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

:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #1c1917;
  --muted: #6b7280;
  --accent: #92400e;
  --accent-light: #fef3c7;
  --danger: #dc2626;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100dvh;
}

/* Nav */
.app-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
  text-decoration: none;
}
.nav-user { display: flex; align-items: center; gap: .75rem; }
.nav-email { font-size: .875rem; color: var(--muted); }

/* Layout */
.app-main { max-width: 800px; margin: 0 auto; padding: 2rem 1rem; }

/* Landing page */
.landing-page { display: flex; justify-content: center; align-items: center; min-height: 60vh; }
.landing-hero { text-align: center; max-width: 480px; }
.landing-hero h1 { font-size: 3rem; font-weight: 800; color: var(--accent); margin-bottom: .75rem; }
.landing-tagline { font-size: 1.25rem; color: var(--muted); margin-bottom: 2.5rem; }
.landing-actions { display: flex; gap: 1rem; justify-content: center; align-items: center; }
.landing-actions .btn-primary { font-size: 1rem; padding: .65rem 1.5rem; }
.landing-actions .btn-link { font-size: 1rem; }

/* Auth pages */
.auth-page { display: flex; justify-content: center; padding-top: 4rem; }
.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}
.auth-card h1 { margin-bottom: 1.5rem; font-size: 1.5rem; }
.auth-link { margin-top: 1rem; font-size: .875rem; color: var(--muted); }

/* Forms */
.field { display: flex; flex-direction: column; gap: .375rem; margin-bottom: 1rem; }
label { font-size: .875rem; font-weight: 500; }
input[type="text"], input[type="email"], input[type="password"], input[type="url"] {
  padding: .5rem .75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  width: 100%;
  background: var(--surface);
  color: var(--text);
  outline: none;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }
.form-actions { display: flex; gap: .75rem; align-items: center; margin-top: 1.5rem; }
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}
.form-card h2 { margin-bottom: 1.25rem; font-size: 1.1rem; }

/* Buttons */
.btn-primary {
  padding: .5rem 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary:hover:not(:disabled) { opacity: .9; }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }
.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  font-size: .875rem;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}

/* Page header */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.page-header h1 { font-size: 1.5rem; }

/* Roaster cards */
.roaster-list { display: flex; flex-direction: column; gap: .75rem; }
.roaster-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
}
.roaster-name { font-weight: 600; margin-bottom: .25rem; }
.roaster-location { font-weight: 400; color: var(--muted); }
.roaster-site { font-size: .875rem; color: var(--accent); }

/* Nav links */
.nav-links { display: flex; gap: 1.25rem; align-items: center; margin-left: 1.5rem; }
.nav-link { font-size: .9rem; color: var(--text); text-decoration: none; font-weight: 500; }
.nav-link:hover { color: var(--accent); }

/* Forms — shared additions */
.form-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.form-row .field { flex: 1; min-width: 120px; }
select, textarea {
  padding: .5rem .75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  width: 100%;
  background: var(--surface);
  color: var(--text);
  outline: none;
  font-family: inherit;
}
select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }
textarea { resize: vertical; }
.form-card--compact { padding: 1rem; margin-top: .5rem; }

/* Bag cards */
.bag-list { display: flex; flex-direction: column; gap: .75rem; }
.bag-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.bag-card-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.25rem; }
.bag-name { font-weight: 600; margin-bottom: .2rem; }
.bag-meta { font-size: .85rem; color: var(--muted); }

