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

:root {
  --primary: #1A1A1A;
  --primary-light: #333;
  --accent: #2DD4BF;
  --accent-dark: #14B8A6;
  --accent-light: #5EEAD4;
  --bg: #0a0a0a;
  --bg-card: #141414;
  --bg-alt: #1a1a1a;
  --text: #FFFFFF;
  --text-muted: rgba(255,255,255,0.42);
  --border: rgba(255,255,255,0.09);
  --radius: 8px;
  --radius-lg: 12px;
  --gradient: linear-gradient(135deg, #2DD4BF, #14B8A6);
  --gradient-text: linear-gradient(135deg, #2DD4BF, #5EEAD4);
  --font-size-base: calc(10px + 0.4vw);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  font-size: var(--font-size-base);
}

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

.container { max-width: 1280px; margin: 0 auto; padding: 0 48px; }

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Reveal Animations ===== */
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 24px; border-radius: 0; font-weight: 500;
  font-size: 0.82rem; cursor: pointer; transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent; text-align: center; letter-spacing: 0.03em;
}
.btn-primary {
  background: transparent; color: var(--text); border-color: rgba(255,255,255,0.15);
}
.btn-primary:hover { background: var(--text); color: var(--bg); }
.btn-outline {
  background: transparent; color: var(--text); border-color: rgba(255,255,255,0.15);
}
.btn-outline:hover { background: var(--text); color: var(--bg); }
.btn-sm { padding: 4px 10px; font-size: 0.72rem; }
.btn-lg { padding: 12px 28px; font-size: 0.82rem; }
.btn-block { width: 100%; }
.btn-accent { background: var(--accent); color: var(--text); border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }
.btn-radio { background: transparent; color: #FFFFFF; border: none; font-weight: 500; display: inline-flex; align-items: center; gap: 5px; padding: 8px 0; font-size: 0.88rem; }
.btn-radio:hover { opacity: 0.6; }
.btn-radio .btn-shape-text { display: inline-block; height: 14px; overflow: hidden; line-height: 0; }
.btn-radio .btn-shape-text img { height: 38px; margin-top: -23px; }

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0; transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.navbar.scrolled {
  background: rgba(10,10,10,0.88); backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.nav-container { display: flex; align-items: center; justify-content: space-between; position: relative; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.4rem; flex-shrink: 0; }
.logo-img { height: 64px; width: auto; }
.nav-links { position: absolute; left: 50%; transform: translateX(-50%); display: flex; align-items: center; gap: clamp(8px, 1.2vw, 16px); flex-wrap: nowrap; }
.nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; margin-right: -16px; }
.nav-links a {
  font-size: 0.78rem; font-weight: 400; transition: opacity 0.3s;
  letter-spacing: 0.02em; text-transform: uppercase; opacity: 0.6; white-space: nowrap;
}
.nav-links a:hover { opacity: 1; }
.nav-dropdown { position: relative; display: flex; align-items: center; }
.nav-dropdown > a { cursor: pointer; }
.nav-dropdown-menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  background: #141414; border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 0; min-width: 200px; opacity: 0; visibility: hidden;
  transition: all 0.3s; margin-top: 12px; box-shadow: 0 8px 32px rgba(0,0,0,0.6);
}
@media (min-width: 769px) {
  .nav-dropdown:hover .nav-dropdown-menu { opacity: 1; visibility: visible; margin-top: 8px; }
}
.nav-dropdown-menu a {
  display: block; padding: 10px 20px; font-size: 0.82rem; text-transform: none;
  letter-spacing: 0; opacity: 0.7; white-space: nowrap;
}
.nav-dropdown-menu a:hover { opacity: 1; background: rgba(255,255,255,0.05); }
.nav-links a.nav-active { opacity: 1; font-weight: 600; }
.nav-actions .btn { opacity: 1; text-transform: none; white-space: nowrap; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; position: relative; z-index: 1060; }
.nav-toggle span {
  display: block; width: 16px; height: 1px; background: var(--text);
  margin: 4px 0; transition: all 0.3s; transform-origin: center;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative; padding: 200px 0 140px; min-height: 100vh;
  display: flex; align-items: center; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; background: transparent; }
.hero-content { position: relative; text-align: center; max-width: 100%; margin: 0 auto; }
.hero h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 300; line-height: 1.1;
  margin-bottom: 24px; letter-spacing: -0.04em;
}
.hero-logo { display: inline-block; height: 1em; width: auto; vertical-align: baseline; margin: 0 4px; }
.hero-sub {
  font-size: clamp(0.85rem, 1vw, 0.95rem); color: var(--text-muted); max-width: 520px;
  margin-bottom: 48px; line-height: 1.8; font-weight: 300;
}
.hero-actions { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 100px; }
.hero-stats {
  display: flex; gap: 80px; padding-top: 48px;
  border-top: 1px solid var(--border);
}
.stat { text-align: left; }
.stat strong {
  display: block; font-size: clamp(1.4rem, 2.5vw, 2rem); font-weight: 300;
  letter-spacing: -0.03em; line-height: 1;
}
.stat span {
  font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase;
  letter-spacing: 0.1em; margin-top: 8px; display: block;
}

