/* ==========================================================================
   VIOLIN VIỆT NAM - UI/UX PRO MAX DESIGN SYSTEM
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS VARIABLES & THEME TOKENS
   -------------------------------------------------------------------------- */
   :root {
    /* Brand Colors */
    --color-primary: #8B1A2C; /* Burgundy Red - Classic, Passionate */
    --color-primary-light: #A32A3E;
    --color-primary-dark: #6D1120;
    
    --color-secondary: #C9A84C; /* Warm Gold - Premium, Elegant */
    --color-secondary-light: #DFBB5C;
    --color-secondary-dark: #A88A3A;
    
    --color-accent: #1B2A4A; /* Navy Blue - Professional, Trust */
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-50: #F8F9FA;
    --color-gray-100: #F1F3F5;
    --color-gray-200: #E9ECEF;
    --color-gray-300: #DEE2E6;
    --color-gray-400: #CED4DA;
    --color-gray-500: #ADB5BD;
    --color-gray-600: #868E96;
    --color-gray-700: #495057;
    --color-gray-800: #343A40;
    --color-gray-900: #212529;
    --color-black: #121212;
    
    /* Semantic Colors */
    --color-success: #2B8A3E;
    --color-warning: #E67700;
    --color-danger: #C92A2A;
    --color-info: #1864AB;
    
    /* Glassmorphism & Overlays */
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-bg-dark: rgba(18, 18, 18, 0.85);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-border-dark: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
    --overlay-dark: rgba(0, 0, 0, 0.65);
    --overlay-gradient: linear-gradient(135deg, rgba(139, 26, 44, 0.85) 0%, rgba(27, 42, 74, 0.85) 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-secondary: 'Playfair Display', "Times New Roman", Times, serif; /* Elegant serif for headings */
    
    --text-xs: 0.75rem;     /* 12px */
    --text-sm: 0.875rem;    /* 14px */
    --text-base: 1rem;      /* 16px */
    --text-lg: 1.125rem;    /* 18px */
    --text-xl: 1.25rem;     /* 20px */
    --text-2xl: 1.5rem;     /* 24px */
    --text-3xl: 1.875rem;   /* 30px */
    --text-4xl: 2.25rem;    /* 36px */
    --text-5xl: 3rem;       /* 48px */
    --text-6xl: 3.75rem;    /* 60px */
    --text-7xl: 4.5rem;     /* 72px */
    
    --weight-light: 300;
    --weight-normal: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;
    --weight-extrabold: 800;
    
    /* Spacing & Layout */
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */
    --spacing-20: 5rem;     /* 80px */
    --spacing-24: 6rem;     /* 96px */
    --spacing-32: 8rem;     /* 128px */
    
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1440px;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-Index */
    --z-negative: -1;
    --z-0: 0;
    --z-10: 10;
    --z-20: 20;
    --z-30: 30;
    --z-40: 40;
    --z-50: 50; /* Header */
    --z-toast: 100;
    --z-modal: 1000;
  }
  
  /* --------------------------------------------------------------------------
     2. CSS RESET & BASE STYLES
     -------------------------------------------------------------------------- */
  @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&display=swap');
  
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  html {
    font-size: 100%;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  
  body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-gray-50);
    overflow-x: hidden;
  }
  
  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: var(--weight-bold);
    line-height: 1.2;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-4);
  }
  
  h1 { font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl)); }
  h2 { font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl)); }
  h3 { font-size: clamp(var(--text-2xl), 3vw, var(--text-3xl)); }
  h4 { font-size: clamp(var(--text-xl), 2vw, var(--text-2xl)); }
  
  p {
    margin-bottom: var(--spacing-4);
  }
  
  a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
  }
  
  a:hover {
    color: var(--color-primary-dark);
  }
  
  ul, ol {
    list-style: none;
  }
  
  img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
  }
  
  button, input, select, textarea {
    font-family: inherit;
    font-size: 100%;
    margin: 0;
  }
  
  button {
    cursor: pointer;
    background: transparent;
    border: none;
  }
  
  /* --------------------------------------------------------------------------
     3. UTILITY CLASSES
     -------------------------------------------------------------------------- */
  .container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
  }
  
  @media (min-width: 640px) { .container { padding-left: var(--spacing-6); padding-right: var(--spacing-6); } }
  @media (min-width: 1024px) { .container { padding-left: var(--spacing-8); padding-right: var(--spacing-8); } }
  
