@media (max-width: 600px) {
  .navbar-sinfony .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-left: 8px;
    padding-right: 8px;
  }
  .navbar-brand-sinfony {
    order: 1;
  }
  .navbar-toggle-sinfony {
    order: 2;
    margin-left: auto;
    margin-right: 0;
    z-index: 1001;
  }
  .navbar-nav-sinfony {
    order: 3;
  }
}
/**
 * Sinfony Design System - Theme CSS
 * Version 1.0.0
 * 
 * Este archivo aplica el Design System de Sinfony al sitio web de SamSoft
 */

/* =========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ========================================= */

:root {
  /* Colors - Primary (Cyan from Sinfony logo) */
  --color-primary-50: #F0F9FF;
  --color-primary-100: #E0F2FE;
  --color-primary-200: #BAE6FD;
  --color-primary-300: #7DD3FC;
  --color-primary-400: #38BDF8;
  --color-primary-500: #0EA5E9;
  --color-primary-600: #0284C7;
  --color-primary-700: #0369A1;
  --color-primary-800: #075985;
  --color-primary-900: #0C4A6E;
  
  /* Colors - Secondary (Navy from logo text) */
  --color-secondary-500: #0F172A;
  --color-secondary-600: #1E293B;
  --color-secondary-700: #334155;
  
  /* Colors - Neutral */
  --color-neutral-50: #F8FAFC;
  --color-neutral-100: #F1F5F9;
  --color-neutral-200: #E2E8F0;
  --color-neutral-300: #CBD5E1;
  --color-neutral-400: #94A3B8;
  --color-neutral-500: #64748B;
  --color-neutral-600: #475569;
  --color-neutral-700: #334155;
  --color-neutral-800: #1E293B;
  --color-neutral-900: #0F172A;
  
  /* Colors - State */
  --color-success-50: #F0FDF4;
  --color-success-100: #DCFCE7;
  --color-success-500: #22C55E;
  --color-success-600: #16A34A;
  --color-success-700: #15803D;
  
  --color-warning-50: #FFFBEB;
  --color-warning-100: #FEF3C7;
  --color-warning-500: #F59E0B;
  --color-warning-600: #D97706;
  --color-warning-700: #B45309;
  
  --color-error-50: #FEF2F2;
  --color-error-100: #FEE2E2;
  --color-error-500: #EF4444;
  --color-error-600: #DC2626;
  --color-error-700: #B91C1C;
  
  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* =========================================
   CSS RESET & BASE
   ========================================= */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-neutral-800);
  background-color: var(--color-neutral-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-primary);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-neutral-900);
  margin-top: 0;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-top: 0;
  margin-bottom: var(--spacing-4);
}

a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-700);
}

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

/* =========================================
   NAVBAR - Rediseñado
   ========================================= */

.navbar-sinfony {
  background: white;
  border-bottom: 1px solid var(--color-neutral-200);
  padding: var(--spacing-4) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.navbar-sinfony .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

@media (max-width: 600px) {
  .navbar-sinfony .container {
    padding-left: 8px;
    padding-right: 8px;
  }
}

.navbar-brand-sinfony {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  text-decoration: none;
}

.navbar-brand-sinfony .logo-icon {
  width: 36px;
  height: 36px;
}

.navbar-brand-sinfony .logo-text {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-neutral-900);
  letter-spacing: -0.02em;
}

.navbar-brand-sinfony img {
  height: 36px;
  width: auto;
}

.navbar-brand-sinfony span {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-neutral-900);
}

.navbar-nav-sinfony {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar-nav-sinfony li a {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-neutral-600);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.navbar-nav-sinfony li a:hover {
  color: var(--color-primary-600);
  background: var(--color-primary-50);
}

.navbar-nav-sinfony li.active a {
  color: var(--color-primary-700);
  background: var(--color-primary-50);
}

.navbar-nav-sinfony li a i {
  width: 18px;
  height: 18px;
}

.navbar-toggle-sinfony {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--color-neutral-600);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.navbar-toggle-sinfony:hover {
  background: var(--color-neutral-100);
}

