@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ==========================================================================
   DESIGN SYSTEM & VARIABLES (AESTHETICS: APPLE MINIMALISM)
   ========================================================================== */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-dark: #1d1d1f;
  --bg-dark-pure: #000000;
  
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-muted: #a1a1a6;
  --text-light: #f5f5f7;
  --text-light-muted: #86868b;

  --accent-blue: #0071e3;
  --accent-blue-hover: #0077ed;
  --accent-whatsapp: #00c74f; /* Custom premium green */
  --accent-whatsapp-hover: #00b045;
  
  --border-color: #d2d2d7;
  --border-dark: #333336;
  --max-width: 1080px;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  --transition-smooth: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-fast: all 0.2s ease;
}

/* ==========================================================================
   RESET & GLOBAL STYLES
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
}

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

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

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 120px 0;
  border-bottom: 1px solid var(--border-color);
}

section:last-of-type {
  border-bottom: none;
}

.section-bg-secondary {
  background-color: var(--bg-secondary);
}

.section-bg-dark {
  background-color: var(--bg-dark);
  color: var(--text-light);
  border-bottom: 1px solid var(--border-dark);
}

/* Typography */
.text-center { text-align: center; }

.section-tag {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 20px;
}

.section-title.large {
  font-size: 3.5rem;
}

.section-subtitle {
  font-size: 1.35rem;
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 720px;
  margin: 0 auto 60px auto;
  line-height: 1.45;
}

.section-bg-dark .section-subtitle {
  color: var(--text-muted);
}

/* ==========================================================================
   BUTTONS (APPLE STYLE)
   ========================================================================== */
.btn-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 980px;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
  gap: 8px;
}

.btn-primary {
  background-color: var(--accent-blue);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--accent-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 113, 227, 0.3);
}

.btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: #e8e8ed;
  transform: translateY(-2px);
}

.btn-whatsapp {
  background-color: var(--accent-whatsapp);
  color: #ffffff;
}

.btn-whatsapp:hover {
  background-color: var(--accent-whatsapp-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 199, 79, 0.3);
}

.btn-dark {
  background-color: var(--bg-dark);
  color: #ffffff;
}

.btn-dark:hover {
  background-color: #000000;
  transform: translateY(-2px);
}

.btn-light {
  background-color: #ffffff;
  color: var(--bg-dark);
}

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

/* ==========================================================================
   HEADER (STICKY & GLASSMORPHISM)
   ========================================================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 52px;
  background-color: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  z-index: 1000;
  transition: var(--transition-fast);
}

header.scrolled {
  background-color: rgba(255, 255, 255, 0.85);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.logo svg {
  width: 24px;
  height: 24px;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
}

.nav-links a:hover {
  color: var(--text-primary);
}

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

.nav-btn {
  font-size: 0.75rem;
  padding: 6px 14px;
  border-radius: 980px;
}

.linkedin-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.linkedin-icon:hover {
  color: #0077b5; /* LinkedIn brand blue */
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition-fast);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding-top: 140px;
  padding-bottom: 100px;
  background-color: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  text-align: left;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--text-primary);
}

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

.hero-subtitle {
  font-size: 1.4rem;
  line-height: 1.45;
  color: var(--text-secondary);
  margin-bottom: 36px;
  font-weight: 400;
}

.hero-badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.hero-badge {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  padding: 6px 14px;
  border-radius: 980px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
  background-color: var(--bg-secondary);
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: var(--transition-smooth);
}

.hero-image-wrapper:hover .hero-image {
  transform: scale(1.03);
}

/* ==========================================================================
   VIDEO PLACEHOLDER SECTION (APPLE VIDEO PLAYER DESIGN)
   ========================================================================== */
.video-section {
  background-color: var(--bg-secondary);
  padding: 80px 0;
}

.video-container {
  max-width: 800px;
  margin: 0 auto;
}

.video-player-mock {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
  background-color: #000000;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Video Background Image (Placeholder visual) */
.video-thumbnail {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1d1d1f 0%, #000000 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 30px;
  text-align: center;
  color: #ffffff;
}