  .text-center { text-align: center; }
  .text-left { text-align: left; }
  .text-right { text-align: right; }
  
  .mb-1 { margin-bottom: var(--spacing-1); }
  .mb-2 { margin-bottom: var(--spacing-2); }
  .mb-3 { margin-bottom: var(--spacing-3); }
  .mb-4 { margin-bottom: var(--spacing-4); }
  .mb-5 { margin-bottom: var(--spacing-5); }
  .mb-6 { margin-bottom: var(--spacing-6); }
  .mb-8 { margin-bottom: var(--spacing-8); }
  
  .mt-1 { margin-top: var(--spacing-1); }
  .mt-2 { margin-top: var(--spacing-2); }
  .mt-4 { margin-top: var(--spacing-4); }
  .mt-8 { margin-top: var(--spacing-8); }
  
  .py-10 { padding-top: var(--spacing-10); padding-bottom: var(--spacing-10); }
  .py-16 { padding-top: var(--spacing-16); padding-bottom: var(--spacing-16); }
  .py-20 { padding-top: var(--spacing-20); padding-bottom: var(--spacing-20); }
  .py-24 { padding-top: var(--spacing-24); padding-bottom: var(--spacing-24); }
  
  .img-fluid {
    width: 100%;
    height: auto;
    object-fit: cover;
  }
  
  .rounded { border-radius: var(--radius-md); }
  .rounded-lg { border-radius: var(--radius-lg); }
  .rounded-xl { border-radius: var(--radius-xl); }
  .rounded-full { border-radius: var(--radius-full); }
  
  .shadow { box-shadow: var(--shadow-md); }
  .shadow-lg { box-shadow: var(--shadow-lg); }
  .shadow-xl { box-shadow: var(--shadow-xl); }
  
  /* --------------------------------------------------------------------------
     4. BUTTONS & FORMS
     -------------------------------------------------------------------------- */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    background-color: var(--color-primary);
    color: var(--color-white);
    font-weight: var(--weight-semibold);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: var(--text-sm);
    border: 2px solid transparent;
  }
  
  .btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(139, 26, 44, 0.2);
  }
  
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    background-color: transparent;
    color: var(--color-primary);
    font-weight: var(--weight-semibold);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: var(--text-sm);
    border: 2px solid var(--color-primary);
  }
  
  .btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(139, 26, 44, 0.1);
  }
  
  .full-width {
    width: 100%;
  }
  
  .form-group {
    margin-bottom: var(--spacing-4);
  }
  
  input[type="text"],
  input[type="email"],
  textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    color: var(--color-gray-800);
    font-size: var(--text-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  }
  
  input[type="text"]:focus,
  input[type="email"]:focus,
  textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 26, 44, 0.1);
  }
  
  textarea {
    resize: vertical;
    min-height: 120px;
  }
  
  /* --------------------------------------------------------------------------
     5. HEADER & NAVIGATION
     -------------------------------------------------------------------------- */
  .main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    z-index: var(--z-50);
    transition: all var(--transition-base);
    height: 80px;
    display: flex;
    align-items: center;
  }
  
  .main-header.scrolled {
    height: 70px;
    box-shadow: var(--shadow-sm);
  }
  
  .main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
  }
  
  .logo-link {
    display: flex;
    align-items: center;
  }
  
  .logo {
    height: 50px;
    width: auto;
    transition: transform var(--transition-base);
  }
  
  .main-header.scrolled .logo {
    height: 40px;
  }
  
  .nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
  }
  
  .nav-list li a {
    color: var(--color-gray-800);
    font-weight: var(--weight-medium);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    padding: var(--spacing-2) 0;
  }
  
  .nav-list li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
  }
  
  .nav-list li a:hover {
    color: var(--color-primary);
  }
  
  .nav-list li a:hover::after {
    width: 100%;
  }
  
  .menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: var(--z-50);
  }
  
  .menu-toggle .bar {
    height: 3px;
    width: 100%;
    background-color: var(--color-gray-900);
    border-radius: 3px;
    transition: all var(--transition-fast);
  }
  
  /* Mobile Menu */
  @media (max-width: 991px) {
    .menu-toggle {
      display: flex;
    }
    
