-color 0.15s;
}
.history-item:hover { border-color: var(--green-light); }
.history-item-info { flex: 1; }
.history-item-vendor { font-weight: 600; font-size: 0.9rem; }
.history-item-meta { font-size: 0.8rem; color: var(--fg-muted); }
.history-item-savings { font-weight: 700; color: var(--green); font-size: 0.9rem; }
.history-item-date { font-size: 0.75rem; color: var(--fg-muted); }

/* ── Error ──────────────────────────────────────────── */
.error-msg {
  display: none;
  background: var(--red-bg);
  border: 1px solid var(--red);
  border-radius: 10px;
  padding: 14px 16px;
  color: var(--red);
  font-size: 0.9rem;
  margin-top: 16px;
}
.error-msg.visible { display: block; }

/* ── 404 ───────────────────────────────────────────── */
.page-404 {
  text-align: center;
  padding: 80px 32px;
}
.page-404 h1 { font-family: var(--font-serif); font-size: 4rem; color: var(--border); margin-bottom: 16px; }
.page-404 p { color: var(--fg-muted); margin-bottom: 32px; }
.page-404 a { color: var(--green); text-decoration: none; font-weight: 600; }