/*
 * Coach Mandeep Singh Bains - Executive Health & Biohacking
 * Core Theme Stylesheet
 */

:root {
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --color-primary: #1E3A2F;
  --color-primary-hover: #162D24;
  --color-forest: #2D4A3E;
  --color-gold: #D4AF37;
  --color-bg: #F8FAF9;
  --color-card-bg: #FFFFFF;
  --color-text-main: #1E293B;
  --color-text-muted: #64748B;
  --color-border: #E2E8F0;
  --color-border-subtle: #F1F5F3;
  --shadow-subtle: 0 4px 20px -2px rgba(30, 58, 47, 0.05);
  --shadow-hover: 0 12px 30px -4px rgba(30, 58, 47, 0.12);
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
}

h1, h2, h3, h4, .font-serif, .font-display {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.25;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Scroll progress indicator */
#scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-forest), var(--color-gold));
  width: 0%;
  z-index: 9999;
  transition: width 0.1s linear;
}

/* High Contrast Mode */
.high-contrast {
  --color-bg: #FFFFFF !important;
  --color-text-main: #000000 !important;
  --color-text-muted: #111111 !important;
  --color-primary: #000000 !important;
  --color-forest: #000000 !important;
  --color-border: #000000 !important;
  filter: contrast(1.15);
}

.high-contrast body {
  background-color: #FFFFFF !important;
  color: #000000 !important;
}

.high-contrast .card, 
.high-contrast .bg-white {
  border: 2px solid #000000 !important;
}

/* Layout Container */
.container {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (max-width: 640px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

/* Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(248, 250, 249, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: all 0.2s ease;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-monogram {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-primary);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  border: 1px solid #355E4E;
  box-shadow: 0 2px 8px rgba(30, 58, 47, 0.2);
}

.brand-text-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.1;
  font-family: var(--font-serif);
}

.brand-text-sub {
  font-size: 0.72rem;
  color: var(--color-forest);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-desktop-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.nav-link:hover {
  color: var(--color-forest);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: 0.75rem;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  line-height: 1.2;
}

.btn-primary {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: #2D4A3E;
  box-shadow: 0 4px 14px rgba(30, 58, 47, 0.18);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(30, 58, 47, 0.25);
  color: #FFFFFF;
}

.btn-secondary {
  background: #FFFFFF;
  color: var(--color-text-main);
  border-color: var(--color-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.btn-secondary:hover {
  background: #F8FAF9;
  border-color: #CBD5E1;
}

.btn-gold {
  background: var(--color-gold);
  color: #1A281F;
  font-weight: 700;
}

.btn-sm {
  padding: 0.5rem 0.9rem;
  font-size: 0.82rem;
  border-radius: 0.5rem;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 10px;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-main);
  cursor: pointer;
}

.btn-icon:hover {
  background: #F1F5F3;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.badge-emerald {
  background: #ECFDF5;
  color: #065F46;
  border: 1px solid #A7F3D0;
}

.badge-gold {
  background: #FEF9C3;
  color: #854D0E;
  border: 1px solid #FDE047;
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 3.5rem 0 5rem;
  background: linear-gradient(180deg, #F8FAF9 0%, #F1F5F3 50%, #F8FAF9 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 1rem;
  margin-bottom: 0.85rem;
}

.hero-title-accent {
  color: var(--color-forest);
  display: block;
}

.hero-lead {
  font-size: 1.25rem;
  color: var(--color-forest);
  font-family: var(--font-serif);
  font-style: italic;
  margin-bottom: 1.25rem;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

@media (max-width: 640px) {
  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

.hero-stat-val {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-serif);
}

.hero-stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  margin-top: 0.2rem;
}

.coach-hero-card {
  position: relative;
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 20px 40px -10px rgba(30, 58, 47, 0.15);
  border: 1px solid var(--color-border);
}

.coach-hero-img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  object-position: top center;
}

.coach-hero-info {
  padding: 1.5rem;
  background: #FFFFFF;
}

/* Pain Points Section */
.pain-points-section {
  padding: 5rem 0;
  background: #FFFFFF;
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}

.section-title {
  font-size: 2.4rem;
  margin-top: 0.75rem;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-subtle);
  transition: all 0.25s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: #CBD5E1;
}

.card-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #ECFDF5;
  color: var(--color-forest);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  border: 1px solid #D1FAE5;
  font-size: 1.3rem;
}

.card-title {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
}

.card-text {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Four Pillars Section */
.pillars-section {
  padding: 5.5rem 0;
  background: var(--color-bg);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

@media (max-width: 800px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.pillar-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-subtle);
  position: relative;
}

.pillar-num {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 800;
  color: rgba(45, 74, 62, 0.12);
  line-height: 1;
  position: absolute;
  top: 1.5rem;
  right: 1.75rem;
}