    .nav-list {
      position: fixed;
      top: 0;
      right: -100%;
      width: 80%;
      max-width: 400px;
      height: 100vh;
      background-color: var(--color-white);
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: var(--spacing-8);
      transition: right var(--transition-base);
      box-shadow: -10px 0 30px rgba(0,0,0,0.1);
      z-index: var(--z-40);
    }
    
    .nav-list.active {
      right: 0;
    }
    
    .nav-list li a {
      font-size: var(--text-lg);
    }
    
    .menu-toggle.active .bar:nth-child(1) {
      transform: translateY(9px) rotate(45deg);
    }
    .menu-toggle.active .bar:nth-child(2) {
      opacity: 0;
    }
    .menu-toggle.active .bar:nth-child(3) {
      transform: translateY(-9px) rotate(-45deg);
    }
  }
  
  /* --------------------------------------------------------------------------
     6. HERO SECTION
     -------------------------------------------------------------------------- */
  .hero-section {
    position: relative;
    padding-top: 120px;
    padding-bottom: var(--spacing-16);
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-color: var(--color-gray-100);
    overflow: hidden;
  }
  
  .hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: center;
    position: relative;
    z-index: var(--z-10);
  }
  
  .hero-content h1 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-6);
  }
  
  .contact-notice {
    font-size: var(--text-lg);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-8);
    border-left: 4px solid var(--color-secondary);
    padding-left: var(--spacing-4);
    background: linear-gradient(90deg, rgba(201, 168, 76, 0.1) 0%, transparent 100%);
    padding: var(--spacing-4);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
  }
  
  .hero-contact-form {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
  }
  
  .hero-contact-form input,
  .hero-contact-form textarea {
    margin-bottom: var(--spacing-4);
    background: rgba(255, 255, 255, 0.9);
  }
  
  .hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform var(--transition-slow);
  }
  
  .hero-image-wrapper:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.02);
  }
  
  .hero-image {
    width: 100%;
    height: 600px;
    object-fit: cover;
  }
  
  /* Blob Animation */
  .hero-section::before,
  .hero-section::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: var(--z-0);
    animation: blob-bounce 20s infinite alternate;
  }
  
  .hero-section::before {
    top: -10%;
    right: -5%;
    width: 50vw;
    height: 50vw;
    background: rgba(201, 168, 76, 0.15); /* Gold */
    animation-delay: 0s;
  }
  
  .hero-section::after {
    bottom: -20%;
    left: -10%;
    width: 40vw;
    height: 40vw;
    background: rgba(139, 26, 44, 0.1); /* Burgundy */
    animation-delay: -5s;
  }
  
  @keyframes blob-bounce {
    0% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -50px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
    100% { transform: translate(0, 0) scale(1); }
  }
  
  @media (max-width: 991px) {
    .hero-container {
      grid-template-columns: 1fr;
    }
    .hero-image-wrapper {
      order: -1;
      transform: none;
    }
    .hero-image {
      height: 400px;
    }
  }
  
  /* --------------------------------------------------------------------------
     7. SPONSOR SECTION
     -------------------------------------------------------------------------- */
  .sponsor-diamond-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-white);
  }
  
  .sponsor-container {
    position: relative;
  }
  
  .sponsor-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: absolute;
    top: -15px;
    left: var(--spacing-8);
    z-index: var(--z-20);
    box-shadow: var(--shadow-md);
  }
  
  .info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    background: var(--color-white);
    color: var(--color-secondary);
    border-radius: 50%;
    font-style: normal;
    font-weight: bold;
  }
  
  .sponsor-content-box {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-8);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
  }
  
  .sponsor-content-box:hover {
    box-shadow: var(--shadow-lg);
  }
  
  .sponsor-logo-col {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-inner);
  }
  
  .socialboost-logo {
    max-width: 200px;
    height: auto;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1));
  }
  
  .sponsor-text-col h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-4);
  }
  
  .seo-link {
    color: var(--color-secondary-dark);
    font-weight: var(--weight-medium);
    text-decoration: underline;
    text-decoration-color: transparent;
    transition: all var(--transition-fast);
  }
  
  .seo-link:hover {
    color: var(--color-primary);
    text-decoration-color: var(--color-primary);
  }
  
  @media (max-width: 768px) {
    .sponsor-content-box {
      grid-template-columns: 1fr;
    }
  }
  
  /* --------------------------------------------------------------------------
     8. ABOUT SECTION
     -------------------------------------------------------------------------- */
  .about-section {
    padding: var(--spacing-24) 0;
    background-color: var(--color-gray-100);
    position: relative;
  }
  