/* ===== Sections ===== */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 48px; }
.section-header h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem); font-weight: 300; margin-bottom: 20px;
  letter-spacing: -0.03em; line-height: 1.1;
}
.section-header p { color: var(--text-muted); font-size: 1.05rem; font-weight: 300; line-height: 1.8; }

.tag {
  display: inline-block; padding: 0; border-radius: 0;
  font-size: 0.72rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.15em;
  background: none; color: var(--text-muted); margin-bottom: 20px;
}

/* ===== Filters ===== */
.filters { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 56px; }
.filter-btn {
  padding: 10px 24px; border-radius: 0; border: 1px solid var(--border);
  background: transparent; color: var(--text-muted); font-size: 0.82rem;
  font-weight: 400; cursor: pointer; transition: all 0.3s; font-family: inherit;
  letter-spacing: 0.02em; text-transform: uppercase;
}
.filter-btn:hover { border-color: var(--text); color: var(--text); }
.filter-btn.active { background: var(--text); border-color: var(--text); color: var(--bg); }

/* ===== Cards ===== */
.card-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px; justify-items: start;
}
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 0;
  overflow: hidden; transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1); cursor: pointer;
  width: 100%;
}
.card:hover { border-color: var(--text); }

.card-header-row {
  display: flex; align-items: center; gap: 14px; margin-bottom: 12px;
}
.card-avatar-inline {
  width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 0.82rem; color: #fff;
  object-fit: cover;
}
img.card-avatar-inline { background: var(--border); }
.card-header-info { flex: 1; min-width: 0; }

.card-body { padding: 20px 24px; }
.card-body h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 2px; letter-spacing: -0.01em; }
.card-specialty {
  font-size: 0.7rem; color: var(--accent-dark); font-weight: 500; margin-bottom: 0;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.card-desc {
  font-size: 0.82rem; color: var(--text-muted); margin-bottom: 14px; line-height: 1.6; font-weight: 300;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.72rem; color: var(--text-muted); margin-bottom: 14px; }
.card-meta span { display: flex; align-items: center; gap: 4px; }
.card-rating { color: var(--text); font-weight: 500; }

.card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; border-top: 1px solid var(--border);
}
.card-price { font-size: 1.1rem; font-weight: 300; letter-spacing: -0.02em; }
.card-price span { font-size: 0.72rem; font-weight: 400; color: var(--text-muted); }

.workout-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.workout-tag {
  padding: 4px 12px; border-radius: 0; font-size: 0.7rem;
  background: var(--bg-alt); color: var(--text-muted); font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.04em;
}

/* ===== Steps ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 64px; }
.step { text-align: left; padding: 0; }
.step-number {
  width: auto; height: auto; border-radius: 0; background: none;
  font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 300; color: var(--border);
  margin-bottom: 24px; line-height: 1; letter-spacing: -0.04em;
}
.step h3 { font-size: 1rem; font-weight: 500; margin-bottom: 12px; letter-spacing: -0.01em; }
.step p { font-size: 0.92rem; color: var(--text-muted); font-weight: 300; line-height: 1.7; }

