/*
Theme Name: UricAcid Online
Theme URI: https://www.uricacid.online
Author: UricAcid.online
Author URI: https://www.uricacid.online
Description: A free clinical uric acid and gout management information platform. Evidence-based purine food guides, diet plans, and symptom information.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: uricacid-online
Tags: health, medical, informational, clean, responsive
*/

/* ===== THEME IMPORTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=Inter:wght@400;500;600;700&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
  --primary:      #0d7c6e;
  --primary-dark: #0a5e54;
  --primary-mid:  #0f9482;
  --primary-light:#15b89e;
  --primary-xl:   #e4f5f2;
  --accent:       #c8a84b;
  --accent-light: #f5edd5;
  --dark:         #0f1f1c;
  --dark-mid:     #162e2a;
  --mid:          #2e4d47;
  --muted:        #5e7a74;
  --muted-light:  #8fa8a3;
  --bg:           #f8faf9;
  --white:        #ffffff;
  --border:       #cfe4e0;
  --border-light: #e4f0ed;
  --red:          #d94f4f;
  --r-sm:         8px;
  --r-md:         16px;
  --r-lg:         24px;
  --shadow-sm:    0 2px 12px rgba(13,124,110,0.07);
  --shadow-md:    0 8px 32px rgba(13,124,110,0.11);
  --shadow-lg:    0 24px 64px rgba(13,124,110,0.15);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', Georgia, serif;
  line-height: 1.2;
}
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-mid); }
img { max-width: 100%; height: auto; display: block; }
input, select, textarea, button {
  font-family: 'Inter', sans-serif;
}
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ===== LAYOUT ===== */
.ua-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 5%;
}
.ua-section { padding: 80px 5%; }
.ua-section-sm { padding: 48px 5%; }

/* ===== TYPOGRAPHY ===== */
.ua-eyebrow {
  font-size: 0.72rem; font-weight: 700; color: var(--primary);
  text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 10px;
  font-family: 'Inter', sans-serif;
}
.ua-title {
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  font-weight: 700; color: var(--dark); margin-bottom: 14px;
}
.ua-title em { color: var(--primary); font-style: italic; }
.ua-subtitle {
  font-size: 0.98rem; color: var(--muted); line-height: 1.75; max-width: 580px;
}
.ua-text { font-size: 0.95rem; color: var(--mid); line-height: 1.8; }
.ua-text p { margin-bottom: 16px; }
.ua-text p:last-child { margin-bottom: 0; }
.ua-text strong { color: var(--primary); font-weight: 600; }

/* ===== BADGE / PILL ===== */
.ua-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--primary-xl); border: 1px solid rgba(13,124,110,0.18);
  color: var(--primary); font-size: 0.72rem; font-weight: 700;
  padding: 5px 14px; border-radius: 100px;
  letter-spacing: 0.07em; text-transform: uppercase;
  font-family: 'Inter', sans-serif;
}

/* ===== BUTTONS ===== */
.ua-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: var(--r-sm);
  font-weight: 700; font-size: 0.9rem; cursor: pointer;
  border: none; transition: all 0.22s; text-decoration: none;
  font-family: 'Inter', sans-serif;
}
.ua-btn-primary {
  background: var(--primary); color: #fff;
}
.ua-btn-primary:hover { background: var(--primary-mid); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(13,124,110,0.3); color: #fff; }
.ua-btn-secondary {
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary);
}
.ua-btn-secondary:hover { background: var(--primary-xl); color: var(--primary); }
.ua-btn-white { background: #fff; color: var(--primary); }
.ua-btn-white:hover { background: var(--primary-xl); transform: translateY(-2px); color: var(--primary); }
.ua-btn-outline-white {
  background: transparent; color: #fff;
  border: 2px solid rgba(255,255,255,0.4);
}
.ua-btn-outline-white:hover { border-color: rgba(255,255,255,0.8); background: rgba(255,255,255,0.08); color: #fff; }

