/* =========================================
   AI Health Assistant — Global Stylesheet
   Palette: Deep teal, soft arctic white, warm slate, alert amber
   Typography: 'DM Sans' (utility) + 'Playfair Display' (display)
   ========================================= */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600;700&family=Playfair+Display:wght@600;700&display=swap');

/* --- CSS Variables / Design Tokens --- */
:root {
  --teal-900: #0a2e35;
  --teal-700: #0e4d5c;
  --teal-500: #1a7a8a;
  --teal-300: #4fb3c4;
  --teal-100: #d0eef3;
  --teal-50:  #eaf7fa;

  --slate-900: #1c2b35;
  --slate-600: #4a6274;
  --slate-400: #8aa0ae;
  --slate-200: #d4dfe6;
  --slate-100: #eef2f5;

  --amber-500: #e8a020;
  --amber-100: #fef3d9;

  --red-500: #d94f4f;
  --red-100: #fde8e8;

  --green-500: #3a9e72;
  --green-100: #d8f4e9;

  --white: #ffffff;
  --body-bg: #f4f8fa;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 4px rgba(10,46,53,0.08);
  --shadow-md: 0 4px 16px rgba(10,46,53,0.12);
  --shadow-lg: 0 8px 32px rgba(10,46,53,0.16);

  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--body-bg);
  color: var(--slate-900);
  line-height: 1.0;
  min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- Typography Scale --- */
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 2.3rem); }
h2 { font-size: clamp(1.0rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; font-family: var(--font-body); font-weight: 600; }
p  { color: var(--slate-600); }

/* =========================================
   NAVIGATION
   ========================================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--slate-200);
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--teal-700);
  white-space: nowrap;
}
.nav-logo .logo-icon {
  width: 36px; height: 36px;
  background: var(--teal-700);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 1.5rem;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--slate-600);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--teal-500); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Hamburger (mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--slate-900);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--white);
  border-top: 1px solid var(--slate-200);
  padding: 12px 24px 20px;
}
.mobile-menu a, .mobile-menu button {
  padding: 12px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--slate-700);
  border-bottom: 1px solid var(--slate-100);
  text-align: left;
  background: none; border-left: none; border-right: none; border-top: none;
  cursor: pointer;
  width: 100%;
}
.mobile-menu.open { display: flex; }

/* Welcome banner in nav */
.nav-welcome {
  font-size: 0.85rem;
  color: var(--teal-700);
  font-weight: 600;
  background: var(--teal-50);
  padding: 6px 12px;
  border-radius: 20px;
  white-space: nowrap;
}

/* =========================================
   BUTTONS
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  text-align: center;
  justify-content: center;
}
.btn-primary {
  background: var(--teal-700);
  color: var(--white);
  border-color: var(--teal-700);
}
.btn-primary:hover {
  background: var(--teal-900);
  border-color: var(--teal-900);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
} 
.btn-outline {
  background: transparent;
  color: var(--teal-700);
  border-color: var(--teal-700);
}
.btn-outline:hover {
  background: var(--teal-700);
  color: var(--white);
}
.btn-ghost {
  background: transparent;
  color: var(--slate-600);
  border-color: var(--slate-200);
}
.btn-ghost:hover { background: var(--slate-100); color: var(--slate-900); }

.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: var(--radius-md); }
.btn-sm { padding: 7px 5px; font-size: 0.82rem; }
.btn-full { width: 100%; }
.btn-danger { background: var(--red-500); border-color: var(--red-500); color: white; }
.btn-danger:hover { background: #b83c3c; border-color: #b83c3c; }

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
  background: linear-gradient(135deg, var(--teal-900) 0%, var(--teal-700) 60%, var(--teal-500) 100%);
  color: var(--white);
  padding: 10px 35px 10px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 400px; height: 400px;
  background: rgba(79,179,196,0.15);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -60px; left: -60px;
  width: 300px; height: 300px;
  background: rgba(79,179,196,0.1);
  border-radius: 50%;
}
.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--teal-100);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.hero h1 {
  color: var(--white);
  margin-bottom: 10px;
}
.hero h1 span { color: var(--teal-300); }
.hero p {
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  margin-bottom: 20px;
  line-height: 1.7;
}
.hero-cta-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-visual {
  display: flex;
  justify-content: center;
}
.hero-card {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 310px;
}
.hero-card-stat {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.hero-card-stat:last-child { border-bottom: none; }
.stat-icon {
  width: 40px; height: 40px;
  background: rgba(79,179,196,0.3);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.stat-label { font-size: 0.78rem; color: rgba(255,255,255,0.6); font-weight: 500; }
.stat-value { font-size: 1.1rem; color: var(--white); font-weight: 600; margin-top: 2px; }