/* ===== Pricing ===== */
.pricing-grid { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--border); max-width: 500px; margin: 0 auto; }
.pricing-card {
  background: var(--bg-card); border: none; border-radius: 0;
  padding: 48px 36px; position: relative; transition: all 0.4s;
}
.pricing-card.featured {
  background: var(--accent-dark); color: #fff; transform: none;
  box-shadow: none;
}
.pricing-card.featured .price span,
.pricing-card.featured li,
.pricing-card.featured .btn-outline { color: rgba(255,255,255,0.65); }
.pricing-card.featured .btn-primary { background: #fff; color: #0a0a0a; border-color: #fff; }
.pricing-card.featured .btn-primary:hover { background: transparent; color: #fff; border-color: #fff; }
.popular-badge {
  position: absolute; top: 20px; right: 20px;
  background: var(--accent); color: var(--text); padding: 4px 12px; border-radius: 0;
  font-size: 0.68rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em;
  transform: none; left: auto;
}
.pricing-card h3 { font-size: 0.82rem; font-weight: 500; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.1em; }
.price { font-size: clamp(2.5rem, 4vw, 3.5rem); font-weight: 200; margin-bottom: 36px; letter-spacing: -0.03em; }
.price span { font-size: 0.9rem; font-weight: 400; color: var(--text-muted); }
.pricing-card ul { margin-bottom: 40px; }
.pricing-card li {
  padding: 10px 0; font-size: 0.88rem; color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-left: 0; position: relative; font-weight: 300;
}
.pricing-card.featured li { border-bottom-color: rgba(255,255,255,0.1); }
.pricing-card li::before { content: none; }

/* ===== Testimonials ===== */
.testimonials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.testimonial {
  background: transparent; border: 1px solid var(--border); border-radius: 0;
  padding: 40px;
}
.stars { color: var(--accent); font-size: 0.9rem; margin-bottom: 24px; letter-spacing: 2px; }
.testimonial p { font-size: 1rem; color: var(--text); line-height: 1.8; margin-bottom: 28px; font-weight: 300; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-author strong { display: block; font-size: 0.85rem; font-weight: 500; }
.testimonial-author span { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

.avatar {
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 0.75rem; color: #fff;
  background: var(--text);
}
.avatar-sm { width: 36px; height: 36px; font-size: 0.7rem; }

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0; text-align: center; background: #141414; color: #fff;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.cta-section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 300; margin-bottom: 24px;
  letter-spacing: -0.04em;
}
.cta-section .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.cta-section p { color: rgba(255,255,255,0.5); font-size: clamp(1rem, 1.2vw, 1.15rem); margin-bottom: 48px; font-weight: 300; }
.cta-section .btn-primary { background: #fff; color: #0a0a0a; border-color: #fff; }
.cta-section .btn-primary:hover { background: transparent; color: #fff; }

/* ===== Credential Tooltip ===== */
.cred-tip {
  position: relative; cursor: help;
}
.cred-tip::after {
  content: attr(data-tip);
  position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%);
  background: var(--primary, #1A1A1A); color: #fff; font-size: 0.72rem; font-weight: 400;
  letter-spacing: normal; text-transform: none;
  padding: 6px 12px; border-radius: 6px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
  z-index: 100; box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.cred-tip::before {
  content: ''; position: absolute; bottom: calc(100% + 2px); left: 50%; transform: translateX(-50%);
  border: 5px solid transparent; border-top-color: var(--primary, #1A1A1A);
  opacity: 0; pointer-events: none; transition: opacity 0.2s; z-index: 100;
}
.cred-tip:hover::after, .cred-tip:hover::before { opacity: 1; }
@media (max-width: 768px) {
  .cred-tip::after { font-size: 0.68rem; padding: 5px 10px; }
}

/* ===== Footer ===== */
.footer { padding: 80px 0 40px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 64px; margin-bottom: 64px; }
.footer-desc { color: var(--text-muted); font-size: 0.88rem; margin-top: -2px; line-height: 1.7; font-weight: 300; }
.footer-col h4 {
  font-size: 0.72rem; font-weight: 500; text-transform: uppercase;
  letter-spacing: 0.12em; margin-bottom: 24px; color: var(--text-muted);
}
.footer-col a {
  display: block; color: var(--text); font-size: 0.88rem; padding: 6px 0;
  transition: opacity 0.3s; font-weight: 400;
}
.footer-col a:hover { opacity: 0.5; }
.footer-bottom { text-align: center; padding-top: 40px; border-top: 1px solid var(--border); }
.footer-bottom p { font-size: 0.78rem; color: var(--text-muted); font-weight: 300; }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0,0,0,0.3); backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all 0.4s;
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 0;
  padding: 48px; max-width: 520px; width: 90%; max-height: 90vh; overflow-y: auto;
  transform: translateY(20px); transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}
.modal-lg { max-width: 760px; }
.modal-overlay.active .modal { transform: translateY(0); }
.modal-close {
  position: absolute; top: 20px; right: 20px; background: none; border: none;
  color: var(--text-muted); font-size: 1.4rem; cursor: pointer; line-height: 1;
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  transition: opacity 0.3s;
}
.modal-close:hover { opacity: 0.5; }