.pillar-checklist {
  list-style: none;
  margin: 1.25rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pillar-checklist li {
  font-size: 0.88rem;
  color: var(--color-text-main);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.pillar-checklist li::before {
  content: "✓";
  color: var(--color-forest);
  font-weight: 800;
}

.science-note {
  background: #F8FAF9;
  border-left: 3px solid var(--color-forest);
  padding: 0.75rem 1rem;
  border-radius: 0 8px 8px 0;
  font-size: 0.82rem;
  color: #334155;
  font-style: italic;
  margin-top: 1.25rem;
}

/* Biometric Calculator Section */
.calc-section {
  padding: 5.5rem 0;
  background: #FFFFFF;
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.calc-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  background: #F8FAF9;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-subtle);
}

@media (max-width: 900px) {
  .calc-wrapper {
    grid-template-columns: 1fr;
    padding: 1.5rem;
  }
}

.calc-presets {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.preset-chip {
  padding: 0.4rem 0.85rem;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.preset-chip:hover, .preset-chip.active {
  background: var(--color-forest);
  color: #FFFFFF;
  border-color: var(--color-forest);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-text-main);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 0.65rem;
  border: 1px solid var(--color-border);
  background: #FFFFFF;
  color: var(--color-text-main);
  transition: border-color 0.2s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-forest);
  box-shadow: 0 0 0 3px rgba(45, 74, 62, 0.1);
}

.calc-results-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.calc-kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.kpi-card {
  background: #FFFFFF;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.kpi-val {
  font-size: 1.75rem;
  font-weight: 800;
  font-family: var(--font-serif);
  color: var(--color-primary);
}

.kpi-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.zone2-highlight-box {
  background: linear-gradient(135deg, #1E3A2F 0%, #2D4A3E 100%);
  color: #FFFFFF;
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 24px rgba(30, 58, 47, 0.25);
  border: 1px solid #3F6757;
}

.zone2-highlight-box h4 {
  color: #FFFFFF;
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.ai-insights-box {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  background: #EFF6FF;
  color: #1D4ED8;
  font-size: 0.72rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal-content {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  max-width: 680px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.25rem;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border: 1px solid var(--color-border);
  animation: modalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalSlideUp {
  from {
    transform: translateY(20px) scale(0.98);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: #F8FAF9;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.25rem;
  color: var(--color-text-muted);
}

.modal-close-btn:hover {
  background: #E2E8F0;
  color: var(--color-text-main);
}

/* Floating WhatsApp Button */
.floating-whatsapp {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1500;
  background: #25D366;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 1.25rem;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
  transition: all 0.25s ease;
  border: 2px solid #FFFFFF;
}

.floating-whatsapp:hover {
  background: #20BD5A;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 14px 30px rgba(37, 211, 102, 0.5);
  color: #FFFFFF;
}

@media (max-width: 640px) {
  .floating-whatsapp span {
    display: none;
  }
  .floating-whatsapp {
    padding: 0.85rem;
    bottom: 1.25rem;
    right: 1.25rem;
  }
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: #FFFFFF;
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-main);
  cursor: pointer;
}

.faq-question:hover {
  background: #F8FAF9;
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-icon {
  transition: transform 0.2s ease;
  font-size: 1.1rem;
  color: var(--color-forest);
}

/* Newsletter Section */
.newsletter-section {
  padding: 4.5rem 0;
  background: linear-gradient(135deg, #1E3A2F 0%, #162D24 100%);
  color: #FFFFFF;
}

.newsletter-box {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.newsletter-box h3 {
  color: #FFFFFF;
  font-size: 2.2rem;
  margin-bottom: 0.85rem;
}

.newsletter-box p {
  color: #CBD5E1;
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.newsletter-form {
  display: flex;
  gap: 0.6rem;
  max-width: 520px;
  margin: 0 auto;
}

@media (max-width: 600px) {
  .newsletter-form {
    flex-direction: column;
  }
}

.newsletter-input {
  flex: 1;
  padding: 0.85rem 1.25rem;
  border-radius: 0.75rem;
  border: 1px solid #355E4E;
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
}

.newsletter-input::placeholder {
  color: #94A3B8;
}

.newsletter-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--color-gold);
}

/* Footer */
.site-footer {
  background: #111E18;
  color: #94A3B8;
  padding: 4.5rem 0 2rem;
  border-top: 1px solid #1E3A2F;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-title {
  color: #FFFFFF;
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  font-family: var(--font-sans);
  font-weight: 700;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  color: #94A3B8;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-disclaimer {
  padding-top: 2rem;
  border-top: 1px solid #1E3A2F;
  font-size: 0.78rem;
  color: #64748B;
  line-height: 1.6;
}