/* ===== NAVBAR ===== */
#ua-navbar {
  position: sticky; top: 0; z-index: 300;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5%; height: 68px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.ua-nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.ua-nav-logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: grid; place-items: center; font-size: 16px; flex-shrink: 0;
}
.ua-nav-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem; font-weight: 700; color: var(--dark);
}
.ua-nav-brand em { color: var(--primary); font-style: normal; }
.ua-nav-links { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.ua-nav-links a {
  font-size: 0.86rem; font-weight: 500; color: var(--mid);
  transition: color 0.2s; text-decoration: none;
}
.ua-nav-links a:hover,
.ua-nav-links a.current { color: var(--primary); font-weight: 600; }
.ua-nav-cta {
  background: var(--primary); color: #fff; border: none; cursor: pointer;
  padding: 9px 20px; border-radius: var(--r-sm);
  font-size: 0.84rem; font-weight: 600;
  transition: all 0.2s; text-decoration: none; display: inline-block;
}
.ua-nav-cta:hover { background: var(--primary-mid); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(13,124,110,0.28); color: #fff; }
.ua-hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.ua-mobile-menu {
  display: none; background: #fff; border-bottom: 1px solid var(--border);
  padding: 12px 5% 20px;
}
.ua-mobile-menu.open { display: block; }
.ua-mobile-menu a {
  display: block; padding: 12px 0; font-size: 0.95rem; font-weight: 500;
  color: var(--mid); border-bottom: 1px solid var(--border-light);
  text-decoration: none;
}
.ua-mobile-menu a:hover { color: var(--primary); }
.ua-mobile-cta {
  display: block; margin-top: 14px; text-align: center;
  background: var(--primary); color: #fff; padding: 12px;
  border-radius: var(--r-sm); font-weight: 700; text-decoration: none;
}

/* ===== TRUST BAR ===== */
.ua-trust-bar {
  background: #fff;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 14px 5%;
  display: flex; align-items: center; justify-content: center;
  gap: 28px; flex-wrap: wrap;
}
.ua-trust-item {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.78rem; font-weight: 500; color: var(--muted);
}
.ua-trust-item::before { content: '✓'; color: var(--primary); font-weight: 700; }

/* ===== HERO (shared) ===== */
.ua-hero {
  padding: 80px 5% 72px;
  background: linear-gradient(160deg, #e4f5f2 0%, #f8faf9 48%, #fef9ef 100%);
  position: relative; overflow: hidden;
}
.ua-hero::before {
  content: '';
  position: absolute; bottom: -80px; right: -80px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(13,124,110,0.07), transparent 70%);
  pointer-events: none;
}
.ua-hero::after {
  content: '';
  position: absolute; top: 40px; left: -50px;
  width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(200,168,75,0.06), transparent 70%);
  pointer-events: none;
}
.ua-breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.75rem; color: var(--muted); margin-bottom: 18px;
  position: relative; z-index: 2;
}
.ua-breadcrumb a { color: var(--primary); }
.ua-breadcrumb span { color: var(--muted-light); }

/* ===== CARDS ===== */
.ua-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 28px;
  box-shadow: var(--shadow-sm); transition: all 0.28s;
}
.ua-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(13,124,110,0.22); }
.ua-card-accent {
  position: relative; overflow: hidden;
}
.ua-card-accent::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

/* ===== GRIDS ===== */
.ua-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.ua-grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.ua-grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.ua-grid-2-1 { display: grid; grid-template-columns: 1fr 420px; gap: 56px; align-items: center; }
.ua-grid-1-2 { display: grid; grid-template-columns: 420px 1fr; gap: 56px; align-items: center; }

