/* ==========================================================================
   Gym Workout Planner - Pro Design System & Stylesheet
   Color Palette: Deep Obsidian, Slate, Cobalt Blue & Cyan Glow
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

/* --- CSS Variables / Design Tokens --- */
:root {
  --bg-dark: #070b14;
  --bg-darker: #04070d;
  --bg-card: #111827;
  --bg-card-hover: #162032;
  --bg-glass: rgba(17, 24, 39, 0.72);
  --bg-glass-card: rgba(17, 24, 39, 0.6);
  --bg-glass-nav: rgba(7, 11, 20, 0.85);

  --primary: #2563ff;
  --primary-dark: #1747d1;
  --primary-light: #5c8dff;
  --primary-glow: rgba(37, 99, 255, 0.28);

  --accent-cyan: #38bdf8;
  --cyan-glow: rgba(56, 189, 248, 0.35);

  --success: #22c55e;
  --warning: #f59e0b;

  --text-main: #ffffff;
  --text-body: #94a3b8;
  --text-muted: #64748b;
  --text-bright: #f1f5f9;

  --border-subtle: #1e293b;
  --border-active: rgba(37, 99, 255, 0.4);
  --border-glow: rgba(56, 189, 248, 0.3);

  --gradient-primary: linear-gradient(135deg, #2563ff 0%, #38bdf8 100%);
  --gradient-card: linear-gradient(180deg, rgba(37, 99, 255, 0.08) 0%, rgba(17, 24, 39, 0.95) 100%);
  --gradient-text: linear-gradient(135deg, #ffffff 30%, #93c5fd 70%, #38bdf8 100%);
  --gradient-glow: radial-gradient(circle, rgba(37, 99, 255, 0.15) 0%, rgba(7, 11, 20, 0) 70%);

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px rgba(37, 99, 255, 0.3);
  --shadow-cyan: 0 0 25px rgba(56, 189, 248, 0.25);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-dark);
  overflow-x: hidden;
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-dark);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* --- Background Ambient Glows --- */
.ambient-glow-top {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 500px;
  background: radial-gradient(50% 50% at 50% 50%, rgba(37, 99, 255, 0.22) 0%, rgba(56, 189, 248, 0.08) 50%, transparent 100%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.ambient-glow-mid {
  position: absolute;
  top: 1400px;
  right: -100px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, transparent 70%);
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

/* --- Layout Container --- */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* --- Typography Utilities --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(37, 99, 255, 0.12);
  border: 1px solid rgba(37, 99, 255, 0.35);
  border-radius: var(--radius-full);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  box-shadow: 0 0 20px rgba(37, 99, 255, 0.15);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px auto;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 18px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-body);
  line-height: 1.7;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-smooth);
  border: 1px solid transparent;
  outline: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(37, 99, 255, 0.5), 0 0 15px rgba(56, 189, 248, 0.4);
}

.btn-secondary {
  background: rgba(17, 24, 39, 0.8);
  color: var(--text-main);
  border-color: var(--border-subtle);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-store {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(17, 24, 39, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  color: #ffffff;
  text-decoration: none;
  transition: all var(--transition-smooth);
  backdrop-filter: blur(10px);
}
.btn-store:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cyan);
  background: rgba(22, 32, 50, 0.9);
}
.btn-store svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.btn-store-text {
  text-align: left;
  line-height: 1.2;
}
.btn-store-text small {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.btn-store-text strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: all var(--transition-smooth);
  padding: 20px 0;
}

.site-header.scrolled {
  background: var(--bg-glass-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
  border: 1.5px solid var(--primary-light);
  box-shadow: 0 0 15px rgba(37, 99, 255, 0.4);
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-body);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}
.nav-link:hover,
.nav-link.active {
  color: #ffffff;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: width var(--transition-smooth);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hamburger-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 8px;
}
.hamburger-btn svg {
  width: 26px;
  height: 26px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 160px 0 100px 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 60px;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(37, 99, 255, 0.1);
  border: 1px solid rgba(37, 99, 255, 0.3);
  padding: 6px 18px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

