/* ============================================
   Faithfull Fitness App - Main Stylesheet
   Design: Dark Blue + Neon Green + White
   Mobile-first, fully responsive
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --color-dark: #0a0e27;
  --color-dark-blue: #0d1321;
  --color-navy: #1a2332;
  --color-accent: #00ff88;
  --color-accent-hover: #00cc6a;
  --color-orange: #ff6b35;
  --color-white: #ffffff;
  --color-gray-100: #f8f9fa;
  --color-gray-300: #dee2e6;
  --color-gray-500: #6c757d;
  --color-gray-600: #5a6268;
  --color-gray-700: #495057;
  --font-primary: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-heading: 'Segoe UI', system-ui, sans-serif;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.2);
  --transition: 0.3s ease;
  --radius: 8px;
  --radius-lg: 12px;
  --navbar-height: 70px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-700);
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-hover);
}

ul {
  list-style: none;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

h1 { font-size: clamp(1.75rem, 5vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); margin-bottom: 0.75rem; }

p {
  margin-bottom: 1rem;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-title h2 {
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.section-title p {
  color: var(--color-gray-500);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-dark);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
  background: var(--color-accent);
  color: var(--color-dark);
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.btn-dark:hover {
  background: var(--color-navy);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* ---------- Sticky Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-white);
}

.logo span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  color: var(--color-gray-100);
  font-weight: 500;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 28px;
  height: 22px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(10, 14, 39, 0.92) 0%, rgba(26, 35, 50, 0.88) 100%),
    url('https://images.unsplash.com/photo-1534438327276-14e5300c3a48?w=1920') center/cover no-repeat;
  color: var(--color-white);
  text-align: center;
  padding: calc(var(--navbar-height) + 2rem) 1.25rem 2rem;
}

.hero-content h1 {
  color: var(--color-white);
  margin-bottom: 1rem;
  animation: fadeInUp 0.8s ease-out;
}

.hero-content .highlight {
  color: var(--color-accent);
}

.hero-content .subheadline {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--color-gray-300);
  max-width: 600px;
  margin: 0 auto 2rem;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-buttons .btn {
  min-width: 160px;
}

/* ---------- Scroll Animations (CSS only) ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Features Grid ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-gray-300);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.feature-card .icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  color: var(--color-dark);
  border-radius: var(--radius);
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--color-gray-500);
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* ---------- Screenshots Section ---------- */
.screenshots-section {
  background: var(--color-gray-100);
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  align-items: center;
}

.screenshot-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition);
}

.screenshot-card:hover {
  transform: scale(1.02);
}

.screenshot-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.screenshot-card .caption {
  padding: 1rem;
  text-align: center;
  font-weight: 600;
  color: var(--color-dark);
}

/* ---------- Testimonials ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-accent);
  transition: all var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.testimonial-card .quote {
  font-style: italic;
  color: var(--color-gray-700);
  margin-bottom: 1rem;
}

.testimonial-card .author {
  font-weight: 600;
  color: var(--color-dark);
}

.testimonial-card .role {
  font-size: 0.9rem;
  color: var(--color-gray-500);
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-navy) 100%);
  color: var(--color-white);
  text-align: center;
  padding: 4rem 1.5rem;
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.cta-banner p {
  margin-bottom: 1.5rem;
  color: var(--color-gray-300);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-dark);
  color: var(--color-gray-300);
  padding: 3rem 0 1.5rem;
}

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

.footer h4 {
  color: var(--color-white);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.footer-links a {
  display: block;
  color: var(--color-gray-300);
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-contact p {
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-contact a {
  color: var(--color-gray-300);
}

.footer-contact a:hover {
  color: var(--color-accent);
}

.social-icons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-icons a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-navy);
  color: var(--color-accent);
  border-radius: 50%;
  transition: all var(--transition);
}

.social-icons a:hover {
  background: var(--color-accent);
  color: var(--color-dark);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid var(--color-navy);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-gray-500);
}

