/* ============================================================
   VoilaMed Design System — Shared Variables & Base Components
   Modern Healthcare SaaS + Clinically Trustworthy
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Backgrounds */
  --bg: #f8fafc;
  --bg-secondary: #f1f5f9;
  --card-bg: #ffffff;

  /* Text */
  --fg: #0f172a;
  --fg-secondary: #475569;

  /* Brand */
  --accent: #1a8a8a;
  --accent-hover: #157373;
  --accent-light: #d1f3ef;
  --accent-glow: rgba(26, 138, 138, 0.15);

  /* Blue Support */
  --blue: #2563eb;
  --blue-light: #dbeafe;

  /* UI */
  --border: #e2e8f0;
  --input-bg: #ffffff;
  --muted: #94a3b8;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);

  /* States */
  --success: #16a34a;
  --success-light: #dcfce7;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --error: #ef4444;
  --error-light: #fee2e2;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ─── Reset & Base ────────────────────────────────────────── */

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--fg);
  background: var(--bg);
  font-size: 1rem;
  line-height: 1.6;
  font-weight: 400;
  min-height: 100vh;
}

/* ─── Typography ──────────────────────────────────────────── */

h1, h2, h3, h4, h5, h6 {
  color: var(--fg);
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
}

p {
  color: var(--fg-secondary);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-hover);
}

/* ─── Buttons ─────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 1px 3px rgba(26, 138, 138, 0.3);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 12px rgba(26, 138, 138, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1.5px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.btn-ghost {
  background: transparent;
  color: var(--fg-secondary);
  padding: 8px 16px;
}

.btn-ghost:hover {
  color: var(--accent);
  background: var(--accent-light);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.0625rem;
}

/* ─── Cards ───────────────────────────────────────────────── */

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-elevated {
  box-shadow: var(--shadow-md);
}

.card-elevated:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* ─── Inputs ──────────────────────────────────────────────── */

.input {
  width: 100%;
  padding: 12px 16px;
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--fg);
  background: var(--input-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
}

.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.input::placeholder {
  color: var(--muted);
}

select.input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%2394a3b8' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

/* ─── Labels & Badges ────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}

.badge-accent {
  background: var(--accent-light);
  color: var(--accent);
}

.badge-success {
  background: var(--success-light);
  color: var(--success);
}

.badge-warning {
  background: var(--warning-light);
  color: var(--warning);
}

.badge-blue {
  background: var(--blue-light);
  color: var(--blue);
}

/* ─── Tags ────────────────────────────────────────────────── */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--fg);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}

.tag-removable {
  cursor: default;
}

.tag-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--muted);
  transition: all var(--transition-fast);
  line-height: 1;
}

.tag-remove:hover {
  background: var(--error-light);
  color: var(--error);
}

/* ─── Container ───────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-sm {
  max-width: 720px;
}

.container-lg {
  max-width: 1400px;
}

/* ─── Section ─────────────────────────────────────────────── */

.section {
  padding: clamp(3rem, 6vw, 6rem) 0;
}

.section-alt {
  background: var(--bg-secondary);
}

/* ─── Animations ──────────────────────────────────────────── */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* ─── Utility ─────────────────────────────────────────────── */

.hidden { display: none !important; }
.text-center { text-align: center; }
.text-muted { color: var(--muted); }
.text-accent { color: var(--accent); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.grid { display: grid; }

/* ─── Responsive ──────────────────────────────────────────── */

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: clamp(2rem, 4vw, 3rem) 0;
  }
}