/* =========================================
   SECTIONS (shared)
   ========================================= */
.section {
  padding: 15px 15px;
}
.section-inner {
  max-width: 1120px;
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 10px;
}
.section-eyebrow {
  display: inline-block;
  color: var(--teal-500);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-header h2 { margin-bottom: 12px; }
.section-header p { max-width: 560px; margin: 0 auto; }

/* =========================================
   FEATURES GRID
   ========================================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 15px 28px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.feature-icon {
  width: 52px; height: 52px;
  background: var(--teal-50);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
  border: 1px solid var(--teal-100);
}
.feature-card h3 { margin-bottom: 10px; color: var(--slate-900); }

/* =========================================
   ABOUT SECTION
   ========================================= */
.about-section {
  background: var(--teal-900);
  color: var(--white);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-section h2 { color: var(--white); margin-bottom: 20px; }
.about-section p { color: rgba(255,255,255,0.75); margin-bottom: 16px; }
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.about-stat {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
}
.about-stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--teal-300);
  font-weight: 700;
}
.about-stat-label { font-size: 0.82rem; color: rgba(255,255,255,0.6); margin-top: 4px; }

/* =========================================
   DISCLAIMER
   ========================================= */
.disclaimer {
  background: var(--amber-100);
  border-left: 4px solid var(--amber-500);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 0 24px;
  max-width: 1072px;
  margin-left: auto;
  margin-right: auto;
}
.disclaimer-inner {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.disclaimer-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.disclaimer strong { color: var(--amber-500); display: block; margin-bottom: 4px; font-size: 0.9rem; }
.disclaimer p { font-size: 0.85rem; color: var(--slate-600); margin: 0; }

/* =========================================
   FOOTER
   ========================================= */
footer {
  background: var(--slate-900);
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 28px 24px;
  font-size: 0.82rem;
}
footer a { color: var(--teal-300); }

/* =========================================
   AUTH / LOGIN PAGE
   ========================================= */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: stretch;
}
.auth-left {
  flex: 1;
  background: linear-gradient(160deg, var(--teal-900), var(--teal-700));
  padding: 60px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: white;
  position: relative;
  overflow: hidden;
}
.auth-left::after {
  content: '';
  position: absolute;
  bottom: -100px; right: -100px;
  width: 350px; height: 350px;
  background: rgba(79,179,196,0.12);
  border-radius: 50%;
}
.auth-left h2 { color: white; font-size: 1.8rem; margin-bottom: 16px; }
.auth-left p { color: rgba(255,255,255,0.75); font-size: 0.95rem; line-height: 1.7; }
.auth-left ul { margin-top: 28px; display: flex; flex-direction: column; gap: 14px; }
.auth-left li {
  display: flex; align-items: center; gap: 12px;
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
}
.auth-left li span:first-child {
  width: 28px; height: 28px;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}
.auth-right {
  flex: 1;
  background: var(--white);
  padding: 60px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow-y: auto;
}
.auth-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 36px; }
.auth-logo .logo-icon {
  width: 36px; height: 36px;
  background: var(--teal-700); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 1rem;
}
.auth-logo span { font-weight: 700; color: var(--teal-700); font-size: 1rem; }
.auth-form-header { margin-bottom: 32px; }
.auth-form-header h1 {
  font-size: 1.8rem; font-family: var(--font-display);
  color: var(--slate-900); margin-bottom: 6px;
}
.auth-form-header p { font-size: 0.9rem; }

/* =========================================
   FORMS
   ========================================= */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 4px;
}
.form-group.full { grid-column: 1 / -1; }
label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--slate-600);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
input, select, textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--slate-900);
  background: var(--slate-100);
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--teal-500);
  box-shadow: 0 0 0 3px rgba(26,122,138,0.12);
  background: var(--white);
}
textarea { resize: vertical; min-height: 80px; }
select { cursor: pointer; }
.form-actions { margin-top: 24px; }
.form-note {
  font-size: 0.8rem;
  color: var(--slate-400);
  text-align: center;
  margin-top: 16px;
}

/* Severity radio group */
.severity-group { display: flex; gap: 12px; flex-wrap: wrap; }
.severity-option { display: none; }
.severity-label {
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--slate-200);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  transition: all var(--transition);
  color: var(--slate-600);
}
.severity-option:checked + .severity-label {
  border-color: var(--teal-500);
  background: var(--teal-50);
  color: var(--teal-700);
}
input[value="low"]:checked + .severity-label { border-color: var(--green-500); background: var(--green-100); color: var(--green-500); }
input[value="medium"]:checked + .severity-label { border-color: var(--amber-500); background: var(--amber-100); color: var(--amber-500); }
input[value="high"]:checked + .severity-label { border-color: var(--red-500); background: var(--red-100); color: var(--red-500); }