.modal h2 { font-size: 1.6rem; font-weight: 300; margin-bottom: 8px; letter-spacing: -0.02em; }
.modal .subtitle { color: var(--text-muted); margin-bottom: 32px; font-size: 0.92rem; font-weight: 300; }

.form-group { margin-bottom: 24px; }
.form-group label { display: block; font-size: 0.78rem; font-weight: 500; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.06em; }
.form-group input, .form-group select {
  width: 100%; padding: 14px 0; border-radius: 0;
  border: none; border-bottom: 1px solid var(--border); background: transparent;
  color: var(--text); font-size: 1rem; font-family: inherit;
  transition: border-color 0.3s; outline: none;
}
.form-group input:focus, .form-group select:focus { border-color: var(--text); }

/* Trainer modal detail */
.trainer-detail-header { display: flex; gap: 28px; margin-bottom: 36px; align-items: flex-start; }
.trainer-detail-avatar {
  width: 72px; height: 72px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 1.4rem; color: #fff;
}
.trainer-detail-info h2 { margin-bottom: 4px; font-weight: 400; }
.trainer-detail-info .card-specialty { margin-bottom: 8px; }
.trainer-detail-stats { display: flex; gap: 24px; margin-top: 8px; font-size: 0.82rem; color: var(--text-muted); }

.workout-list { margin: 28px 0; }
.workout-list h3 { font-size: 0.78rem; font-weight: 500; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); }
.workout-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; background: transparent; border-radius: 0;
  margin-bottom: 0; border-bottom: 1px solid var(--border);
}
.workout-item:last-child { border-bottom: none; }
.workout-item-info h4 { font-size: 0.95rem; font-weight: 500; }
.workout-item-info p { font-size: 0.78rem; color: var(--text-muted); }
.workout-item-meta { text-align: right; font-size: 0.78rem; color: var(--text-muted); }
.workout-item-meta strong { display: block; color: var(--accent-dark); font-size: 0.85rem; font-weight: 500; }

.subscribe-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 0; background: transparent; border-radius: 0;
  margin-top: 28px; border-top: 1px solid var(--border);
}
.subscribe-bar .card-price { margin: 0; }

/* ===== Toast ===== */
.toast {
  position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--accent); color: #fff; padding: 16px 32px; border-radius: 0;
  font-weight: 500; font-size: 0.88rem; z-index: 3000; opacity: 0;
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.toast.active { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ===== AI Trainer ===== */
.ai-trainer-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start;
}
.ai-trainer-features { display: flex; flex-direction: column; gap: 32px; padding-top: 8px; }

.ai-trainer-intro { margin-bottom: 8px; }
.ai-trainer-name-card {
  display: flex; align-items: center; gap: 16px; margin-bottom: 16px;
}
.ai-trainer-name-avatar {
  width: 56px; height: 56px; border-radius: 50%; flex-shrink: 0;
  background: var(--accent-dark); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.3rem;
}
.ai-trainer-name-card h3 {
  font-size: 1.3rem; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 2px;
}
.ai-trainer-name-card span {
  font-size: 0.78rem; color: var(--accent-dark); font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.ai-trainer-bio {
  font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; font-weight: 300;
  padding-bottom: 24px; border-bottom: 1px solid var(--border);
}
.ai-feature {
  display: flex; gap: 20px; align-items: flex-start;
}
.ai-feature-icon {
  width: 48px; height: 48px; border-radius: 0; flex-shrink: 0;
  background: var(--bg-alt); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem;
}
.ai-feature h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 6px; letter-spacing: -0.01em; }
.ai-feature p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; font-weight: 300; }

.ai-chat-container {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 0;
  overflow: hidden; display: flex; flex-direction: column; height: 540px;
}
.ai-chat-header {
  display: flex; align-items: center; gap: 12px; padding: 18px 24px;
  border-bottom: 1px solid var(--border);
}
.ai-chat-header strong { display: block; font-size: 0.9rem; font-weight: 600; }
.ai-status { font-size: 0.7rem; color: var(--accent-dark); font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; }
.ai-chat-avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 0.75rem;
}

.ai-chat-messages {
  flex: 1; overflow-y: auto; padding: 24px; display: flex; flex-direction: column; gap: 16px;
}
.ai-msg { max-width: 85%; animation: aiFadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
.ai-msg-bot { align-self: flex-start; }
.ai-msg-user { align-self: flex-end; }
.ai-msg p {
  padding: 14px 18px; border-radius: 2px; font-size: 0.88rem; line-height: 1.7; font-weight: 300;
}
.ai-msg-bot p {
  background: var(--bg-alt); color: var(--text); border-left: 2px solid var(--border);
}
.ai-msg-user p {
  background: var(--accent); color: #fff;
}