/* Tube section */
.tube-section { border-top: 1px solid var(--border); padding: .75rem 1.25rem; background: var(--bg); }
.tube-section-header { display: flex; align-items: center; justify-content: flex-end; margin-bottom: .5rem; }
.tube-list { display: flex; flex-direction: column; gap: .35rem; }
.tube-row { display: flex; align-items: center; gap: .75rem; padding: .35rem 0; font-size: .875rem; }
.tube-number { font-weight: 600; color: var(--muted); min-width: 2rem; }
.tube-weight { color: var(--muted); }
.tube-status { padding: .15rem .5rem; border-radius: 9999px; font-size: .75rem; font-weight: 500; }
.tube-status--available { background: #d1fae5; color: #065f46; }
.tube-status--consumed { background: #f3f4f6; color: var(--muted); }
.tube-status--discarded { background: #fee2e2; color: #991b1b; }
.tube-actions { display: flex; gap: .5rem; margin-left: auto; }
.empty-state--sm { padding: .5rem 0; font-size: .8rem; }

/* Session cards */
.session-list { display: flex; flex-direction: column; gap: .75rem; }
.session-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; box-shadow: var(--shadow); }
.session-header { margin-bottom: .5rem; }
.session-bag { font-weight: 600; margin-bottom: .2rem; }
.session-meta { font-size: .85rem; color: var(--muted); }
.session-date { font-weight: 500; }
.session-rating { color: var(--accent); letter-spacing: .05em; }
.session-stats { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .5rem; }
.stat { font-size: .8rem; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: .15rem .5rem; color: var(--muted); }
.session-notes { font-size: .875rem; color: var(--muted); margin-top: .5rem; font-style: italic; }
.btn-link--danger { color: var(--danger); }
.muted { color: var(--muted); font-size: .875rem; }
input[type="number"] { padding: .5rem .75rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; width: 100%; background: var(--surface); color: var(--text); outline: none; }
input[type="number"]:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }
input[type="date"] { padding: .5rem .75rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; width: 100%; background: var(--surface); color: var(--text); outline: none; }
input[type="date"]:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }

/* Secondary button */
.btn-secondary {
  padding: .5rem 1rem;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}
.btn-secondary:hover:not(:disabled) { background: var(--accent-light); }
.btn-secondary:disabled { opacity: .5; cursor: not-allowed; }

/* Home page */
.home-welcome { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.25rem; }

.home-stats {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .75rem 1.25rem;
  box-shadow: var(--shadow);
  min-width: 80px;
  text-align: center;
}
.stat-number { font-size: 1.75rem; font-weight: 700; line-height: 1; color: var(--accent); }
.stat-label { font-size: .8rem; color: var(--muted); margin-top: .2rem; }

.home-actions { display: flex; gap: .75rem; margin-bottom: 2rem; }

.home-section { margin-bottom: 2rem; }
.home-section-title { font-size: 1rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: .75rem; }

/* Home bag list */
.home-bag-list { display: flex; flex-direction: column; gap: .5rem; }
.home-bag-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .65rem 1rem;
  box-shadow: var(--shadow);
}
.home-bag-name { font-weight: 600; font-size: .95rem; margin-bottom: .15rem; }
.home-bag-meta { font-size: .8rem; color: var(--muted); }

/* Recent sessions */
.recent-sessions { display: flex; flex-direction: column; gap: .5rem; }
.recent-session-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .65rem 1rem;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.recent-session-info { flex: 1; min-width: 0; }
.recent-bag { font-weight: 600; font-size: .95rem; margin-bottom: .2rem; }
.recent-roaster { font-weight: 400; color: var(--muted); }
.recent-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .35rem; font-size: .8rem; color: var(--muted); }
.recent-date { font-weight: 500; }
.brew-tag {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 9999px;
  padding: .1rem .5rem;
  font-size: .75rem;
  color: var(--muted);
}
.recent-rating { font-size: .9rem; color: var(--accent); letter-spacing: .05em; white-space: nowrap; }

/* Misc */
.error-msg { color: var(--danger); font-size: .875rem; margin-top: .5rem; }
.loading, .empty-state { color: var(--muted); font-size: .9rem; padding: 2rem 0; text-align: center; }
.empty-state--sm { color: var(--muted); font-size: .875rem; padding: .5rem 0; }
a { color: var(--accent); }