.video-thumbnail-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.45;
  object-fit: cover;
}

.video-overlay-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 500px;
}

.video-play-btn {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 24px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.video-play-btn svg {
  width: 26px;
  height: 26px;
  fill: #ffffff;
  margin-left: 4px;
  transition: var(--transition-fast);
}

.video-player-mock:hover .video-play-btn {
  transform: scale(1.08);
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.6);
}

.video-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.video-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ==========================================================================
   VALUES & CREDENTIALS SECTION
   ========================================================================== */
.credentials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 80px;
}

.credential-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 40px 32px;
  border-radius: 20px;
  transition: var(--transition-smooth);
}

.credential-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.04);
  border-color: #b2b2b7;
}

.credential-icon {
  width: 48px;
  height: 48px;
  color: var(--accent-blue);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.credential-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.credential-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Detailed Profile block */
.profile-block {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
  margin-top: 100px;
  padding-top: 80px;
  border-top: 1px solid var(--border-color);
}

.profile-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.stat-item {
  padding: 24px;
  background-color: var(--bg-secondary);
  border-radius: 16px;
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-blue);
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.profile-text h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.profile-text p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.profile-text ul {
  list-style: none;
}

.profile-text li {
  position: relative;
  padding-left: 24px;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.profile-text li::before {
  content: "•";
  position: absolute;
  left: 8px;
  color: var(--accent-blue);
  font-weight: bold;
}

/* ==========================================================================
   METHODOLOGY (DE LA COMPLEXITÉ À LA CLARTÉ)
   ========================================================================== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.method-card {
  position: relative;
  background-color: var(--bg-primary);
  padding: 40px 28px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.method-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.04);
  border-color: #b2b2b7;
}

.method-number {
  font-size: 3.5rem;
  font-weight: 300;
  color: var(--border-color);
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
  transition: var(--transition-smooth);
}

.method-card:hover .method-number {
  color: var(--accent-blue);
  font-weight: 400;
}

.method-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.method-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ==========================================================================
   FORMULES & OUTILS SECTION
   ========================================================================== */
.formulas-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.formula-card-group {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.formula-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 30px;
  border-radius: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-smooth);
}

.formula-card:hover {
  border-color: #b2b2b7;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.03);
}

.formula-info {
  max-width: 70%;
}

.formula-info h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.formula-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
}

.formula-badge {
  background-color: var(--bg-secondary);
  color: var(--accent-blue);
  padding: 8px 16px;
  border-radius: 980px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* Technology focus block */
.tech-focus-card {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: 50px 40px;
  border-radius: 24px;
  border: 1px solid var(--border-dark);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.tech-header h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.tech-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 30px;
}

.tech-features-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

.tech-feature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.tech-feature-icon {
  color: var(--accent-blue);
  flex-shrink: 0;
  margin-top: 2px;
}

.tech-feature-text h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.tech-feature-text p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

.rate-badge {
  align-self: flex-start;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 10px 20px;
  border-radius: 980px;
  font-size: 0.9rem;
  font-weight: 500;
}

.rate-badge strong {
  color: #ffffff;
  font-weight: 700;
}

/* ==========================================================================
   TESTIMONIALS (CAROUSEL / SLIDER)
   ========================================================================= */
.testimonials-section {
  position: relative;
  overflow: hidden;
}

.testimonials-carousel-wrapper {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.testimonials-track-container {
  overflow: hidden;
  position: relative;
  width: 100%;
}

.testimonials-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
  width: 100%;
}

.testimonial-slide {
  min-width: 100%;
  width: 100%;
  padding: 10px;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.testimonial-slide.active {
  opacity: 1;
}

.testimonial-card-inner {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 50px 48px;
  border-radius: 24px;
  position: relative;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.02);
}

.quote-icon {
  font-size: 5rem;
  font-family: 'Times New Roman', serif;
  color: rgba(0, 113, 227, 0.08);
  position: absolute;
  top: 15px;
  left: 30px;
  line-height: 1;
  pointer-events: none;
}

