:root {
    /* Light theme variables */
    --bg-color-light: #f8f9fa;
    --text-color-light: #2c3e50;
    --card-bg-light: #ffffff;
    --primary-light: #4361ee;
    --secondary-light: #3a0ca3;
    --accent-light: #7209b7;
    --border-light: #e9ecef;
    --shadow-light: rgba(149, 157, 165, 0.1);
    --vip-gold: #d4af37;
    

/* Dark theme variables (Black + Shining Golden) */
--bg-color-dark: #000000;              /* Pure black background */
--text-color-dark: #d4af37;            /* Golden text */
--card-bg-dark: #111111;               /* Deep black card */
--primary-dark: #ffd700;               /* Bright golden primary */
--secondary-dark: #daa520;             /* Goldenrod secondary */
--accent-dark: #fff8dc;                /* Light golden accent */
--border-dark: #d4af37;                /* Golden border */
--shadow-dark: rgba(212, 175, 55, 0.4);/* Golden glow shadow */

    /* Common variables */
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    --box-shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.15);
    --vip-gradient: linear-gradient(135deg, #d4af37, #f7ef8a);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.2s ease, border-color 0.3s ease;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color-light);
    color: var(--text-color-light);
    line-height: 1.6;
    transition: var(--transition);
}

body.dark-mode {
    background-color: var(--bg-color-dark);
    color: var(--text-color-dark);
}

/* Header & Navigation */
header {
    padding: 1.5rem 5%;
    background-color: var(--card-bg-light);
    box-shadow: 0 4px 12px var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dark-mode header {
    background-color: var(--card-bg-Golden);
    box-shadow: 0 4px 12px var(--shadow-dark);
}

.logo {
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    font-size: 1.8rem;
    background: var(--vip-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color-light);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.dark-mode .nav-links a {
    color: var(--text-color-dark);
}

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

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

.nav-links a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: var(--vip-gradient);
    transition: width 0.3s;
}

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

.vip-badge {
    background: var(--vip-gradient);
    color: #000;
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mode-toggle {
    display: flex;
    align-items: center;
    background: var(--border-light);
    border-radius: 50px;
    padding: 0.3rem;
    cursor: pointer;
    position: relative;
    width: 60px;
    height: 30px;
}

.dark-mode .mode-toggle {
    background: var(--border-dark);
}

.toggle-slider {
    position: absolute;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-light);
    left: 3px;
    transition: transform 0.3s;
}

.dark-mode .toggle-slider {
    background: var(--primary-dark);
    transform: translateX(30px);
}

.toggle-icon {
    position: absolute;
    font-size: 0.9rem;
}

.sun-icon {
    left: 8px;
    color: #ffaa00;
}

.moon-icon {
    right: 8px;
    color: #a78bfa;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color-light);
    cursor: pointer;
}

.dark-mode .mobile-menu-btn {
    color: var(--text-color-dark);
}

/* Hero Section */
.hero {
    padding: 4rem 5% 6rem;
    text-align: center;
    background: linear-gradient(135deg, #4361ee15 0%, #3a0ca310 100%);
    position: relative;
    overflow: hidden;
}

.dark-mode .hero {
    background: linear-gradient(135deg, #6366f110 0%, #8b5cf610 100%);
}

.vip-system-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--vip-gradient);
    color: #000;
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.hero h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, var(--primary-light), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dark-mode .hero h1 {
    background: linear-gradient(to right, var(--primary-dark), var(--accent-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

/* Search Section */
.searchForm {
    max-width: 700px;
    margin: 0 auto;
}

.search-card {
    background-color: var(--card-bg-light);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--box-shadow-heavy);
    border: 1px solid var(--border-light);
}

.dark-mode .search-card {
    background-color: var(--card-bg-dark);
    border-color: var(--border-dark);
    box-shadow: 0 15px 35px var(--shadow-dark);
}

.search-card h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
}

.search-input-group {
    margin-bottom: 1.5rem;
}

.search-input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 1rem;
    text-align: left;
}

.search-input {
    width: 100%;
    padding: 1.2rem 1.5rem;
    border-radius: 10px;
    border: 2px solid var(--border-light);
    background-color: var(--bg-color-light);
    font-size: 1rem;
    color: var(--text-color-light);
    transition: var(--transition);
}

.dark-mode .search-input {
    background-color: var(--bg-color-dark);
    border-color: var(--border-dark);
    color: var(--text-color-dark);
}