.hero-pill-badge {
  background: var(--primary);
  color: #fff;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  line-height: 1.08;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-trust-badges {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-body);
}
.trust-item svg {
  color: var(--accent-cyan);
  width: 18px;
  height: 18px;
}

/* Simulated Phone Mockup */
.hero-visual-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
}

.mockup-glow {
  position: absolute;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(37, 99, 255, 0.3) 0%, rgba(56, 189, 248, 0.15) 50%, transparent 70%);
  filter: blur(60px);
  z-index: 0;
}

.phone-mockup {
  position: relative;
  z-index: 1;
  width: 315px;
  height: 685px;
  background: #000000;
  border: 10px solid #1e293b;
  border-radius: 46px;
  box-shadow: 0 25px 60px -10px rgba(0, 0, 0, 0.8), 0 0 35px rgba(37, 99, 255, 0.3);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: floatMockup 6s ease-in-out infinite;
}

@keyframes floatMockup {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.phone-notch {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 110px;
  height: 18px;
  background: #1e293b;
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
  z-index: 10;
}

.phone-screen-container {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
  background: #000000;
  border-radius: 36px;
}

.phone-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.mock-app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mock-user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}
.mock-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}
.mock-greeting small {
  font-size: 0.7rem;
  color: var(--text-muted);
}
.mock-greeting strong {
  display: block;
  font-size: 0.85rem;
}

.mock-active-card {
  background: linear-gradient(135deg, rgba(37, 99, 255, 0.2) 0%, rgba(56, 189, 248, 0.1) 100%);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-md);
  padding: 14px;
  position: relative;
  overflow: hidden;
}
.mock-active-badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-bottom: 6px;
}
.mock-workout-title {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 4px;
}
.mock-workout-meta {
  font-size: 0.75rem;
  color: var(--text-body);
  display: flex;
  gap: 12px;
}

.mock-stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.mock-stat-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 10px;
  text-align: center;
}
.mock-stat-num {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent-cyan);
}
.mock-stat-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.mock-exercise-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mock-exercise-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}
.mock-ex-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.mock-ex-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
}
.mock-ex-name {
  font-size: 0.78rem;
  font-weight: 600;
}
.mock-ex-sets {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Floating floating pills on mockup */
.floating-stat-badge {
  position: absolute;
  background: rgba(17, 24, 39, 0.85);
  border: 1px solid rgba(56, 189, 248, 0.35);
  backdrop-filter: blur(12px);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  z-index: 5;
}
.floating-left {
  top: 15%;
  left: -40px;
}
.floating-right {
  bottom: 20%;
  right: -30px;
}
.badge-icon-box {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(37, 99, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

/* ==========================================================================
   Metrics Bar
   ========================================================================== */
.metrics-section {
  padding: 30px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(17, 24, 39, 0.3);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.metric-item {
  padding: 15px;
}
.metric-num {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}
.metric-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.metric-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Core Features Section
   ========================================================================== */
.features-section {
  padding: 120px 0;
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: all var(--transition-smooth);
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}
.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-active);
  box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.5), 0 0 25px rgba(37, 99, 255, 0.15);
  background: var(--bg-card-hover);
}
.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(37, 99, 255, 0.12);
  border: 1px solid rgba(37, 99, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  color: var(--accent-cyan);
  transition: transform var(--transition-smooth);
}
.feature-card:hover .feature-icon-wrapper {
  transform: scale(1.08);
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 0 20px rgba(37, 99, 255, 0.4);
}
.feature-icon-wrapper svg {
  width: 28px;
  height: 28px;
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.feature-desc {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.65;
}

/* ==========================================================================
   Interactive Workout Explorer (Simulator)
   ========================================================================== */
.workout-explorer-section {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent 0%, rgba(17, 24, 39, 0.5) 50%, transparent 100%);
  position: relative;
}

