/* ==========================================
   PetHooves Common Styles — shared across all pages
   ========================================== */

/* ---- CSS Custom Properties ---- */
:root {
  --color-primary: #E87A5D;
  --color-primary-dark: #C5573B;
  --color-primary-light: #FFF0EC;
  --color-brand-green: #5B8C5A;
  --color-brand-green-dark: #3D6B3C;
  --color-brand-amber: #D4963A;
  --color-brand-blue: #5A8DB8;
  --color-accent: #F2997D;
  --color-accent-green: #8AB88A;
  --color-focus: rgba(232, 122, 93, 0.4);
  --color-gray-50: #FAF8F6;
  --color-gray-100: #F5F1ED;
  --color-gray-200: #EBE4DD;
  --color-gray-300: #D6CDC4;
  --color-gray-400: #B0A69C;
  --color-gray-500: #8C8177;
  --color-gray-600: #6B6159;
  --color-gray-700: #4A433C;
  --color-gray-800: #2D2823;
  --color-gray-900: #1A1714;
  --color-surface-card: #FFFFFF;
  --color-surface-elevated: #FDFBFA;
  --color-border: #EBE4DD;
  --color-border-subtle: #F0EAE5;
  --color-success: #5B8C5A;
  --color-warning: #D4963A;
  --color-error: #D9534F;
  --color-info: #5A8DB8;
  --shadow-xs: 0 1px 2px rgba(74, 67, 60, 0.04);
  --shadow-sm: 0 1px 3px rgba(74, 67, 60, 0.04), 0 2px 8px rgba(74, 67, 60, 0.06);
  --shadow-md: 0 2px 6px rgba(74, 67, 60, 0.06), 0 8px 24px rgba(74, 67, 60, 0.10);
  --shadow-lg: 0 4px 12px rgba(74, 67, 60, 0.06), 0 12px 40px rgba(74, 67, 60, 0.10);
  --shadow-xl: 0 8px 24px rgba(74, 67, 60, 0.10), 0 20px 64px rgba(74, 67, 60, 0.16);
  --font-display: 'Playfair Display', Georgia, 'Noto Serif SC', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --radius-btn: 10px;
  --radius-card: 16px;
  --radius-card-lg: 20px;
  --radius-modal: 20px;
  --radius-badge: 20px;
  --radius-img: 12px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-gray-600);
  background: var(--color-gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
ul { list-style: none; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ---- Navigation ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 64px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-gray-800);
}

.nav-brand i { font-size: 40px; color: var(--color-primary); }

.nav-links { display: flex; gap: 4px; }

.nav-links a {
  color: var(--color-gray-600);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-btn);
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border: none; background: transparent;
  color: var(--color-gray-600);
  border-radius: var(--radius-btn);
  font-size: 20px;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-icon-btn:hover { background: var(--color-gray-100); color: var(--color-gray-800); }

.btn-signup {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.15s ease;
}

.btn-signup:hover { background: var(--color-primary-dark); }
.btn-signup:active { transform: scale(0.97); }

.btn-login {
  background: transparent;
  color: var(--color-gray-700);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-btn);
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.btn-login:hover {
  background: var(--color-gray-100);
  border-color: var(--color-gray-300);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border: none; background: transparent;
  color: var(--color-gray-700);
  font-size: 24px;
}

@media (max-width: 767px) {
  .nav-links, .btn-signup, .btn-login { display: none; }
  .menu-toggle { display: flex; }
}