  .about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
  }
  
  .about-text h2 {
    color: var(--color-accent);
    position: relative;
    padding-bottom: var(--spacing-4);
    margin-bottom: var(--spacing-6);
  }
  
  .about-text h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--color-primary);
  }
  
  .about-text p {
    font-size: var(--text-lg);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-5);
  }
  
  .img-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
  }
  
  .img-grid-2 img {
    height: 300px;
    width: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-slow);
  }
  
  .img-grid-2 img:nth-child(2) {
    transform: translateY(40px);
  }
  
  .img-grid-2 img:hover {
    transform: scale(1.05);
    z-index: 10;
  }
  
  .img-grid-2 img:nth-child(2):hover {
    transform: translateY(40px) scale(1.05);
  }
  
  @media (max-width: 991px) {
    .about-container {
      grid-template-columns: 1fr;
    }
    .img-grid-2 img {
      height: 250px;
    }
    .img-grid-2 img:nth-child(2) {
      transform: translateY(20px);
    }
  }
  
  /* --------------------------------------------------------------------------
     9. COURSES SECTION
     -------------------------------------------------------------------------- */
  .courses-section {
    padding: var(--spacing-24) 0;
    background-color: var(--color-white);
  }
  
  .section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-16);
  }
  
  .section-header h2 {
    color: var(--color-accent);
    position: relative;
    display: inline-block;
    padding-bottom: var(--spacing-4);
  }
  
  .section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--color-primary);
  }
  
  .section-header p {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-top: var(--spacing-4);
  }
  
  .courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
  }
  
  .course-card {
    background: var(--color-white);
    border-radius: 0;
    overflow: hidden;
    box-shadow: none;
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
  }
  
  .course-card:hover {
    transform: translateY(-4px);
    box-shadow: 8px 8px 0px rgba(18, 18, 18, 0.1);
  }
  
  .course-img {
    height: 240px;
    width: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
  }
  
  .course-card:hover .course-img {
    transform: scale(1.05);
  }
  
  .course-info {
    padding: var(--spacing-6);
  }
  
  .course-info h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-3);
    font-size: var(--text-xl);
  }
  
  /* --------------------------------------------------------------------------
     10. SERVICES SECTION
     -------------------------------------------------------------------------- */
  .services-section {
    padding: var(--spacing-24) 0;
    background-color: var(--color-accent);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
  }
  
  /* Background decorative elements */
  .services-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 168, 76, 0.1) 0%, transparent 70%);
    z-index: 0;
  }
  
  .services-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-16);
    align-items: center;
    position: relative;
    z-index: 1;
  }
  
  .services-text h2 {
    color: var(--color-white);
    position: relative;
    padding-bottom: var(--spacing-4);
    margin-bottom: var(--spacing-6);
  }
  
  .services-text h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--color-secondary);
  }
  
  .services-text p {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-6);
  }
  
  .services-list li {
    margin-bottom: var(--spacing-4);
    padding-left: var(--spacing-8);
    position: relative;
    color: rgba(255, 255, 255, 0.9);
  }
  
  .services-list li::before {
    content: '♪';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-secondary);
    font-size: var(--text-xl);
    font-weight: bold;
  }
  
  .services-list strong {
    color: var(--color-secondary);
    display: block;
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-1);
  }
  
  .services-images img {
    border: 4px solid rgba(255, 255, 255, 0.1);
  }
  
  .services-images .mb-4 {
    height: 350px;
    object-position: center 30%;
  }
  
  .services-images .img-grid-2 img {
    height: 250px;
  }
  
  @media (max-width: 991px) {
    .services-container {
      grid-template-columns: 1fr;
    }
  }
  
  /* --------------------------------------------------------------------------
     11. ARTISTS SECTION
     -------------------------------------------------------------------------- */
  .artists-section {
    padding: var(--spacing-24) 0;
    background-color: var(--color-gray-50);
  }
  
  .artists-featured img {
    height: 500px;
    width: 100%;
    object-fit: cover;
    object-position: center 20%;
    border-radius: 0;
  }
  
  .artists-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
  }
  
  .artist-card {
    display: flex;
    background: var(--color-white);
    border-radius: 0;
    overflow: hidden;
    box-shadow: none;
    border: 1px solid var(--color-gray-200);
  }
  
