/* Health Tracker — professional business UI */
:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --text: #1a2332;
  --muted: #5c6b7a;
  --border: #e2e8f0;
  --primary: #0f766e;
  --primary-dark: #0d5c56;
  --accent: #0ea5e9;
  --danger: #dc2626;
  --success: #059669;
  --warning: #d97706;
  --sidebar: #0f172a;
  --sidebar-hover: #1e293b;
  --radius: 12px;
  --shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

a {
  color: var(--primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.container {
  width: min(1180px, 92vw);
  margin: 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.15rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.95rem;
  text-decoration: none;
}
.btn:hover {
  text-decoration: none;
  filter: brightness(1.03);
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}
.btn-outline {
  background: #fff;
  border-color: var(--border);
  color: var(--text);
}
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.35rem 1.5rem;
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  gap: 1rem;
}
.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.stat {
  padding: 1rem 1.15rem;
  border-radius: var(--radius);
  background: linear-gradient(145deg, #ffffff, #f8fafc);
  border: 1px solid var(--border);
}
.stat h3 {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.stat .num {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
table.data-table th,
table.data-table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
table.data-table th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.form-row {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}
.form-row.two {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--muted);
}
input,
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  font: inherit;
  background: #fff;
}
textarea {
  min-height: 100px;
  resize: vertical;
}

.flash-wrap {
  max-width: 1180px;
  margin: 0.75rem auto;
  padding: 0 4vw;
}
.alert {
  padding: 0.75rem 1rem;
  border-radius: 10px;
  margin-bottom: 0.5rem;
  font-size: 0.92rem;
}
.alert-success {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}
.alert-danger {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}
.alert-warning {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}
.alert-info {
  background: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

/* Landing */
.landing-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 4vw;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text);
}
.brand span {
  color: var(--primary);
}
.hero {
  padding: 4rem 4vw 3rem;
  background: radial-gradient(1200px 500px at 10% -10%, rgba(14, 165, 233, 0.15), transparent),
    radial-gradient(900px 400px at 90% 0%, rgba(15, 118, 110, 0.18), transparent), var(--bg);
}
.hero-inner {
  width: min(1100px, 92vw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 2.85rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
}
.hero p {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 1.5rem;
}
.hero-card {
  background: var(--surface);
  border-radius: 20px;
  padding: 1.75rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.feature-section {
  padding: 3rem 4vw;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}
.feature {
  padding: 1.25rem;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--border);
}
.feature h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}
.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.site-footer {
  padding: 2rem 4vw;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  background: #fff;
}

/* User shell */
.user-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
.user-nav {
  background: linear-gradient(180deg, #0f172a, #0b1224);
  color: #e2e8f0;
  padding: 1.5rem 1rem;
}
.user-nav .brand {
  color: #fff;
  margin-bottom: 1.5rem;
  padding: 0 0.5rem;
}
.user-nav a {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: 10px;
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.92rem;
  margin-bottom: 0.2rem;
}
.user-nav a:hover,
.user-nav a.active {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.user-main {
  padding: 1.5rem 1.75rem 2.5rem;
}
.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.page-head h1 {
  margin: 0;
  font-size: 1.45rem;
  letter-spacing: -0.02em;
}

/* Admin shell */
.admin-shell {
  display: grid;
  grid-template-columns: 270px 1fr;
  min-height: 100vh;
}
.admin-sidebar {
  background: var(--sidebar);
  color: #e2e8f0;
  padding: 1.5rem 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.admin-sidebar .brand {
  color: #fff;
  margin-bottom: 0.35rem;
}
.admin-sidebar .sub {
  font-size: 0.8rem;
  color: #94a3b8;
  margin-bottom: 1.25rem;
  padding: 0 0.5rem;
}
.admin-sidebar .section {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #64748b;
  margin: 1rem 0.5rem 0.4rem;
}
.admin-sidebar a {
  display: block;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.9rem;
}
.admin-sidebar a:hover,
.admin-sidebar a.active {
  background: var(--sidebar-hover);
  color: #fff;
}
.admin-main {
  padding: 1.5rem 1.75rem 2.5rem;
}

.auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
  background: radial-gradient(800px 400px at 20% 0%, rgba(14, 165, 233, 0.12), transparent),
    radial-gradient(700px 350px at 80% 10%, rgba(15, 118, 110, 0.15), transparent), var(--bg);
}
.auth-card {
  width: min(460px, 100%);
  background: #fff;
  border-radius: 18px;
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.auth-card h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
}
.auth-card .hint {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.pill {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  background: #ecfeff;
  color: #0e7490;
}

@media (max-width: 960px) {
  .user-shell,
  .admin-shell {
    grid-template-columns: 1fr;
  }
  .user-nav,
  .admin-sidebar {
    position: relative;
    height: auto;
  }
}