.navbar-toggle-sinfony i {
  width: 24px;
  height: 24px;
}

/* =========================================
   HERO SECTION
   ========================================= */

.hero-sinfony {
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-800) 100%);
  padding: var(--spacing-20) 0;
  position: relative;
  overflow: hidden;
}

.hero-sinfony::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
}

.hero-text {
  color: white;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-3);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: var(--spacing-6);
}

.hero-badge i {
  width: 16px;
  height: 16px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-6);
  color: white;
}

.hero-title span {
  display: block;
  background: linear-gradient(90deg, #38BDF8, #7DD3FC);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.7;
  opacity: 0.9;
  margin-bottom: var(--spacing-8);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-10);
  margin-top: var(--spacing-8);
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-value {
  font-size: 2.5rem;
  font-weight: 700;
}

.hero-stat-label {
  font-size: 14px;
  opacity: 0.8;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-4);
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

/* =========================================
   BUTTONS - Design System
   ========================================= */

.btn-sinfony {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-family-primary);
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-sinfony i {
  width: 18px;
  height: 18px;
}

.btn-sinfony-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: 13px;
}

.btn-sinfony-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: 16px;
}

.btn-sinfony-primary {
  background: var(--color-primary-500);
  color: white;
}

.btn-sinfony-primary:hover {
  background: var(--color-primary-600);
  color: white;
}

.btn-sinfony-secondary {
  background: white;
  color: var(--color-primary-600);
  border: 1px solid var(--color-primary-300);
}

.btn-sinfony-secondary:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
}

.btn-sinfony-outline-light {
  background: transparent;
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-sinfony-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
  color: white;
}

.btn-sinfony-ghost {
  background: transparent;
  color: var(--color-neutral-600);
}

.btn-sinfony-ghost:hover {
  background: var(--color-neutral-100);
  color: var(--color-neutral-800);
}

/* =========================================
   SECTIONS
   ========================================= */

.section-sinfony {
  padding: var(--spacing-20) 0;
}

.section-sinfony .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--spacing-12);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-1) var(--spacing-3);
  background: var(--color-primary-50);
  color: var(--color-primary-600);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-4);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-neutral-900);
  margin-bottom: var(--spacing-4);
}

.section-description {
  font-size: 1.125rem;
  color: var(--color-neutral-500);
  line-height: 1.7;
}

.section-sinfony.section-alt {
  background: white;
}

/* =========================================
   FEATURES GRID
   ========================================= */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

.feature-card {
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--spacing-8);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-primary-50);
  color: var(--color-primary-600);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-5);
}

.feature-icon i {
  width: 28px;
  height: 28px;
}

.feature-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-neutral-900);
  margin-bottom: var(--spacing-3);
}

.feature-card p {
  font-size: 14px;
  color: var(--color-neutral-500);
  line-height: 1.6;
  margin-bottom: var(--spacing-4);
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary-600);
}

.feature-link:hover {
  color: var(--color-primary-700);
}

.feature-link i {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.feature-link:hover i {
  transform: translateX(4px);
}

/* =========================================
   ABOUT SECTION
   ========================================= */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
}

.about-content h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-6);
}

.about-content p {
  font-size: 1rem;
  color: var(--color-neutral-600);
  line-height: 1.8;
  margin-bottom: var(--spacing-4);
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4);
  margin-top: var(--spacing-6);
}

.about-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-neutral-700);
}

.about-feature i {
  width: 20px;
  height: 20px;
  color: var(--color-success-500);
}

.about-image {
  position: relative;
}

.about-image img {
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

.about-image::before {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 200px;
  height: 200px;
  background: var(--color-primary-100);
  border-radius: var(--radius-2xl);
  z-index: -1;
}

/* =========================================
   CLIENTS SHOWCASE (Carrusel de notarías)
   ========================================= */