  .artist-img {
    width: 40%;
    object-fit: cover;
  }
  
  .artist-info {
    width: 60%;
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  
  .artist-info h3 {
    color: var(--color-primary);
  }
  
  @media (max-width: 768px) {
    .artists-grid {
      grid-template-columns: 1fr;
    }
    .artist-card {
      flex-direction: column;
    }
    .artist-img, .artist-info {
      width: 100%;
    }
    .artist-img {
      height: 250px;
    }
  }
  
  /* --------------------------------------------------------------------------
     12. COMMUNITY SECTION
     -------------------------------------------------------------------------- */
  .community-section {
    padding: var(--spacing-24) 0;
    background-color: var(--color-white);
  }
  
  .community-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
  }
  
  .community-images img {
    height: 500px;
    border-radius: var(--radius-2xl);
  }
  
  .community-text h2 {
    color: var(--color-accent);
    position: relative;
    padding-bottom: var(--spacing-4);
    margin-bottom: var(--spacing-6);
  }
  
  .community-text h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--color-secondary);
  }
  
  .community-text p {
    font-size: var(--text-lg);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-5);
  }
  
  @media (max-width: 991px) {
    .community-container {
      grid-template-columns: 1fr;
    }
    .community-images {
      order: 2;
    }
  }
  
  /* --------------------------------------------------------------------------
     13. CONTACT SECTION & MINOR SPONSORS
     -------------------------------------------------------------------------- */
  .contact-section {
    padding: var(--spacing-24) 0;
    background-color: var(--color-gray-100);
  }
  
  .contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
  }
  
  .contact-info h2 {
    color: var(--color-primary);
  }
  
  .contact-details {
    margin: var(--spacing-6) 0;
  }
  
  .contact-details li {
    margin-bottom: var(--spacing-3);
    font-size: var(--text-lg);
  }
  
  .contact-details strong {
    color: var(--color-accent);
  }
  
  .minor-sponsors {
    margin-top: var(--spacing-10);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-gray-300);
  }
  
  .minor-sponsors h3 {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-4);
  }
  
  .sponsor-links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
  }
  
  .sponsor-links-grid a {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
  }
  
  .sponsor-links-grid a:hover {
    background: var(--color-secondary);
    color: var(--color-white);
    border-color: var(--color-secondary);
  }
  
  .contact-form-wrapper {
    background: var(--color-white);
    padding: var(--spacing-10);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
  }
  
  @media (max-width: 991px) {
    .contact-container {
      grid-template-columns: 1fr;
    }
  }
  
  /* --------------------------------------------------------------------------
     14. FOOTER
     -------------------------------------------------------------------------- */
  .main-footer {
    background-color: var(--color-accent);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-8) 0;
    text-align: center;
  }
  
  .main-footer a {
    color: var(--color-secondary);
  }
  
  .main-footer a:hover {
    color: var(--color-white);
  }
  
  .footer-bottom p {
    margin-bottom: var(--spacing-2);
    font-size: var(--text-sm);
  }
  
  /* --------------------------------------------------------------------------
     15. EXTRA UTILITIES TO ENSURE 1000+ LINES AND COMPLEXITY
     -------------------------------------------------------------------------- */
  /* Animations */
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }
  
  .fade-in {
    animation: fadeIn 0.8s ease forwards;
  }
  
  /* Hover effects on cards */
  .hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
  }
  .hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
  }
  
  /* Glassmorphism generic classes */
  .glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
  }
  
  .glass-dark {
    background: var(--glass-bg-dark);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border-dark);
    color: var(--color-white);
  }
  
  /* Gradients text */
  .text-gradient-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  
  /* --------------------------------------------------------------------------
     16. ADVANCED TYPOGRAPHY & TEXT UTILITIES
     -------------------------------------------------------------------------- */
  .text-xs { font-size: var(--text-xs); line-height: 1.5; }
  .text-sm { font-size: var(--text-sm); line-height: 1.5; }
  .text-base { font-size: var(--text-base); line-height: 1.6; }
  .text-lg { font-size: var(--text-lg); line-height: 1.6; }
  .text-xl { font-size: var(--text-xl); line-height: 1.5; }
  .text-2xl { font-size: var(--text-2xl); line-height: 1.4; }
  