.ai-quick-replies { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.ai-quick-replies button {
  padding: 7px 16px; border-radius: 0; border: 1px solid var(--border);
  background: var(--bg-card); color: var(--text); font-size: 0.8rem;
  font-weight: 400; cursor: pointer; transition: all 0.3s; font-family: inherit;
}
.ai-quick-replies button:hover {
  border-color: var(--accent); background: var(--accent); color: #fff;
}

.ai-chat-input {
  display: flex; gap: 0; padding: 0; border-top: 1px solid var(--border);
}
.ai-chat-input input {
  flex: 1; padding: 16px 24px; border-radius: 0; border: none;
  background: var(--bg-card); color: var(--text); font-size: 0.88rem; font-family: inherit;
  outline: none;
}
.ai-send-btn {
  width: 56px; height: auto; border-radius: 0; border: none; border-left: 1px solid var(--border);
  background: var(--bg-card); color: var(--text); font-size: 1rem;
  cursor: pointer; transition: all 0.3s; display: flex; align-items: center; justify-content: center;
}
.ai-send-btn:hover { background: var(--accent); color: #fff; }

.ai-workout-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 0;
  padding: 20px; margin-top: 14px;
}
.ai-workout-card h4 {
  font-size: 0.95rem; font-weight: 600; margin-bottom: 14px; letter-spacing: -0.01em;
  background: none; -webkit-text-fill-color: var(--text); color: var(--text);
}
.ai-exercise {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 0.85rem;
}
.ai-exercise:last-child { border-bottom: none; }
.ai-exercise-name { font-weight: 500; }
.ai-exercise-detail { color: var(--text-muted); font-size: 0.8rem; font-weight: 300; }
.ai-workout-footer {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border);
  font-size: 0.78rem; color: var(--text-muted);
}
.ai-save-btn {
  padding: 7px 18px; border-radius: 0; border: 1px solid var(--accent);
  background: var(--accent); color: #fff; font-size: 0.78rem;
  font-weight: 500; cursor: pointer; font-family: inherit; transition: all 0.3s;
}
.ai-save-btn:hover { background: transparent; color: var(--accent); }

.ai-typing { display: flex; gap: 5px; padding: 14px 18px; }
.ai-typing span {
  width: 6px; height: 6px; border-radius: 50%; background: var(--text-muted);
  animation: aiTyping 1.2s infinite;
}
.ai-typing span:nth-child(2) { animation-delay: 0.2s; }
.ai-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes aiFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes aiTyping {
  0%, 60%, 100% { opacity: 0.2; transform: scale(0.8); }
  30% { opacity: 1; transform: scale(1); }
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .container { padding: 0 24px; }
  .ai-trainer-layout { grid-template-columns: 1fr; gap: 40px; }
  .ai-chat-container { height: 480px; }
  .steps, .pricing-grid, .testimonials, .footer-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid { background: transparent; gap: 1px; }
  .pricing-card.featured { transform: none; }
  .hero-stats { gap: 40px; flex-wrap: wrap; }
  .card-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
    left: auto; transform: none;
    background: #0f0f0f; flex-direction: column; align-items: center; padding: 80px 32px 32px;
    gap: 20px; transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1); border-left: 1px solid var(--border);
    z-index: 1050; overflow-y: auto; text-align: center;
  }
  .nav-links.open { right: 0; }
  .nav-actions {
    display: none;
  }
  .nav-toggle { display: block; position: fixed; top: 24px; right: 24px; z-index: 1060; }
  .nav-dropdown { position: static; flex-direction: column; align-items: center; }
  .nav-dropdown > a {
    display: flex; align-items: center; gap: 6px;
  }
  .nav-dropdown > a::after {
    content: ''; display: inline-block; width: 0; height: 0;
    border-left: 4px solid transparent; border-right: 4px solid transparent;
    border-top: 4px solid currentColor; transition: transform 0.3s;
  }
  .nav-dropdown.open > a::after { transform: rotate(180deg); }
  .nav-dropdown-menu {
    position: static; transform: none; opacity: 0; visibility: hidden;
    max-height: 0; overflow: hidden;
    background: transparent; border: none; border-radius: 0; box-shadow: none;
    padding: 0; margin-top: 0; min-width: unset; text-align: center;
    transition: max-height 0.3s ease, opacity 0.3s ease;
  }
  .nav-dropdown.open .nav-dropdown-menu {
    opacity: 1 !important; visibility: visible !important; max-height: 200px !important; margin-top: 4px;
  }
  .nav-dropdown-menu a {
    padding: 6px 0; font-size: 0.75rem; opacity: 0.5;
  }
  .container { padding: 0 24px; }
  .hero h1 { font-size: clamp(1.6rem, 5vw, 2.2rem); }
  .hero { padding: 120px 0 48px; }
  .section { padding: 36px 0; }
  .section-alt { padding: 36px 0; }
  .section-header { margin-bottom: 24px; }
  .trainer-detail-header { flex-direction: column; align-items: center; text-align: center; }
  .trainer-detail-stats { justify-content: center; }
  .hero-stats { gap: 24px; }
  .steps { gap: 24px; }
  .page-hero { padding: 100px 0 20px; }
  .page-hero h1 { font-size: clamp(1.4rem, 5vw, 2rem); }
  .page-hero-sub { margin-bottom: 24px; }
  .cta-section { padding: 36px 0; }
  .footer { padding: 36px 0 24px; }
  .footer-grid { gap: 32px; margin-bottom: 32px; }
  .testimonials { gap: 24px; }
  .pricing-grid { gap: 24px; }
}