.testimonial-text {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 28px;
  font-weight: 400;
  font-style: italic;
  position: relative;
  z-index: 2;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-info h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* Carousel controls */
.carousel-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 36px;
  padding: 0 10px;
}

.carousel-dots {
  display: flex;
  gap: 8px;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--border-color);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: var(--transition-fast);
}

.carousel-dot.active {
  background-color: var(--accent-blue);
  transform: scale(1.2);
}

.carousel-btns {
  display: flex;
  gap: 12px;
}

.carousel-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.carousel-btn:hover {
  background-color: var(--bg-secondary);
  border-color: var(--text-secondary);
}

/* ==========================================================================
   CONTACT SECTION & FORM
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 60px;
  align-items: start;
}

.contact-info-block {
  padding-right: 20px;
}

.contact-info-block h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.contact-info-block p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 40px;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-method-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 24px;
  background-color: var(--bg-secondary);
  border-radius: 16px;
  transition: var(--transition-smooth);
}

.contact-method-card:hover {
  transform: translateY(-2px);
}

.contact-method-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--accent-blue);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
  flex-shrink: 0;
}

.contact-method-card.whatsapp-method .contact-method-icon {
  color: var(--accent-whatsapp);
}

.contact-method-details h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.contact-method-details p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

/* Contact form styling (Premium Apple aesthetic) */
.contact-form-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 48px;
  border-radius: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
}

.form-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 24px;
  position: relative;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  background-color: var(--bg-secondary);
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--text-primary);
  transition: var(--transition-fast);
  outline: none;
}

.form-control:focus {
  background-color: var(--bg-primary);
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-note {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: -12px;
  margin-bottom: 24px;
  display: block;
}

.submit-btn-wrapper {
  text-align: right;
}

.form-success-message {
  display: none;
  background-color: rgba(0, 199, 79, 0.1);
  border: 1px solid var(--accent-whatsapp);
  color: #008f35;
  padding: 16px;
  border-radius: 12px;
  font-size: 0.95rem;
  margin-bottom: 24px;
  text-align: center;
  font-weight: 500;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 60px 0 40px 0;
  font-size: 0.75rem;
  line-height: 1.6;
  border-top: 1px solid var(--border-color);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
}

.footer-brand h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.footer-brand p {
  max-width: 300px;
  margin-bottom: 20px;
}

.footer-links h4 {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-legal-links {
  display: flex;
  gap: 16px;
}

.footer-legal-links a:hover {
  color: var(--text-primary);
}

/* ==========================================================================
   SCROLL ANIMATIONS UTILITIES
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

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

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
  
  .section-title {
    font-size: 2.25rem;
  }
}

@media (max-width: 768px) {
  section {
    padding: 80px 0;
  }
  
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-content {
    text-align: center;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-badge-group, .btn-group {
    justify-content: center;
  }
  
  .hero-image-wrapper {
    max-width: 500px;
    margin: 0 auto;
  }

  .credentials-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .profile-block {
    grid-template-columns: 1fr;
    gap: 40px;
    margin-top: 60px;
    padding-top: 40px;
  }

  .method-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .formulas-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-info-block {
    padding-right: 0;
    text-align: center;
  }

  .contact-methods {
    align-items: center;
  }
  
  .contact-method-card {
    width: 100%;
    max-width: 400px;
  }

  .form-group-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .mobile-nav-toggle {
    display: block;
    z-index: 1001;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--bg-primary);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
    flex-direction: column;
    padding: 80px 40px 40px 40px;
    align-items: flex-start;
    justify-content: flex-start;
    transition: var(--transition-smooth);
    z-index: 1000;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-actions {
    margin-top: 20px;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.15rem;
  }

  .section-title {
    font-size: 1.85rem;
  }

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

  .testimonial-card-inner {
    padding: 30px 24px;
  }

  .testimonial-text {
    font-size: 1.05rem;
  }

  .contact-form-card {
    padding: 24px;
  }
}