.clients-section {
  padding: var(--spacing-16) 0;
  background: var(--color-neutral-50);
}

.clients-carousel-wrapper {
  position: relative;
  margin: var(--spacing-10) 0;
  overflow: hidden;
}

.clients-carousel-wrapper::before,
.clients-carousel-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}

.clients-carousel-wrapper::before {
  left: 0;
  background: linear-gradient(to right, var(--color-neutral-50) 0%, transparent 100%);
}

.clients-carousel-wrapper::after {
  right: 0;
  background: linear-gradient(to left, var(--color-neutral-50) 0%, transparent 100%);
}

.clients-carousel {
  overflow: hidden;
}

.clients-track {
  display: flex;
  gap: var(--spacing-8);
  animation: scroll-clients 30s linear infinite;
  width: max-content;
}

.clients-track:hover {
  animation-play-state: paused;
}

@keyframes scroll-clients {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.client-logo-item {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 120px;
  height: 80px;
  padding: var(--spacing-4);
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-neutral-200);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.client-logo-item:hover {
  border-color: var(--color-primary-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.client-logo-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(30%);
  opacity: 0.85;
  transition: all var(--transition-normal);
}

.client-logo-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

.clients-stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-8) var(--spacing-6);
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-neutral-100);
}

.clients-stat {
  text-align: center;
}

.clients-stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary-600);
  line-height: 1.2;
}

.clients-stat-label {
  font-size: 13px;
  color: var(--color-neutral-500);
  margin-top: var(--spacing-1);
}

/* About Content Full Width */
.about-content-full {
  max-width: 900px;
  margin: 0 auto;
}

.about-content-full h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-neutral-900);
  margin-bottom: var(--spacing-8);
  text-align: center;
}

.about-text-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-10);
}

.about-text-col p {
  font-size: 1rem;
  color: var(--color-neutral-600);
  line-height: 1.8;
  margin-bottom: var(--spacing-4);
}

.about-text-col p:last-child {
  margin-bottom: 0;
}

.about-features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-4);
  padding: var(--spacing-8);
  background: var(--color-neutral-50);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--color-neutral-100);
}

/* Legacy support */
.clients-showcase {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-neutral-200);
}

.clients-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-neutral-800);
  margin-bottom: var(--spacing-5);
  padding-bottom: var(--spacing-4);
  border-bottom: 1px solid var(--color-neutral-100);
}

.clients-title i {
  width: 20px;
  height: 20px;
  color: var(--color-primary-500);
}

.client-logo {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3);
  background: var(--color-neutral-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-neutral-100);
  transition: all var(--transition-fast);
  min-width: 90px;
}

.client-logo:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-200);
  transform: translateY(-2px);
}

.client-logo img {
  width: 50px;
  height: 50px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.client-logo span {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-neutral-600);
  text-align: center;
  white-space: nowrap;
}

.clients-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-3);
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-neutral-100);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-600);
  line-height: 1.2;
}

.stat-label {
  font-size: 11px;
  color: var(--color-neutral-500);
}

/* =========================================
   STATS SECTION
   ========================================= */

.stats-section {
  background: linear-gradient(135deg, var(--color-secondary-500) 0%, var(--color-secondary-600) 100%);
  padding: var(--spacing-16) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-8);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.stat-item {
  text-align: center;
  color: white;
}

.stat-value {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--spacing-2);
}

.stat-label {
  font-size: 14px;
  opacity: 0.8;
}

/* =========================================
   TUTORIALS PAGE
   ========================================= */

/* Tutorials Stats Bar */
.tutorials-stats {
  background: var(--color-neutral-100);
  padding: var(--spacing-6) 0;
  border-bottom: 1px solid var(--color-neutral-200);
}

.stats-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-12);
  flex-wrap: wrap;
}

.stat-item-inline {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  color: var(--color-neutral-600);
}

.stat-item-inline i {
  width: 24px;
  height: 24px;
  color: var(--color-primary-500);
}