/* ===== CTA BAND ===== */
.ua-cta-band {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 80px 5%; text-align: center; position: relative; overflow: hidden;
}
.ua-cta-band::before {
  content: ''; position: absolute; top: -80px; right: -80px;
  width: 360px; height: 360px; border-radius: 50%;
  background: rgba(255,255,255,0.04); pointer-events: none;
}
.ua-cta-band::after {
  content: ''; position: absolute; bottom: -60px; left: -60px;
  width: 240px; height: 240px; border-radius: 50%;
  background: rgba(255,255,255,0.04); pointer-events: none;
}
.ua-cta-band h2 {
  font-size: clamp(1.9rem,3.5vw,2.8rem); color: #fff; margin-bottom: 14px;
}
.ua-cta-band p { font-size: 1rem; color: rgba(255,255,255,0.75); max-width: 500px; margin: 0 auto 36px; line-height: 1.7; }
.ua-cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== FOOTER ===== */
#ua-footer {
  background: var(--dark); color: rgba(255,255,255,0.55);
  padding: 56px 5% 28px;
}
.ua-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.ua-footer-brand p { font-size: 0.82rem; line-height: 1.7; max-width: 260px; margin-top: 12px; }
.ua-footer-col h5 { color: #fff; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 14px; }
.ua-footer-col a { display: block; font-size: 0.8rem; color: rgba(255,255,255,0.45); text-decoration: none; margin-bottom: 9px; transition: color 0.2s; }
.ua-footer-col a:hover { color: var(--primary-light); }
.ua-footer-col a.active { color: var(--primary-light); }
.ua-footer-bottom { border-top: 1px solid rgba(255,255,255,0.07); padding-top: 22px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.ua-footer-bottom p { font-size: 0.76rem; }
.ua-footer-bottom span { font-size: 0.72rem; color: rgba(255,255,255,0.25); }
.ua-footer-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; margin-bottom: 4px; }
.ua-footer-logo span { font-family: 'Playfair Display', serif; font-size: 1.1rem; color: #fff; font-weight: 700; }
.ua-footer-logo em { color: var(--primary-light); font-style: normal; }
.ua-disclaimer-box {
  background: rgba(255,255,255,0.04); border-radius: 10px;
  padding: 16px 20px; font-size: 0.74rem; line-height: 1.7;
  margin-bottom: 36px; border-left: 3px solid var(--primary);
}

/* ===== FAQ ACCORDION ===== */
.ua-faq-item {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-md); overflow: hidden; cursor: pointer; transition: border-color 0.2s;
  margin-bottom: 12px;
}
.ua-faq-item:hover { border-color: rgba(13,124,110,0.3); }
.ua-faq-item.open { border-color: rgba(13,124,110,0.4); }
.ua-faq-q {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 12px; padding: 18px 22px; font-size: 0.9rem; font-weight: 600;
  color: var(--dark); user-select: none;
}
.ua-faq-toggle {
  width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0;
  background: var(--primary-xl); color: var(--primary);
  display: grid; place-items: center; font-size: 1.1rem; font-weight: 700;
  transition: all 0.25s; margin-top: 1px;
}
.ua-faq-item.open .ua-faq-toggle { background: var(--primary); color: #fff; transform: rotate(45deg); }
.ua-faq-a {
  font-size: 0.84rem; color: var(--muted); line-height: 1.7;
  padding: 0 22px; max-height: 0; overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s;
}
.ua-faq-item.open .ua-faq-a { max-height: 500px; padding: 0 22px 18px; }

/* ===== REVEAL ANIMATION ===== */
.ua-reveal {
  opacity: 0; transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.ua-reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== FOOD LIST SPECIFIC ===== */
.food-status-safe   { background: #dcfce7; color: #166534; }
.food-status-moderate { background: #fef9c3; color: #854d0e; }
.food-status-avoid  { background: #fee2e2; color: #991b1b; }
.food-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 16px 18px; transition: all 0.22s; display: flex; align-items: center; gap: 14px;
}
.food-card:hover { box-shadow: var(--shadow-md); border-color: rgba(13,124,110,0.2); }
.food-card-icon {
  width: 46px; height: 46px; border-radius: 12px; flex-shrink: 0;
  display: grid; place-items: center; font-size: 1.3rem;
}
.food-card-tag {
  font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; padding: 3px 9px; border-radius: 100px;
}