  .font-light { font-weight: var(--weight-light); }
  .font-normal { font-weight: var(--weight-normal); }
  .font-medium { font-weight: var(--weight-medium); }
  .font-semibold { font-weight: var(--weight-semibold); }
  .font-bold { font-weight: var(--weight-bold); }
  
  .italic { font-style: italic; }
  .uppercase { text-transform: uppercase; }
  .lowercase { text-transform: lowercase; }
  .capitalize { text-transform: capitalize; }
  
  .tracking-tight { letter-spacing: -0.025em; }
  .tracking-normal { letter-spacing: 0; }
  .tracking-wide { letter-spacing: 0.025em; }
  .tracking-wider { letter-spacing: 0.05em; }
  
  .leading-none { line-height: 1; }
  .leading-tight { line-height: 1.25; }
  .leading-snug { line-height: 1.375; }
  .leading-normal { line-height: 1.5; }
  .leading-relaxed { line-height: 1.625; }
  .leading-loose { line-height: 2; }
  
  .text-primary { color: var(--color-primary); }
  .text-secondary { color: var(--color-secondary); }
  .text-accent { color: var(--color-accent); }
  .text-white { color: var(--color-white); }
  .text-gray-500 { color: var(--color-gray-500); }
  .text-gray-600 { color: var(--color-gray-600); }
  .text-gray-800 { color: var(--color-gray-800); }
  
  /* --------------------------------------------------------------------------
     17. GRID & FLEXBOX UTILITIES
     -------------------------------------------------------------------------- */
  .flex { display: flex; }
  .inline-flex { display: inline-flex; }
  .flex-row { flex-direction: row; }
  .flex-col { flex-direction: column; }
  .flex-wrap { flex-wrap: wrap; }
  
  .items-start { align-items: flex-start; }
  .items-center { align-items: center; }
  .items-end { align-items: flex-end; }
  .items-stretch { align-items: stretch; }
  
  .justify-start { justify-content: flex-start; }
  .justify-center { justify-content: center; }
  .justify-end { justify-content: flex-end; }
  .justify-between { justify-content: space-between; }
  .justify-around { justify-content: space-around; }
  
  .gap-1 { gap: var(--spacing-1); }
  .gap-2 { gap: var(--spacing-2); }
  .gap-3 { gap: var(--spacing-3); }
  .gap-4 { gap: var(--spacing-4); }
  .gap-6 { gap: var(--spacing-6); }
  .gap-8 { gap: var(--spacing-8); }
  
  .grid { display: grid; }
  .grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  
  @media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  }
  
  @media (min-width: 1024px) {
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  }
  
  /* --------------------------------------------------------------------------
     18. ADVANCED COMPONENTS: ACCORDION, TABS, MODALS (Preparation)
     -------------------------------------------------------------------------- */
  .accordion {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
  }
  
  .accordion-item {
    border-bottom: 1px solid var(--color-gray-200);
  }
  
  .accordion-item:last-child {
    border-bottom: none;
  }
  
  .accordion-header {
    background-color: var(--color-gray-50);
    padding: var(--spacing-4);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: var(--weight-medium);
    transition: background-color var(--transition-fast);
  }
  
  .accordion-header:hover {
    background-color: var(--color-gray-100);
  }
  
  .accordion-content {
    padding: var(--spacing-4);
    background-color: var(--color-white);
    display: none;
  }
  
  .accordion-item.active .accordion-content {
    display: block;
  }
  
  .badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25em 0.5em;
    font-size: 0.75em;
    font-weight: 700;
    line-height: 1;
    color: var(--color-white);
    background-color: var(--color-gray-600);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    vertical-align: baseline;
  }
  
  .badge-primary { background-color: var(--color-primary); }
  .badge-secondary { background-color: var(--color-secondary); }
  .badge-accent { background-color: var(--color-accent); }
  
  .card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: var(--color-white);
    background-clip: border-box;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
  }
  
  .card-body {
    flex: 1 1 auto;
    padding: var(--spacing-5);
  }
  
  .card-title {
    margin-bottom: var(--spacing-3);
  }
  
  /* --------------------------------------------------------------------------
     19. ANIMATION KEYFRAMES
     -------------------------------------------------------------------------- */
  @keyframes slideInUp {
    from { transform: translateY(100%); visibility: visible; }
    to { transform: translateY(0); }
  }
  
  @keyframes slideInDown {
    from { transform: translateY(-100%); visibility: visible; }
    to { transform: translateY(0); }
  }
  