.stat-item-inline .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-secondary-500);
  margin-bottom: 0;
}

.stat-item-inline .stat-label {
  font-size: 14px;
  color: var(--color-neutral-500);
  opacity: 1;
}

/* Category Navigation */
.category-nav-section {
  background: white;
  border-bottom: 1px solid var(--color-neutral-200);
  padding: var(--spacing-4) 0;
  position: sticky;
  top: 64px;
  z-index: 40;
}

.category-tabs {
  display: flex;
  gap: var(--spacing-2);
  overflow-x: auto;
  padding-bottom: var(--spacing-2);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.category-tabs::-webkit-scrollbar {
  height: 4px;
}

.category-tabs::-webkit-scrollbar-track {
  background: var(--color-neutral-100);
  border-radius: 4px;
}

.category-tabs::-webkit-scrollbar-thumb {
  background: var(--color-neutral-300);
  border-radius: 4px;
}

.category-tab {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  background: var(--color-neutral-100);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-neutral-600);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.category-tab i {
  width: 18px;
  height: 18px;
}

.category-tab:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-600);
  border-color: var(--color-primary-200);
}

.category-tab.active {
  background: var(--color-primary-500);
  color: white;
  border-color: var(--color-primary-500);
}

.tab-count {
  background: rgba(0, 0, 0, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
}

.category-tab.active .tab-count {
  background: rgba(255, 255, 255, 0.2);
}

/* Tutorials Section */
.tutorials-section {
  background: var(--color-neutral-50);
  padding: var(--spacing-10) 0 var(--spacing-16);
  min-height: 60vh;
}

/* Search Bar */
.tutorials-search {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-8);
  flex-wrap: wrap;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-3) var(--spacing-4);
  flex: 1;
  max-width: 400px;
  transition: all 0.2s ease;
}

.search-input-wrapper:focus-within {
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.search-input-wrapper i {
  width: 20px;
  height: 20px;
  color: var(--color-neutral-400);
}

.search-input-wrapper input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 14px;
  color: var(--color-neutral-800);
  outline: none;
}

.search-input-wrapper input::placeholder {
  color: var(--color-neutral-400);
}

.results-count {
  font-size: 14px;
  color: var(--color-neutral-500);
  font-weight: 500;
}

/* Tutorials Grid */
.tutorials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-6);
}

/* Video Card */
.video-card {
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--color-neutral-200);
  transition: all 0.3s ease;
}

.video-card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
  border-color: var(--color-primary-200);
}

.video-thumbnail {
  position: relative;
  padding-top: 56.25%; /* 16:9 aspect ratio */
  background: var(--color-neutral-100);
}

.video-thumbnail iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.video-info {
  padding: var(--spacing-4);
}

.video-category {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary-600);
  background: var(--color-primary-50);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-2);
}

.video-category i {
  width: 14px;
  height: 14px;
}

.video-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-secondary-500);
  line-height: 1.4;
  margin: 0;
}

/* No Results */
.no-results {
  text-align: center;
  padding: var(--spacing-16) var(--spacing-6);
}

.no-results i {
  width: 64px;
  height: 64px;
  color: var(--color-neutral-300);
  margin-bottom: var(--spacing-4);
}

.no-results h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-neutral-700);
  margin-bottom: var(--spacing-2);
}

.no-results p {
  color: var(--color-neutral-500);
}

/* Tutorials Page Responsive */
@media (max-width: 1024px) {
  .stats-bar {
    gap: var(--spacing-8);
  }
}

@media (max-width: 768px) {
  .stats-bar {
    gap: var(--spacing-6);
    justify-content: space-around;
  }
  
  .stat-item-inline .stat-value {
    font-size: 1.25rem;
  }
  
  .category-nav-section {
    top: 56px;
  }
  
  .tutorials-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-4);
  }
  
  .tutorials-search {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-input-wrapper {
    max-width: 100%;
  }
  
  .results-count {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .stats-bar {
    flex-direction: column;
    gap: var(--spacing-4);
  }
  