.dark-mode .search-input:focus {
    border-color: var(--primary-dark);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.search-btn {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(to right, var(--primary-light), var(--secondary-light));
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.8rem;
    transition: var(--transition);
}

.dark-mode .search-btn {
    background: linear-gradient(to right, var(--primary-dark), var(--secondary-dark));
}

.search-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(67, 97, 238, 0.3);
}

.dark-mode .search-btn:hover {
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

.helper-text {
    margin-top: 1rem;
    font-size: 0.9rem;
    opacity: 0.8;
    text-align: center;
}

/* Main Content Sections */
.container {
    padding: 5rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
    color: inherit; /* golden in dark mode */
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto 3rem;
    color: inherit;
}

.section-intro {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    color: inherit;
}

.card {
    background-color: var(--card-bg-light);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--border-light);
    height: 100%;
}

.dark-mode .card {
    background-color: var(--card-bg-dark);
    border-color: var(--border-dark);
    color: var(--text-color-dark);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    color: white;
}

.dark-mode .card-icon {
    background: linear-gradient(135deg, var(--primary-dark), var(--accent-dark));
}

/* Feature Grids */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.three-col-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.two-col-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

/* Steps Section */
.steps-container {
    counter-reset: step-counter;
}

.step {
    display: flex;
    margin-bottom: 2.5rem;
    position: relative;
    padding-left: 80px;
}

.step:before {
    counter-increment: step-counter;
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
}

.dark-mode .step:before {
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary-dark));
}

.step-content h4 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: inherit;
}

/* Security Highlight */
.security-highlight {
    background: linear-gradient(135deg, #4361ee20 0%, #3a0ca320 100%);
    border-radius: var(--border-radius);
    padding: 3rem;
    margin-bottom: 4rem;
    border-left: 5px solid var(--vip-gold);
    color: inherit;
}

.dark-mode .security-highlight {
    background: linear-gradient(135deg, #6366f120 0%, #8b5cf620 100%);
}

/* Conclusion Section */
/* Conclusion Section */
.conclusion {
    text-align: center;
    padding: 4rem;
    border-radius: var(--border-radius);
    background: linear-gradient(
        135deg, 
        rgba(67, 97, 238, 0.1),   /* var(--primary-light) with 50% opacity */
        rgba(58, 12, 163, 0.1)    /* var(--secondary-light) with 50% opacity */
    );
    color: white;
    margin-bottom: 3rem;
}

.dark-mode .conclusion {
    background: linear-gradient(
        135deg, 
        rgba(99, 102, 241, 0.1),  /* var(--primary-dark) with 50% opacity */
        rgba(139, 92, 246, 0.1)   /* var(--secondary-dark) with 50% opacity */
    );
    color: var(--text-color-dark);
}

}

.conclusion h2 {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: inherit;
}

.conclusion-btn {
    display: inline-block;
    background: white;
    color: var(--primary-light);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    margin-top: 2rem;
    transition: var(--transition);
}

.conclusion-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* Footer */
footer {
    background-color: var(--card-bg-light);
    padding: 3rem 5%;
    text-align: center;
    border-top: 1px solid var(--border-light);
}

.dark-mode footer {
    background-color: var(--card-bg-dark);
    border-top-color: var(--border-dark);
    color: var(--text-color-dark);
}

.footer-logo {
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    font-size: 2rem;
    background: var(--vip-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.copyright {
    margin-top: 2rem;
    opacity: 0.8;
    font-size: 0.9rem;
    color: inherit;
}

/* Mobile Responsive */
@media (max-width: 1100px) {
    .three-col-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .three-col-grid, .two-col-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .step {
        padding-left: 70px;
    }
    
    .step:before {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .search-card {
        padding: 1.8rem;
    }
}

@media (max-width: 480px) {
    .container, .hero {
        padding-left: 5%;
        padding-right: 5%;
    }
    
    .hero {
        padding-top: 2rem;
        padding-bottom: 4rem;
    }
    
    .hero h1 {
        font-size: 1.9rem;
    }
    
        .card {
        padding: 1.5rem;
    }
    
    .security-highlight {
        padding: 1.5rem;
    }
    
    .conclusion {
        padding: 2rem;
    }
    
    .conclusion h2 {
        font-size: 1.8rem;
    }
}

/* Animation for fade-in */
@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}
.shining-gold {
  color: var(--vip-gold);
  background: linear-gradient(90deg, #d4af37, #fff8dc, #ffd700, #d4af37);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shine 3s linear infinite;
}

@keyframes shine {
  to {
    background-position: 200% center;
  }
}