/* ========================================
   HELIA — Global Styles
   Medical booking platform
   Aesthetic: Clinical warmth — refined, trustworthy
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,500;0,9..144,700;1,9..144,400&display=swap');

:root {
  /* Core palette */
  --slate-50:  #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  /* Brand — teal/emerald (medical trust) */
  --brand-50:  #f0fdfa;
  --brand-100: #ccfbf1;
  --brand-200: #99f6e4;
  --brand-300: #5eead4;
  --brand-400: #2dd4bf;
  --brand-500: #14b8a6;
  --brand-600: #0d9488;
  --brand-700: #0f766e;
  --brand-800: #115e59;
  --brand-900: #134e4a;

  /* Accent — warm amber for CTAs */
  --accent-400: #fbbf24;
  --accent-500: #f59e0b;

  /* Semantic */
  --error:   #ef4444;
  --success: #22c55e;
  --warning: #f59e0b;

  /* Surfaces */
  --bg-primary:   var(--slate-50);
  --bg-card:      #ffffff;
  --bg-input:     #ffffff;
  --border-color: var(--slate-200);

  /* Typography */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'DM Sans', -apple-system, sans-serif;

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 16px 48px rgba(15, 23, 42, 0.15);

  /* Page background (slightly off-white for contrast with cards) */
  --bg-page: var(--slate-50);
  --shadow-lg: 0 8px 30px rgba(15, 23, 42, 0.08);
  --shadow-xl: 0 16px 50px rgba(15, 23, 42, 0.10);

  /* Page background */
  --bg-page: var(--slate-50);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--slate-800);
  background: var(--bg-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.65rem 1.5rem; border: none; border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
  cursor: pointer; transition: all 0.2s; text-decoration: none; width: 100%;
}
.btn-primary { background: var(--brand-600); color: #fff; }
.btn-primary:hover { background: var(--brand-700); }
.btn-outline { background: transparent; color: var(--slate-700); border: 1px solid var(--border-color); }
.btn-outline:hover { background: var(--slate-50); border-color: var(--slate-300); }

/* ---- Auth screens ---- */
.auth-container {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: var(--space-lg); background: var(--bg-page);
}
.auth-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: var(--space-2xl);
  box-shadow: var(--shadow-lg); width: 100%; max-width: 420px;
}
.auth-header { text-align: center; margin-bottom: var(--space-xl); }
.logo-big { font-family: var(--font-display); font-size: 2rem; font-weight: 700; color: var(--slate-900); }
.logo-big span { color: var(--brand-600); }
.auth-header p { color: var(--slate-500); margin-top: var(--space-xs); }
.auth-footer { text-align: center; margin-top: var(--space-lg); font-size: 0.9rem; color: var(--slate-500); }
.auth-footer a { color: var(--brand-600); text-decoration: none; font-weight: 600; }
.auth-footer a:hover { text-decoration: underline; }

.form-group { margin-bottom: var(--space-md); }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--slate-700); margin-bottom: var(--space-xs); }
.form-group input, .form-group select {
  width: 100%; padding: 0.65rem 0.85rem; border: 1px solid var(--border-color);
  border-radius: var(--radius-sm); font-size: 0.9rem; font-family: var(--font-body);
  background: var(--bg-input); transition: border-color 0.15s;
}
.form-group input:focus, .form-group select:focus {
  outline: none; border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(20,184,166,0.12);
}
.form-error { color: var(--error); font-size: 0.85rem; margin: var(--space-sm) 0; padding: var(--space-sm); background: #fef2f2; border-radius: var(--radius-sm); }

/* ---- Placeholder views ---- */
.placeholder-view { text-align: center; padding: var(--space-3xl) var(--space-xl); color: var(--slate-400); }
.placeholder-icon { font-size: 3rem; margin-bottom: var(--space-md); }
.placeholder-view h2 { color: var(--slate-600); margin-bottom: var(--space-sm); font-family: var(--font-display); }
.placeholder-view a { color: var(--brand-600); text-decoration: none; }

/* ---- Spinner ---- */
.spinner { width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin .6s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Sidebar toggle (mobile) ---- */
.sidebar-toggle { display: none; background: none; border: none; font-size: 1.3rem; cursor: pointer; color: var(--slate-700); padding: 0.25rem; }
.topbar-left { display: flex; align-items: center; gap: var(--space-sm); }
@media (max-width: 768px) {
  .sidebar-toggle { display: block; }
  .sidebar.open { display: block !important; position: fixed; top: 60px; left: 0; bottom: 0; width: 240px; z-index: 100; }
}