  .stat-item-inline {
    justify-content: center;
  }
  
  .category-tabs {
    gap: var(--spacing-1);
  }
  
  .category-tab {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: 13px;
  }
  
  .category-tab span:not(.tab-count) {
    display: none;
  }
  
  .category-tab i {
    width: 20px;
    height: 20px;
  }
  
  .tutorials-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================
   CTA SECTION
   ========================================= */

.cta-section {
  background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-700) 100%);
  padding: var(--spacing-16) 0;
  text-align: center;
}

.cta-content {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
  color: white;
}

.cta-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-4);
  color: white;
}

.cta-description {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-8);
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
}

/* =========================================
   FOOTER
   ========================================= */

.footer-sinfony {
  background: var(--color-neutral-900);
  color: white;
  padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-12);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.footer-brand .footer-logo-img {
  height: 80px;
  width: auto;
  margin-bottom: var(--spacing-3);
  object-fit: contain;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.footer-brand .footer-logo .logo-icon {
  width: 36px;
  height: 36px;
}

.footer-brand .footer-logo .logo-text {
  font-size: 1.35rem;
  font-weight: 700;
  color: white;
  letter-spacing: -0.02em;
}

.footer-brand img {
  height: 40px;
  width: auto;
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-neutral-400);
  line-height: 1.7;
}

.footer-column h4 {
  font-size: 14px;
  font-weight: 600;
  color: white;
  margin-bottom: var(--spacing-4);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  font-size: 14px;
  color: var(--color-neutral-400);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid var(--color-neutral-800);
  margin-top: var(--spacing-12);
  padding-top: var(--spacing-8);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-6);
  padding-right: var(--spacing-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-size: 13px;
  color: var(--color-neutral-500);
}

.footer-social {
  display: flex;
  gap: var(--spacing-3);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-neutral-800);
  color: var(--color-neutral-400);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-primary-500);
  color: white;
}

.footer-social i {
  width: 18px;
  height: 18px;
}

/* =========================================
   CARDS - General
   ========================================= */

.card-sinfony {
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card-sinfony:hover {
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-md);
}

.card-sinfony-header {
  padding: var(--spacing-5);
  border-bottom: 1px solid var(--color-neutral-100);
}

.card-sinfony-body {
  padding: var(--spacing-5);
}

.card-sinfony-footer {
  padding: var(--spacing-4) var(--spacing-5);
  background: var(--color-neutral-50);
  border-top: 1px solid var(--color-neutral-100);
}

/* =========================================
   FORMS - Design System
   ========================================= */

.form-sinfony {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-5);
}

.form-group-sinfony {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.form-label-sinfony {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-neutral-700);
}

.form-input-sinfony,
.form-textarea-sinfony,
.form-select-sinfony {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-family: var(--font-family-primary);
  font-size: 14px;
  color: var(--color-neutral-800);
  background: white;
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-input-sinfony:hover,
.form-textarea-sinfony:hover,
.form-select-sinfony:hover {
  border-color: var(--color-neutral-400);
}

.form-input-sinfony:focus,
.form-textarea-sinfony:focus,
.form-select-sinfony:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.form-input-sinfony::placeholder,
.form-textarea-sinfony::placeholder {
  color: var(--color-neutral-400);
}

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

.form-actions-sinfony {
  display: flex;
  gap: var(--spacing-3);
  margin-top: var(--spacing-4);
}

/* =========================================
   CAROUSEL OVERRIDE
   ========================================= */

.carousel-sinfony {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.carousel-sinfony .carousel-inner {
  border-radius: var(--radius-2xl);
}

.carousel-sinfony .carousel-caption {
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  padding: var(--spacing-8);
  left: 0;
  right: 0;
  bottom: 0;
  text-align: left;
}

.carousel-sinfony .carousel-caption h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-2);
}

