/* ============================================
   RPet Health — Base Styles & Reset
   ============================================ */

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

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

html {
  font-size: 16px;
  touch-action: manipulation;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background-color: var(--bg-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
  -webkit-user-select: none;
  overscroll-behavior: none;
  overflow: hidden;
  min-height: 100vh;
  min-height: 100dvh;
}

input, textarea, select, [contenteditable] {
  user-select: text;
  -webkit-user-select: text;
}

/* Prevent iOS zoom on inputs */
input, textarea, select {
  font-size: 16px;
}

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

img {
  max-width: 100%;
  display: block;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
  outline: none;
}

ul, ol {
  list-style: none;
}

/* ---- App Shell ---- */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  position: relative;
  background: var(--bg-main);
  overflow: hidden;
}

/* For desktop: center the app and add shadow */
@media (min-width: 481px) {
  body {
    background-color: #E2E8F0;
  }
  .app {
    box-shadow: var(--shadow-xl);
    border-left: 1px solid var(--border-light);
    border-right: 1px solid var(--border-light);
  }
}

.app-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  position: relative;
  scroll-behavior: smooth;
}

/* Custom scrollbar */
.app-content::-webkit-scrollbar {
  width: 3px;
}
.app-content::-webkit-scrollbar-track {
  background: transparent;
}
.app-content::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

.text-sm { font-size: var(--fs-sm); }
.text-xs { font-size: var(--fs-xs); }
.text-lg { font-size: var(--fs-lg); }

/* ---- Utility Classes ---- */
.text-center { text-align: center; }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-primary-color { color: var(--primary); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-bold { font-weight: var(--fw-semibold); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-1 { flex: 1; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.gap-1 { gap: var(--sp-1); }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); }
.gap-6 { gap: var(--sp-6); }

.p-2 { padding: var(--sp-2); }
.p-3 { padding: var(--sp-3); }
.p-4 { padding: var(--sp-4); }
.p-6 { padding: var(--sp-6); }

.px-4 { padding-left: var(--sp-4); padding-right: var(--sp-4); }
.px-6 { padding-left: var(--sp-6); padding-right: var(--sp-6); }
.py-2 { padding-top: var(--sp-2); padding-bottom: var(--sp-2); }
.py-4 { padding-top: var(--sp-4); padding-bottom: var(--sp-4); }

.mt-1 { margin-top: var(--sp-1); }
.mt-2 { margin-top: var(--sp-2); }
.mt-3 { margin-top: var(--sp-3); }
.mt-4 { margin-top: var(--sp-4); }
.mt-6 { margin-top: var(--sp-6); }
.mb-2 { margin-bottom: var(--sp-2); }
.mb-3 { margin-bottom: var(--sp-3); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-6 { margin-bottom: var(--sp-6); }

.w-full { width: 100%; }
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* ---- Animations ---- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

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

@keyframes slideInRight {
  from { transform: translateX(24px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes bounceIn {
  0% { transform: scale(0.3); opacity: 0; }
  50% { transform: scale(1.05); }
  70% { transform: scale(0.95); }
  100% { transform: scale(1); opacity: 1; }
}

.animate-fade-in { animation: fadeIn var(--duration-normal) var(--ease-out); }
.animate-fade-in-up { animation: fadeInUp var(--duration-normal) var(--ease-out); }
.animate-slide-up { animation: slideUp var(--duration-normal) var(--ease-out); }
.animate-scale-in { animation: scaleIn var(--duration-normal) var(--ease-spring); }