/* ===== STAT BLOCK ===== */
.ua-stat-block {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 22px 24px;
  display: flex; align-items: center; gap: 20px;
  transition: all 0.25s;
}
.ua-stat-block:hover { transform: translateX(5px); border-color: rgba(13,124,110,0.3); box-shadow: var(--shadow-sm); }
.ua-stat-num { font-family: 'Playfair Display', serif; font-size: 2.6rem; font-weight: 700; line-height: 1; flex-shrink: 0; min-width: 80px; }

/* ===== IMPACT BAND ===== */
.ua-impact-band {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 80px 5%; position: relative; overflow: hidden;
}
.ua-impact-band::before {
  content: ''; position: absolute; top: -80px; right: -80px;
  width: 400px; height: 400px; border-radius: 50%;
  background: rgba(255,255,255,0.05); pointer-events: none;
}
.ua-impact-num { font-family: 'Playfair Display', serif; font-size: clamp(2.4rem,4vw,3.4rem); font-weight: 700; color: #fff; display: block; line-height: 1; }
.ua-impact-num sup { font-size: 0.6em; color: rgba(255,255,255,0.6); }

/* ===== DARK MISSION BAND ===== */
.ua-dark-band {
  background: linear-gradient(135deg, var(--dark), var(--dark-mid));
  padding: 80px 5%; text-align: center; position: relative; overflow: hidden;
}
.ua-dark-band::before {
  content: ''; position: absolute; top: -80px; right: -80px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(13,124,110,0.14), transparent 65%);
  pointer-events: none;
}

/* ===== AI ASSISTANT ===== */
.ua-ai-section {
  background: #fff; border-radius: var(--r-lg);
  border: 1px solid var(--border); box-shadow: 0 20px 60px rgba(13,124,110,0.1);
  padding: 40px; margin-top: 48px; position: relative; overflow: hidden;
}
.ua-ai-section::before {
  content: '🧬'; position: absolute; bottom: -10px; right: -10px;
  font-size: 8rem; opacity: 0.05; pointer-events: none;
}
.ua-ai-input {
  width: 100%; padding: 12px 16px;
  border: 1.5px solid var(--border); border-radius: var(--r-sm);
  font-size: 0.87rem; color: var(--dark);
  background: var(--bg); outline: none; transition: all 0.2s;
}
.ua-ai-input:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(13,124,110,0.08); }
.ua-ai-response {
  margin-top: 28px; padding: 28px; background: var(--bg);
  border-radius: var(--r-md); border: 1px solid var(--border);
  display: none;
}
.ua-ai-response.visible { display: block; }
.ua-ai-response-inner { font-size: 0.88rem; color: var(--mid); line-height: 1.75; }
.ua-ai-response-inner h3 { font-size: 1rem; margin: 16px 0 8px; color: var(--dark); }
.ua-ai-response-inner ul, .ua-ai-response-inner ol { padding-left: 20px; margin: 8px 0; }
.ua-ai-response-inner li { margin-bottom: 4px; }
.ua-loading-spinner {
  display: inline-block; width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff;
  border-radius: 50%; animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== GEMINI API KEY NOTICE ===== */
.ua-api-notice {
  background: var(--primary-xl); border: 1px solid rgba(13,124,110,0.2);
  border-radius: var(--r-md); padding: 14px 18px; font-size: 0.8rem;
  color: var(--mid); margin-bottom: 20px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .ua-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .ua-footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .ua-nav-links, .ua-nav-cta { display: none; }
  .ua-hamburger { display: block; }
  .ua-grid-2, .ua-grid-3, .ua-grid-2-1, .ua-grid-1-2 { grid-template-columns: 1fr; gap: 28px; }
  .ua-grid-4 { grid-template-columns: 1fr 1fr; }
  .ua-footer-grid { grid-template-columns: 1fr; }
  .ua-hero { padding: 60px 5% 52px; }
  .ua-section { padding: 56px 5%; }
  .ua-title { font-size: 1.9rem; }
}
@media (max-width: 480px) {
  .ua-grid-4 { grid-template-columns: 1fr; }
  .ua-trust-bar { gap: 14px; }
}