.interactive-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
}

.muscle-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
}

.muscle-tab-btn {
  padding: 10px 22px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.muscle-tab-btn:hover {
  color: #fff;
  border-color: var(--primary-light);
}
.muscle-tab-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(37, 99, 255, 0.35);
}

.explorer-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 36px;
  align-items: center;
}

.muscle-image-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  height: 380px;
}
.muscle-image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.muscle-image-card:hover img {
  transform: scale(1.05);
}
.muscle-image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  background: linear-gradient(180deg, transparent 0%, rgba(7, 11, 20, 0.95) 100%);
}

.workout-details-box {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.routine-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.routine-title {
  font-size: 1.8rem;
  font-weight: 800;
}
.routine-meta-badges {
  display: flex;
  gap: 10px;
}
.meta-badge {
  padding: 6px 14px;
  background: rgba(37, 99, 255, 0.12);
  border: 1px solid rgba(37, 99, 255, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.routine-exercise-table {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.routine-ex-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  transition: background var(--transition-fast);
}
.routine-ex-row:hover {
  background: rgba(37, 99, 255, 0.08);
  border-color: rgba(37, 99, 255, 0.25);
}
.ex-number {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  margin-right: 14px;
}
.ex-title-wrap {
  display: flex;
  align-items: center;
}
.ex-name-text {
  font-weight: 600;
  font-size: 1rem;
}
.ex-targets-text {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.ex-sets-pill {
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Interactive Exercise Library Search
   ========================================================================== */
.exercise-library-section {
  padding: 100px 0;
}

.library-controls {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto 40px auto;
}

.search-bar-wrap {
  position: relative;
}
.search-input {
  width: 100%;
  padding: 16px 20px 16px 54px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: #fff;
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: all var(--transition-smooth);
}
.search-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.25);
  background: var(--bg-card-hover);
}
.search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 22px;
  height: 22px;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.filter-chip {
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-body);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.filter-chip:hover {
  color: #fff;
  border-color: var(--primary-light);
}
.filter-chip.active {
  background: rgba(37, 99, 255, 0.2);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  font-weight: 600;
}

.exercises-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ex-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition-smooth);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.ex-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-active);
  box-shadow: var(--shadow-md);
  background: var(--bg-card-hover);
}
.ex-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}
.ex-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}
.ex-level-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}
.level-beginner {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
  border: 1px solid rgba(34, 197, 94, 0.3);
}
.level-intermediate {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
}
.level-advanced {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.ex-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.ex-pill {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}
.ex-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.ex-action-btn {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Modal Popup for Exercise Instructions */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 13, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-smooth);
}
.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}
.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 580px;
  padding: 32px;
  position: relative;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.8), 0 0 40px rgba(37, 99, 255, 0.2);
  transform: scale(0.95);
  transition: transform var(--transition-smooth);
}
.modal-backdrop.open .modal-box {
  transform: scale(1);
}
.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.06);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}
.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ==========================================================================
   Comparison Section (Why Us vs Bloated Apps)
   ========================================================================== */
.comparison-section {
  padding: 100px 0;
  background: rgba(17, 24, 39, 0.2);
}

.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.comparison-table th,
.comparison-table td {
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.comparison-table th {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.02);
}
.comparison-table th.highlight-col {
  background: rgba(37, 99, 255, 0.12);
  color: var(--accent-cyan);
  border-left: 1px solid rgba(37, 99, 255, 0.3);
  border-right: 1px solid rgba(37, 99, 255, 0.3);
}
.comparison-table td.highlight-col {
  background: rgba(37, 99, 255, 0.05);
  border-left: 1px solid rgba(37, 99, 255, 0.2);
  border-right: 1px solid rgba(37, 99, 255, 0.2);
  font-weight: 600;
  color: #fff;
}
.check-icon {
  color: var(--success);
  width: 20px;
  height: 20px;
  vertical-align: middle;
}
.cross-icon {
  color: #ef4444;
  width: 20px;
  height: 20px;
  vertical-align: middle;
}