/* ===== Page Hero (sub-pages) ===== */
.page-hero {
  padding: 160px 0 40px;
  position: relative;
  text-align: center;
}
.page-hero .tag { margin-bottom: 16px; display: block; }
.page-hero h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 10px;
}
.page-hero-sub {
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  color: var(--text-muted);
  max-width: 520px;
  font-weight: 300;
  line-height: 1.8;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Step Links ===== */
.step-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent-dark);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color 0.3s;
}
.step-link:hover { color: var(--text); }

/* ===== Consultation Section ===== */
.consult-section {
  padding: 24px 0; margin-top: 20px; border-top: 1px solid var(--border);
}
.consult-section h3 {
  font-size: 0.95rem; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.01em;
}

/* ===== Trainer of the Month ===== */
.totm-card {
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 48px; margin-top: 32px;
}
.totm-layout {
  display: grid; grid-template-columns: auto 1fr; gap: 48px; align-items: center;
}
.totm-avatar-area { text-align: center; }
.totm-avatar {
  width: 120px; height: 120px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 2.2rem; color: #fff; margin: 0 auto 16px;
}
.totm-badge {
  display: inline-block; padding: 6px 16px;
  background: var(--accent); color: var(--text);
  font-size: 0.7rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.08em;
}
.totm-info h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 300;
  letter-spacing: -0.02em; margin-bottom: 4px;
}
.totm-quote {
  font-style: italic; font-size: 1.05rem; color: var(--text-muted);
  margin: 16px 0; line-height: 1.7; font-weight: 300;
}

/* ===== Workout Purchase Items ===== */
.workout-item-purchase {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 20px 0; border-bottom: 1px solid var(--border); gap: 24px;
}
.workout-item-purchase:last-child { border-bottom: none; }
.workout-item-purchase .workout-item-info { flex: 1; }
.workout-item-purchase .workout-item-info h4 { font-size: 0.95rem; font-weight: 500; margin-bottom: 6px; }
.workout-item-purchase .workout-item-info p { font-size: 0.85rem; color: var(--text-muted); font-weight: 300; line-height: 1.6; margin-bottom: 8px; }
.workout-item-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.workout-item-buy { text-align: right; flex-shrink: 0; display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }
.workout-item-price { font-size: 1.1rem; font-weight: 400; letter-spacing: -0.01em; }

/* ===== Progress Dashboard ===== */
.progress-dashboard { display: flex; flex-direction: column; gap: 56px; }

.progress-stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.progress-stat-card {
  padding: 32px; text-align: center;
}
.progress-stat-number {
  font-size: clamp(1.8rem, 3vw, 2.8rem); font-weight: 200;
  letter-spacing: -0.03em; line-height: 1; margin-bottom: 8px;
}
.progress-stat-label {
  font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase;
  letter-spacing: 0.1em; font-weight: 500;
}

/* Schedule */
.schedule-section h2, .progress-chart-section h2, .workout-log-section h2, .purchased-section h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem); font-weight: 300;
  letter-spacing: -0.02em; margin-bottom: 24px;
}
.schedule-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px; flex-wrap: wrap; gap: 16px;
}
.schedule-nav { display: flex; align-items: center; gap: 16px; }
.schedule-week-label { font-size: 0.88rem; font-weight: 500; min-width: 140px; text-align: center; }