.carousel-sinfony .carousel-caption p {
  font-size: 1rem;
  opacity: 0.9;
}

/* =========================================
   CONTACT PAGE
   ========================================= */

.contact-section {
  padding: var(--spacing-16) 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.contact-info h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-4);
}

.contact-info p {
  color: var(--color-neutral-500);
  margin-bottom: var(--spacing-8);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.contact-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary-50);
  color: var(--color-primary-600);
  border-radius: var(--radius-lg);
}

.contact-item-icon i {
  width: 24px;
  height: 24px;
}

.contact-item-text h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-neutral-800);
  margin-bottom: 2px;
}

.contact-item-text p {
  font-size: 14px;
  color: var(--color-neutral-500);
  margin: 0;
}

.contact-form-wrapper {
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--spacing-8);
}

/* =========================================
   PAGE HEADER
   ========================================= */

.page-header-sinfony {
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-800) 100%);
  padding: var(--spacing-16) 0;
  text-align: center;
  color: white;
}

.page-header-sinfony h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-4);
  color: white;
}

.page-header-sinfony p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* =========================================
   FEATURETTE (Legacy support)
   ========================================= */

.featurette-sinfony {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
  padding: var(--spacing-12) 0;
}

.featurette-sinfony.reverse {
  direction: rtl;
}

.featurette-sinfony.reverse > * {
  direction: ltr;
}

.featurette-content h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-4);
}

.featurette-content h3 {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-primary-500);
  margin-bottom: var(--spacing-4);
}

.featurette-content p {
  font-size: 1rem;
  color: var(--color-neutral-600);
  line-height: 1.8;
}

.featurette-image img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* =========================================
   UTILITIES
   ========================================= */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary-500); }
.text-muted { color: var(--color-neutral-500); }

.bg-primary { background-color: var(--color-primary-500); }
.bg-light { background-color: var(--color-neutral-50); }
.bg-white { background-color: white; }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--spacing-4); }
.mt-8 { margin-top: var(--spacing-8); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-8 { margin-bottom: var(--spacing-8); }

.container-sinfony {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

/* =========================================
   RESPONSIVE
   ========================================= */

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-image {
    display: none;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-8);
  }
  
  .featurette-sinfony {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .navbar-sinfony .container {
    padding: 0 var(--spacing-3);
  }
  
  .navbar-nav-sinfony {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: white;
    padding: var(--spacing-4);
    border-top: 1px solid var(--color-neutral-200);
    box-shadow: var(--shadow-lg);
  }
  
  .navbar-nav-sinfony.show {
    display: flex;
  }
  
  .navbar-toggle-sinfony {
    display: flex;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-4);
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
  }
  
  .stat-value {
    font-size: 2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-4);
    text-align: center;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  /* Clients Section Responsive */
  .clients-section {
    padding: var(--spacing-12) 0;
  }
  
  .clients-stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
  }
  
  .clients-stat-number {
    font-size: 1.5rem;
  }
  
  .client-logo-item {
    width: 100px;
    height: 70px;
    padding: var(--spacing-3);
  }
  
  .clients-carousel-wrapper::before,
  .clients-carousel-wrapper::after {
    width: 40px;
  }
  
  /* About Content Responsive */
  .about-text-columns {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }
  
  .about-features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-3);
    padding: var(--spacing-6);
  }
  
  .about-content-full h2 {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .hero-sinfony {
    padding: var(--spacing-12) 0;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .cta-actions {
    flex-direction: column;
  }
  
  /* Clients Section Mobile */
  .clients-stats-bar {
    grid-template-columns: 1fr 1fr;
    padding: var(--spacing-6) var(--spacing-4);
  }
  
  .clients-stat-number {
    font-size: 1.25rem;
  }
  
  .clients-stat-label {
    font-size: 11px;
  }
  
  .client-logo-item {
    width: 80px;
    height: 60px;
    padding: var(--spacing-2);
  }
  
  /* About Features Mobile */
  .about-features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2);
    padding: var(--spacing-4);
  }
  
  .about-feature {
    font-size: 13px;
  }
}