/* =========================================
   SYMPTOM PAGE
   ========================================= */
.symptom-page { min-height: 100vh; }
.page-header {
  background: linear-gradient(135deg, var(--teal-900), var(--teal-700));
  padding: 40px 24px;
  color: white;
}
.page-header-inner {
  max-width: 800px;
  margin: 0 auto;
}
.page-header h1 { color: white; font-size: 1.8rem; margin-bottom: 6px; }
.page-header p { color: rgba(255,255,255,0.75); font-size: 0.95rem; }

.user-profile-banner {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 32px auto;
  max-width: 800px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  align-items: center;
}
.profile-avatar {
  width: 52px; height: 52px;
  background: var(--teal-700);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 1.3rem;
  flex-shrink: 0;
}
.profile-info h3 { font-size: 1rem; margin-bottom: 2px; }
.profile-meta { display: flex; gap: 16px; flex-wrap: wrap; }
.profile-tag {
  font-size: 0.78rem;
  color: var(--slate-400);
  background: var(--slate-100);
  padding: 3px 10px;
  border-radius: 20px;
}
.profile-conditions {
  flex: 1; min-width: 200px;
  border-left: 1px solid var(--slate-200);
  padding-left: 20px;
}
.profile-conditions-label { font-size: 0.75rem; color: var(--slate-400); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 6px; }
.condition-pill {
  display: inline-block;
  background: var(--teal-50);
  color: var(--teal-700);
  border: 1px solid var(--teal-100);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  margin: 2px;
}

.symptom-form-wrap {
  max-width: 800px;
  margin: 0 auto 60px;
  padding: 0 24px;
}
.card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.card-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal-500);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--slate-100);
}
.analyze-note {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--teal-50);
  border: 1px solid var(--teal-100);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin-top: 24px;
  font-size: 0.83rem;
  color: var(--teal-700);
}

/* =========================================
   RESULTS PAGE
   ========================================= */
.results-page { min-height: 100vh; }

.results-grid {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 24px 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.result-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.result-card.full { grid-column: 1 / -1; }
.result-card-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin-bottom: 16px;
}
.result-card h3 { font-size: 1.1rem; color: var(--slate-900); margin-bottom: 6px; }

/* Risk badge */
.risk-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.9rem;
}
.risk-low { background: var(--green-100); color: var(--green-500); }
.risk-medium { background: var(--amber-100); color: var(--amber-500); }
.risk-high { background: var(--red-100); color: var(--red-500); }

/* Confidence bar */
.confidence-bar-wrap { margin-top: 8px; }
.confidence-bar-track {
  height: 10px;
  background: var(--slate-100);
  border-radius: 10px;
  overflow: hidden;
  margin: 10px 0;
}
.confidence-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal-500), var(--teal-300));
  border-radius: 10px;
  transition: width 1s ease;
}
.confidence-label { font-size: 0.82rem; color: var(--slate-400); display: flex; justify-content: space-between; }

/* Conditions list */
.conditions-list { display: flex; flex-direction: column; gap: 14px; margin-top: 8px; }
.condition-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
}
.condition-item-name { font-weight: 600; font-size: 0.95rem; }
.condition-item-prob {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--teal-700);
  background: var(--teal-50);
  border: 1px solid var(--teal-100);
  padding: 3px 10px;
  border-radius: 20px;
}
.condition-item-desc { font-size: 0.8rem; color: var(--slate-400); margin-top: 2px; }

/* Recommended action */
.action-steps { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.action-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 16px;
  background: var(--slate-100);
  border-radius: var(--radius-sm);
}
.action-step-num {
  width: 28px; height: 28px;
  background: var(--teal-700);
  color: white;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  flex-shrink: 0;
}
.action-step-text { font-size: 0.88rem; color: var(--slate-700); padding-top: 4px; }

/* Symptom summary on results */
.symptom-summary { display: flex; flex-direction: column; gap: 10px; }
.summary-row { display: flex; gap: 12px; }
.summary-key { font-size: 0.78rem; font-weight: 600; color: var(--slate-400); text-transform: uppercase; letter-spacing: 0.04em; min-width: 80px; padding-top: 2px; }
.summary-val { font-size: 0.88rem; color: var(--slate-700); }

/* Results disclaimer */
.results-disclaimer {
  background: var(--red-100);
  border-left: 4px solid var(--red-500);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 0 24px 32px;
  max-width: 852px;
  margin-left: auto;
  margin-right: auto;
}
.results-disclaimer strong { color: var(--red-500); display: block; margin-bottom: 4px; }
.results-disclaimer p { font-size: 0.85rem; color: var(--slate-600); margin: 0; }

.results-actions {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 60px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--teal-900);
  color: white;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 999;
  pointer-events: none;
  max-width: 300px;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr; }
  .result-card.full { grid-column: 1; }
  .auth-left { display: none; }
  .auth-right { padding: 40px 28px; }
}
@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.full { grid-column: 1; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero { padding: 60px 20px 80px; }
}
@media (max-width: 400px) {
  .about-stats { grid-template-columns: 1fr; }
}