.schedule-grid {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px;
  background: var(--border);
}
.schedule-day {
  background: var(--bg-card); padding: 16px; min-height: 120px;
  cursor: pointer; transition: all 0.3s; position: relative;
}
.schedule-day:hover { background: var(--bg-alt); }
.schedule-day.today { border-top: 2px solid var(--accent); }
.schedule-day.completed { background: rgba(45, 212, 191, 0.05); }
.schedule-day.missed { background: rgba(239, 68, 68, 0.03); }
.schedule-day-header { display: flex; justify-content: space-between; margin-bottom: 12px; }
.schedule-day-name { font-size: 0.72rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); }
.schedule-day-date { font-size: 0.85rem; font-weight: 600; }
.schedule-day.today .schedule-day-date { color: var(--accent-dark); }
.schedule-day-workout { }
.schedule-workout-name { font-size: 0.82rem; font-weight: 500; margin-bottom: 2px; }
.schedule-workout-trainer { font-size: 0.7rem; color: var(--accent-dark); font-weight: 500; margin-bottom: 2px; }
.schedule-workout-meta { font-size: 0.72rem; color: var(--text-muted); }
.schedule-day-empty { display: flex; align-items: center; justify-content: center; height: 50px; }
.schedule-day-empty span { font-size: 0.78rem; color: var(--text-muted); opacity: 0.5; }
.schedule-day:hover .schedule-day-empty span { opacity: 1; }
.schedule-status-icon { position: absolute; top: 16px; right: 16px; font-size: 0.9rem; }
.schedule-day.completed .schedule-status-icon { color: var(--accent-dark); }
.schedule-day.missed .schedule-status-icon { color: #EF4444; }

/* Progress Chart */
.progress-bar-chart { display: flex; flex-direction: column; gap: 16px; }
.chart-row { display: flex; align-items: center; gap: 16px; }
.chart-label { font-size: 0.82rem; font-weight: 500; min-width: 60px; }
.chart-bar-container { flex: 1; height: 28px; background: var(--bg-alt); position: relative; }
.chart-bar { height: 100%; background: var(--accent); transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1); min-width: 2px; }
.chart-value { font-size: 0.78rem; color: var(--text-muted); min-width: 160px; text-align: right; }

/* Workout Log */
.workout-log-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px; flex-wrap: wrap; gap: 16px;
}
.workout-log-list { display: flex; flex-direction: column; }
.log-entry {
  display: flex; align-items: flex-start; gap: 20px; padding: 20px 0;
  border-bottom: 1px solid var(--border); cursor: default;
}
.log-entry:last-child { border-bottom: none; }
.log-entry-date { font-size: 0.82rem; font-weight: 500; min-width: 80px; color: var(--text-muted); padding-top: 2px; }
.log-entry-info { flex: 1; }
.log-entry-info h4 { font-size: 0.95rem; font-weight: 500; margin-bottom: 6px; }
.log-entry-trainer { font-size: 0.78rem; color: var(--accent-dark); font-weight: 500; margin-bottom: 4px; }
.log-entry-meta { display: flex; gap: 12px; font-size: 0.78rem; color: var(--text-muted); align-items: center; }
.log-entry-notes { font-size: 0.82rem; color: var(--text-muted); font-style: italic; margin-top: 6px; font-weight: 300; }
.log-delete {
  background: none; border: none; font-size: 1.2rem; color: var(--text-muted);
  cursor: pointer; opacity: 0.3; transition: opacity 0.3s; padding: 4px 8px;
}
.log-delete:hover { opacity: 1; color: #EF4444; }

/* Purchased Plans */
.purchased-list { display: flex; flex-direction: column; }
.purchased-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; border-bottom: 1px solid var(--border);
}
.purchased-item:last-child { border-bottom: none; }
.purchased-item-info h4 { font-size: 0.95rem; font-weight: 500; margin-bottom: 2px; }
.purchased-item-date { font-size: 0.78rem; color: var(--text-muted); }
.purchased-item-price { font-size: 1.1rem; font-weight: 400; }

.empty-state {
  padding: 48px; text-align: center; color: var(--text-muted);
  font-size: 0.92rem; font-weight: 300; background: var(--bg-alt);
}