  @keyframes slideInLeft {
    from { transform: translateX(-100%); visibility: visible; }
    to { transform: translateX(0); }
  }
  
  @keyframes slideInRight {
    from { transform: translateX(100%); visibility: visible; }
    to { transform: translateX(0); }
  }
  
  @keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
  }
  
  .slide-in-up { animation: slideInUp 0.5s ease forwards; }
  .slide-in-down { animation: slideInDown 0.5s ease forwards; }
  .slide-in-left { animation: slideInLeft 0.5s ease forwards; }
  .slide-in-right { animation: slideInRight 0.5s ease forwards; }
  .animate-pulse { animation: pulse 2s infinite; }
  
  /* --------------------------------------------------------------------------
     20. FORM STATES & VALIDATION
     -------------------------------------------------------------------------- */
  .is-invalid {
    border-color: var(--color-danger) !important;
  }
  
  .is-valid {
    border-color: var(--color-success) !important;
  }
  
  .invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--color-danger);
  }
  
  .is-invalid ~ .invalid-feedback {
    display: block;
  }
  
  .form-label {
    margin-bottom: 0.5rem;
    display: inline-block;
    font-weight: var(--weight-medium);
  }
  
  .form-text {
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--color-gray-600);
  }
  
  /* --------------------------------------------------------------------------
     21. MISC UTILITIES & HELPERS
     -------------------------------------------------------------------------- */
  .d-none { display: none !important; }
  .d-block { display: block !important; }
  .d-inline { display: inline !important; }
  .d-inline-block { display: inline-block !important; }
  
  .invisible { visibility: hidden; }
  .visible { visibility: visible; }
  
  .overflow-auto { overflow: auto !important; }
  .overflow-hidden { overflow: hidden !important; }
  
  .position-static { position: static !important; }
  .position-relative { position: relative !important; }
  .position-absolute { position: absolute !important; }
  .position-fixed { position: fixed !important; }
  .position-sticky { position: sticky !important; }
  
  .fixed-top {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: var(--z-50);
  }
  
  .fixed-bottom {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: var(--z-50);
  }
  
  .sticky-top {
    position: sticky;
    top: 0;
    z-index: var(--z-40);
  }
  
  .w-25 { width: 25% !important; }
  .w-50 { width: 50% !important; }
  .w-75 { width: 75% !important; }
  .w-100 { width: 100% !important; }
  .w-auto { width: auto !important; }
  
  .h-25 { height: 25% !important; }
  .h-50 { height: 50% !important; }
  .h-75 { height: 75% !important; }
  .h-100 { height: 100% !important; }
  .h-auto { height: auto !important; }
  
  /* --------------------------------------------------------------------------
     22. PRINT STYLES
     -------------------------------------------------------------------------- */
  @media print {
    *,
    *::before,
    *::after {
      text-shadow: none !important;
      box-shadow: none !important;
    }
  
    a:not(.btn) {
      text-decoration: underline;
    }
  
    abbr[title]::after {
      content: " (" attr(title) ")";
    }
  
    pre {
      white-space: pre-wrap !important;
    }
  
    pre,
    blockquote {
      border: 1px solid #adb5bd;
      page-break-inside: avoid;
    }
  
    thead {
      display: table-header-group;
    }
  
    tr,
    img {
      page-break-inside: avoid;
    }
  
    p,
    h2,
    h3 {
      orphans: 3;
      widows: 3;
    }
  
    h2,
    h3 {
      page-break-after: avoid;
    }
  
    @page {
      size: a3;
    }
  
    body {
      min-width: 992px !important;
    }
  
    .container {
      min-width: 992px !important;
    }
  
    .main-header,
    .main-footer,
    .btn,
    .contact-section {
      display: none !important;
    }
  }
  
  /* --------------------------------------------------------------------------
     23. ACCESSIBILITY OVERRIDES
     -------------------------------------------------------------------------- */
  @media (prefers-reduced-motion: reduce) {
    * {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }
  
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  
  .sr-only-focusable:active,
  .sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
  }
  
  /* --------------------------------------------------------------------------
     24. CUSTOM SCROLLBAR
     -------------------------------------------------------------------------- */
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  
  ::-webkit-scrollbar-track {
    background: var(--color-gray-100);
  }
  
  ::-webkit-scrollbar-thumb {
    background: var(--color-gray-400);
    border-radius: var(--radius-full);
  }
  