/* ==========================================================================
   Testimonials Section
   ========================================================================== */
.testimonials-section {
  padding: 100px 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform var(--transition-smooth);
}
.testimonial-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-active);
  box-shadow: var(--shadow-md);
}
.rating-stars {
  display: flex;
  gap: 4px;
  color: #f59e0b;
  margin-bottom: 16px;
}
.testimonial-text {
  font-size: 1rem;
  color: var(--text-bright);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}
.reviewer-info {
  display: flex;
  align-items: center;
  gap: 12px;
}
.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
}
.reviewer-name {
  font-weight: 700;
  font-size: 0.95rem;
}
.reviewer-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-section {
  padding: 100px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}
.faq-item.open {
  border-color: var(--primary-light);
  box-shadow: 0 0 20px rgba(37, 99, 255, 0.15);
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  background: transparent;
  border: none;
  color: #fff;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--accent-cyan);
  transition: transform var(--transition-smooth);
}
.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-smooth), padding var(--transition-smooth);
  color: var(--text-body);
  font-size: 0.98rem;
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 28px 24px 28px;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta-section {
  padding: 100px 0 120px 0;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(37, 99, 255, 0.25) 0%, rgba(56, 189, 248, 0.15) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 70px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-glow);
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.3) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
}
.cta-title {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 900;
  margin-bottom: 20px;
}
.cta-desc {
  font-size: 1.2rem;
  color: var(--text-bright);
  max-width: 620px;
  margin: 0 auto 36px auto;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Site Footer
   ========================================================================== */
.site-footer {
  background: var(--bg-darker);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 80px 0 40px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 60px;
}

.footer-brand p {
  color: var(--text-body);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 18px 0 24px 0;
  max-width: 320px;
}

.footer-social-links {
  display: flex;
  gap: 12px;
}
.footer-social-link {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-body);
  transition: all var(--transition-fast);
}
.footer-social-link:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.footer-social-link svg {
  width: 18px;
  height: 18px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  color: var(--text-body);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}
.footer-links a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Compliance Pages (Privacy Policy, About Us, Terms)
   ========================================================================== */
.policy-page-header {
  padding: 150px 0 60px 0;
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: linear-gradient(180deg, rgba(37, 99, 255, 0.08) 0%, transparent 100%);
}

.policy-container {
  max-width: 880px;
  margin: 60px auto 120px auto;
  padding: 0 24px;
}

.policy-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-md);
  margin-bottom: 32px;
}

.policy-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.35);
  border-radius: var(--radius-full);
  color: var(--success);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.policy-card h2 {
  font-size: 1.6rem;
  margin-bottom: 16px;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 12px;
}

.policy-card p {
  color: var(--text-body);
  line-height: 1.8;
  font-size: 1.02rem;
  margin-bottom: 16px;
}

.policy-card ul {
  margin-left: 20px;
  margin-bottom: 18px;
  color: var(--text-body);
  line-height: 1.8;
}

.policy-card li {
  margin-bottom: 8px;
}

.policy-card strong {
  color: var(--text-bright);
}

.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  margin-bottom: 30px;
  transition: transform var(--transition-fast);
}
.back-home-link:hover {
  transform: translateX(-4px);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 50px;
  }
  .hero-desc {
    margin: 0 auto 36px auto;
  }
  .hero-cta-group {
    justify-content: center;
  }
  .hero-trust-badges {
    justify-content: center;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .explorer-grid {
    grid-template-columns: 1fr;
  }
  .muscle-image-card {
    height: 280px;
  }
  .exercises-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(7, 11, 20, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 30px 24px;
    gap: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
  }
  .nav-links.mobile-open {
    display: flex;
  }
  .hamburger-btn {
    display: block;
  }
  .nav-actions .btn-primary {
    display: none;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .exercises-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .interactive-box {
    padding: 24px 16px;
  }
  .policy-card {
    padding: 28px 20px;
  }
  .floating-stat-badge {
    display: none;
  }
}