/* ===== Trainer Dashboard ===== */
.td-section { margin-bottom: 56px; }
.td-section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px; flex-wrap: wrap; gap: 16px;
}
.td-section-header h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem); font-weight: 300;
  letter-spacing: -0.02em; margin: 0;
}
.td-filters { display: flex; gap: 4px; }

.td-client-list { display: flex; flex-direction: column; }
.td-client-row {
  display: flex; align-items: center; gap: 20px; padding: 20px 24px;
  border: 1px solid var(--border); border-bottom: none;
  background: var(--bg-card); cursor: pointer; transition: all 0.3s;
}
.td-client-row:last-child { border-bottom: 1px solid var(--border); }
.td-client-row:hover { background: var(--bg-alt); }
.td-client-row.needs-attention { border-left: 3px solid #F59E0B; }
.td-client-avatar { flex-shrink: 0; }
.td-client-info { flex: 1; min-width: 0; }
.td-client-info h4 { font-size: 0.95rem; font-weight: 500; margin-bottom: 2px; }
.td-client-info span { font-size: 0.78rem; color: var(--text-muted); }
.td-client-stats-mini { display: flex; gap: 32px; }
.td-mini-stat { text-align: center; }
.td-mini-stat strong { display: block; font-size: 0.95rem; font-weight: 500; }
.td-mini-stat span { font-size: 0.68rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.td-client-status { flex-shrink: 0; }

.status-badge {
  padding: 4px 12px; font-size: 0.7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.status-good { background: rgba(45, 212, 191, 0.1); color: var(--accent-dark); }
.status-warning { background: rgba(245, 158, 11, 0.1); color: #D97706; }

/* Sales */
.td-sales-list { display: flex; flex-direction: column; }
.td-sale-row {
  display: flex; align-items: center; gap: 20px; padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.td-sale-row:last-child { border-bottom: none; }
.td-sale-info { flex: 1; }
.td-sale-info h4 { font-size: 0.88rem; font-weight: 500; margin-bottom: 2px; }
.td-sale-info span { font-size: 0.78rem; color: var(--text-muted); }
.td-sale-type { flex-shrink: 0; }
.td-sale-amount { text-align: right; flex-shrink: 0; }
.td-sale-amount strong { display: block; font-size: 0.95rem; }
.td-sale-amount span { font-size: 0.72rem; color: var(--text-muted); }

/* ===== Responsive: New Components ===== */
@media (max-width: 900px) {
  .totm-layout { grid-template-columns: 1fr; text-align: center; gap: 24px; }
  .totm-info .trainer-detail-stats { justify-content: center; }
  .totm-info div:last-child { justify-content: center; }
  .progress-stats-row { grid-template-columns: repeat(2, 1fr) !important; }
  .schedule-grid { grid-template-columns: repeat(4, 1fr); }
  .td-client-row { flex-wrap: wrap; }
  .td-client-stats-mini { gap: 16px; }
  .chart-value { min-width: auto; }
}

@media (max-width: 768px) {
  .schedule-grid { grid-template-columns: 1fr; }
  .progress-stats-row { grid-template-columns: 1fr 1fr !important; }
  .progress-stat-card:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .td-client-stats-mini { display: none; }
  .td-section { margin-bottom: 32px; }
  .td-section-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .td-client-row { padding: 16px; gap: 12px; }
  .td-sale-row { flex-wrap: wrap; gap: 12px; }
  .td-sale-amount { text-align: left; }
  .progress-stat-card { padding: 20px 12px; }
  .progress-stat-number { font-size: clamp(1.2rem, 4vw, 1.6rem); }
  .workout-item-purchase { flex-direction: column; }
  .workout-item-buy { flex-direction: row; align-items: center; gap: 12px; }
  #clientDetailContent > div[style*="grid-template-columns"] { grid-template-columns: 1fr !important; }
  .totm-layout { grid-template-columns: 1fr; text-align: center; gap: 24px; }
  .totm-card { padding: 24px; }
  .totm-info h2 { font-size: 1.6rem; }
  .totm-quote { font-size: 0.92rem; }
  .totm-info .card-meta { justify-content: center; }
  .totm-info .card-actions { display: flex; flex-direction: column; align-items: center; gap: 16px; }
  .modal { padding: 24px; }
  .modal-lg { max-width: 100%; }
  .trainer-detail-header { flex-direction: column; align-items: center; text-align: center; }
  .trainer-detail-stats { justify-content: center; flex-wrap: wrap; }
  .subscribe-bar { flex-direction: column; text-align: center; gap: 16px; }
}