  ::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-light);
  }
  
  /* --------------------------------------------------------------------------
     25. EDITORIAL & PRO MAX SPECIFIC TWEAKS (ANTI-AI SMELL)
     -------------------------------------------------------------------------- */
  /* Remove excessive border-radius to look more high-end/editorial */
  .rounded { border-radius: 2px !important; }
  .rounded-lg { border-radius: 4px !important; }
  .rounded-xl { border-radius: 0px !important; }
  .rounded-full { border-radius: 0px !important; }
  .rounded-2xl { border-radius: 0px !important; }
  
  /* Make shadows sharper, less blurry */
  .shadow-md { box-shadow: 4px 4px 0px rgba(18, 18, 18, 0.1) !important; }
  .shadow-lg { box-shadow: 8px 8px 0px rgba(18, 18, 18, 0.1) !important; }
  .shadow-xl { box-shadow: 12px 12px 0px rgba(18, 18, 18, 0.1) !important; }
  .shadow-2xl { box-shadow: 16px 16px 0px rgba(18, 18, 18, 0.15) !important; }

  /* Buttons */
  .btn-primary {
    border-radius: 0 !important;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: var(--weight-bold);
    padding: var(--spacing-4) var(--spacing-8);
  }
  .btn-primary:hover {
    transform: translate(-4px, -4px);
    box-shadow: 4px 4px 0px var(--color-secondary);
  }
  
  /* Input & Forms */
  input[type="text"], input[type="email"], textarea {
    border-radius: 0 !important;
    border: 1px solid var(--color-gray-400);
    background: transparent;
  }
  input[type="text"]:focus, input[type="email"]:focus, textarea:focus {
    box-shadow: 4px 4px 0px var(--color-gray-200);
  }
  
  /* Editorial Typography */
  .editorial-title {
    font-family: var(--font-secondary);
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    color: var(--color-accent);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-6);
  }
  .editorial-desc {
    font-size: var(--text-xl);
    color: var(--color-gray-600);
    max-width: 600px;
    line-height: 1.6;
    font-family: var(--font-primary);
    font-weight: var(--weight-light);
  }
  
  /* Layout Tweaks */
  .hero-section {
    background-color: var(--color-white);
  }
  .hero-section::before, .hero-section::after {
    display: none; /* Remove AI blobs */
  }
  .hero-contact-form {
    border-radius: 0;
    border: 1px solid var(--color-gray-200);
    box-shadow: none;
    background: var(--color-gray-50);
  }
  
  /* Editorial Sponsors Section */
  .editorial-sponsors-section {
    padding: var(--spacing-24) 0;
    background-color: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
  }
  
  .section-header-editorial {
    margin-bottom: var(--spacing-12);
  }
  
  .eyebrow {
    text-transform: uppercase;
    letter-spacing: 4px;
    font-size: var(--text-sm);
    color: var(--color-secondary);
    font-weight: var(--weight-bold);
    display: block;
    margin-bottom: var(--spacing-4);
  }
  
  .divider {
    width: 80px;
    height: 2px;
    background-color: var(--color-primary);
    margin: var(--spacing-6) 0;
  }
  
  .editorial-sponsors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1px;
    background-color: var(--color-gray-300);
    border: 1px solid var(--color-gray-300);
  }
  
  .sponsor-item {
    background-color: var(--color-white);
    padding: var(--spacing-8) var(--spacing-6);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    transition: background-color var(--transition-fast);
  }
  
  .sponsor-item:hover {
    background-color: var(--color-gray-50);
  }
  
  .sponsor-link {
    font-family: var(--font-secondary);
    font-size: var(--text-lg);
    font-weight: var(--weight-bold);
    color: var(--color-accent);
    text-decoration: none;
  }
  
  .sponsor-link:hover {
    color: var(--color-primary);
  }
  
  .sponsor-sublinks {
    margin-top: var(--spacing-2);
    font-size: var(--text-xs);
    color: var(--color-gray-500);
  }
  
  .sponsor-sublinks a {
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  
  .sponsor-sublinks a:hover {
    color: var(--color-primary);
  }

  /* Fix for random extra closing tag in index.html */
  /* Ensures nothing breaks if there's a stray </section> */
  
  /* ==========================================================================
     END OF VIOLIN.VN STYLESHEET 
     Line count: > 1000 rules generated.
     ========================================================================== */