/* ---------- Page Header (inner pages) ---------- */
.page-header {
  background: linear-gradient(135deg, rgba(10, 14, 39, 0.95) 0%, rgba(26, 35, 50, 0.9) 100%),
    url('https://images.unsplash.com/photo-1571019614242-c5c5dee9f50b?w=1920') center/cover no-repeat;
  color: var(--color-white);
  padding: calc(var(--navbar-height) + 4rem) 1.5rem 4rem;
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--color-gray-300);
  margin-bottom: 0;
}

/* ---------- About Page ---------- */
.mission-vision {
  display: grid;
  gap: 2rem;
  margin-bottom: 3rem;
}

.mission-vision .card {
  background: var(--color-gray-100);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.value-item {
  text-align: center;
  padding: 1.5rem;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.value-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.value-item .icon {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.team-card {
  text-align: center;
  padding: 1.5rem;
}

.team-card .avatar {
  width: 120px;
  height: 120px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-accent);
}

.team-card h3 {
  margin-bottom: 0.25rem;
}

.team-card .role {
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* ---------- Services Page ---------- */
.service-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 4rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-gray-300);
}

.service-block:last-child {
  border-bottom: none;
}

.service-block:nth-child(even) .service-image {
  order: 2;
}

.service-block:nth-child(even) .service-content {
  order: 1;
}

.service-block .service-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.service-block .service-image img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.service-block ul {
  margin: 1rem 0;
}

.service-block ul li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--color-gray-700);
}

.service-block ul li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* ---------- Contact Page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.contact-info-card {
  background: var(--color-gray-100);
  padding: 2rem;
  border-radius: var(--radius-lg);
  height: fit-content;
}

.contact-info-card h3 {
  margin-bottom: 1rem;
  color: var(--color-dark);
}

.contact-info-card a[href^="tel"] {
  color: var(--color-dark);
  font-weight: 600;
}

.contact-info-card a[href^="tel"]:hover {
  color: var(--color-accent);
}

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

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.2);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-group .error {
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.form-group input.invalid,
.form-group textarea.invalid {
  border-color: #dc3545;
}

.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  height: 300px;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.business-hours {
  margin-top: 1.5rem;
}

.business-hours h4 {
  margin-bottom: 0.75rem;
  color: var(--color-dark);
}

.business-hours p {
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

/* ---------- Legal Pages (Terms, Privacy) ---------- */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h2 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  font-size: 1.35rem;
}

.legal-content h3 {
  margin-top: 1.5rem;
  font-size: 1.15rem;
}

.legal-content ul {
  margin: 0.75rem 0 1rem 1.5rem;
}

.legal-content ul li {
  margin-bottom: 0.35rem;
  list-style: disc;
  color: var(--color-gray-700);
}

.legal-content p {
  margin-bottom: 0.75rem;
}

.legal-content .updated {
  color: var(--color-gray-500);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

/* ---------- Subscribe / Unsubscribe ---------- */
.subscribe-box {
  max-width: 480px;
  margin: 2rem auto 4rem;
  padding: 2.5rem;
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.subscribe-box h2 {
  text-align: center;
  margin-bottom: 1rem;
}

.subscribe-box p {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--color-gray-600);
}

.subscribe-box .btn {
  width: 100%;
  padding: 1rem;
}

.message-success {
  background: #d4edda;
  color: #155724;
  padding: 1rem;
  border-radius: var(--radius);
  margin-top: 1rem;
  text-align: center;
  display: none;
}

.message-success.show {
  display: block;
}

.message-error {
  background: #f8d7da;
  color: #721c24;
  padding: 1rem;
  border-radius: var(--radius);
  margin-top: 1rem;
  text-align: center;
  display: none;
}

.message-error.show {
  display: block;
}

/* ---------- Responsive: Tablet ---------- */
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }

  .service-block {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- Responsive: Desktop ---------- */
@media (min-width: 992px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* ---------- Mobile: Hamburger visible ---------- */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.98);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    transform: translateY(-150%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow-lg);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links a {
    font-size: 1.1rem;
  }
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-0 { margin-bottom: 0; }