@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:wght@300;400;500;600;700&display=swap');

/* =============================================
   Caro Health — Shared Design System
   ============================================= */

:root {
  --cream: #F7F3EE;
  --sage: #7A9E7E;
  --sage-light: #E8F4EA;
  --terracotta: #C97B5A;
  --terracotta-light: #FDF0E8;
  --charcoal: #2C2C2C;
  --soft-gray: #E8E4DF;
  --gold: #D4A853;
  --gold-light: #FDF8EC;
  --white: #FFFFFF;
  --danger: #D94F4F;
  --danger-light: #FDE8E8;
}

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

body {
  background: var(--cream);
  font-family: 'DM Sans', sans-serif;
  color: var(--charcoal);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }

/* =============================================
   Auth Page (Login / Register)
   ============================================= */

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px 16px;
}

.auth-card {
  background: var(--white);
  border-radius: 24px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.08);
  width: 100%;
  max-width: 420px;
  overflow: hidden;
}

.auth-header {
  text-align: center;
  padding: 40px 32px 20px;
}

.auth-header .brand-eyebrow {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--terracotta);
  font-weight: 500;
  margin-bottom: 8px;
}

.auth-header h1 {
  font-family: 'DM Serif Display', serif;
  font-size: 36px;
  line-height: 1.1;
  color: var(--charcoal);
}

.auth-header h1 em {
  font-style: italic;
  color: var(--sage);
}

.auth-header .auth-subtitle {
  font-size: 14px;
  color: #999;
  margin-top: 8px;
  font-weight: 300;
}

/* Tab switcher */
.auth-tabs {
  display: flex;
  margin: 0 32px;
  border-bottom: 2px solid var(--soft-gray);
}

.auth-tab {
  flex: 1;
  padding: 12px 0;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #bbb;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all 0.2s;
}

.auth-tab.active {
  color: var(--terracotta);
  border-bottom-color: var(--terracotta);
}

.auth-tab:hover:not(.active) {
  color: #888;
}

/* Forms */
.auth-form {
  padding: 28px 32px 36px;
  display: none;
}

.auth-form.active {
  display: block;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #aaa;
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--soft-gray);
  border-radius: 12px;
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  color: var(--charcoal);
  outline: none;
  transition: border-color 0.2s;
  background: var(--cream);
}

.form-group input:focus {
  border-color: var(--sage);
  background: var(--white);
}

.form-group input::placeholder {
  color: #ccc;
}

.auth-btn {
  width: 100%;
  padding: 14px;
  background: var(--charcoal);
  color: white;
  border: none;
  border-radius: 99px;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 8px;
}

.auth-btn:hover {
  background: var(--terracotta);
}

.auth-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-error {
  background: var(--danger-light);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
  text-align: center;
}

.auth-error.visible {
  display: block;
}

/* =============================================
   Dashboard
   ============================================= */

.dashboard-page {
  padding: 24px 16px 48px;
  max-width: 900px;
  margin: 0 auto;
}

.dashboard-topbar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: 12px;
}

.logout-btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #bbb;
  background: none;
  border: 2px solid var(--soft-gray);
  border-radius: 99px;
  padding: 8px 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.logout-btn:hover {
  color: var(--terracotta);
  border-color: var(--terracotta);
}

.dashboard-header {
  text-align: center;
  margin-bottom: 40px;
}

.dashboard-header .brand-eyebrow {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--terracotta);
  font-weight: 500;
  margin-bottom: 8px;
}

.dashboard-header h1 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(36px, 8vw, 56px);
  line-height: 1.1;
  color: var(--charcoal);
}

.dashboard-header h1 em {
  font-style: italic;
  color: var(--sage);
}

.dashboard-header .welcome-text {
  font-size: 15px;
  color: #999;
  margin-top: 12px;
  font-weight: 300;
}

.dashboard-header .welcome-text strong {
  color: var(--charcoal);
  font-weight: 500;
}

/* Tool cards grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.tool-card {
  background: var(--white);
  border-radius: 20px;
  padding: 28px 24px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  cursor: pointer;
  transition: all 0.25s ease;
  border: 2px solid transparent;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.1);
  border-color: var(--sage);
}

.tool-card .tool-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 16px;
}

.tool-card .tool-icon.sage { background: var(--sage-light); }
.tool-card .tool-icon.terracotta { background: var(--terracotta-light); }
.tool-card .tool-icon.gold { background: var(--gold-light); }

.tool-card h3 {
  font-family: 'DM Serif Display', serif;
  font-size: 20px;
  margin-bottom: 6px;
}

.tool-card p {
  font-size: 13px;
  color: #999;
  line-height: 1.5;
  flex-grow: 1;
}

.tool-card .tool-cta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--terracotta);
}

.tool-card .tool-cta .arrow {
  transition: transform 0.2s;
}

.tool-card:hover .tool-cta .arrow {
  transform: translateX(4px);
}

/* Locked / Coming soon cards */
.tool-card.locked {
  opacity: 0.45;
  cursor: default;
  pointer-events: none;
}

.tool-card.locked .tool-cta {
  color: #ccc;
}

/* =============================================
   Tracker Page — Back nav
   ============================================= */

.tracker-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 0;
  max-width: 600px;
  margin: 0 auto;
}

.back-btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #bbb;
  background: none;
  border: 2px solid var(--soft-gray);
  border-radius: 99px;
  padding: 8px 20px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.back-btn:hover {
  color: var(--terracotta);
  border-color: var(--terracotta);
}

/* Loading overlay */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--cream);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: opacity 0.3s;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--soft-gray);
  border-top-color: var(--terracotta);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* =============================================
   Responsive
   ============================================= */

@media (max-width: 480px) {
  .auth-card {
    border-radius: 16px;
  }

  .auth-header {
    padding: 28px 20px 16px;
  }

  .auth-tabs {
    margin: 0 20px;
  }

  .auth-form {
    padding: 20px 20px 28px;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }
}