/* ===== CSS VARIABLES ===== */
:root {
    /* Premium Color Palette */
    --primary: #6366f1;
    --primary-foreground: #ffffff;
    --secondary: #f8fafc;
    --secondary-foreground: #1e293b;
    --muted: #f1f5f9;
    --muted-foreground: #64748b;
    --accent: #f1f5f9;
    --accent-foreground: #1e293b;
    --destructive: #ef4444;
    --destructive-foreground: #fef2f2;
    --border: #e2e8f0;
    --input: #ffffff;
    --ring: #6366f1;
    --background: #ffffff;
    --foreground: #0f172a;
    --card: #ffffff;
    --card-foreground: #0f172a;
    --popover: #ffffff;
    --popover-foreground: #0f172a;
    
    /* Premium Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-dark: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    --gradient-gold: linear-gradient(135deg, #ffd89b 0%, #19547b 100%);
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    
    /* Typography */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-display: 'Anton', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Premium Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --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);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    --shadow-glow-lg: 0 0 40px rgba(99, 102, 241, 0.4);
}

/* ===== RESET & BASE STYLES ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--foreground);
    background: var(--gradient-purple);
    background-attachment: fixed;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Premium Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(240, 147, 251, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(79, 172, 254, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 60% 60%, rgba(255, 216, 155, 0.2) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { 
        transform: scale(1) rotate(0deg);
        opacity: 0.8;
    }
    25% { 
        transform: scale(1.1) rotate(1deg);
        opacity: 1;
    }
    50% { 
        transform: scale(1.05) rotate(-1deg);
        opacity: 0.9;
    }
    75% { 
        transform: scale(1.15) rotate(0.5deg);
        opacity: 1;
    }
}

/* Floating Background Elements */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        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%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
    z-index: -1;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Premium Main Container with Advanced Glass Effect */
.min-h-screen {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(25px) saturate(180%);
    -webkit-backdrop-filter: blur(25px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 
        0 8px 32px 0 rgba(31, 38, 135, 0.37),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    position: relative;
    overflow: hidden;
}

.min-h-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
    z-index: 1;
}

.min-h-screen::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(240, 147, 251, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}



/* ===== UTILITY CLASSES ===== */

/* Background Colors */
.bg-background { background-color: var(--background); }
.bg-foreground { background-color: var(--foreground); }
.bg-primary { background-color: var(--primary); }
.bg-primary\/90 { background-color: rgb(0 0 0 / 0.9); }
.bg-secondary { background-color: var(--secondary); }
.bg-muted { background-color: var(--muted); }
.bg-accent { background-color: var(--accent); }
.bg-card { 
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px) saturate(150%);
    -webkit-backdrop-filter: blur(15px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 
        0 8px 32px 0 rgba(31, 38, 135, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.bg-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
    z-index: 1;
    pointer-events: none;
}

.bg-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 
        0 25px 50px 0 rgba(31, 38, 135, 0.4),
        0 0 30px rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.bg-card:hover::before {
    left: 100%;
}

/* Text Colors */
.text-foreground { color: var(--foreground); }
.text-background { color: var(--background); }
.text-primary { color: var(--primary); }
.text-primary-foreground { color: var(--primary-foreground); }
.text-secondary { color: var(--secondary-foreground); }
.text-muted-foreground { color: var(--muted-foreground); }
.text-accent-foreground { color: var(--accent-foreground); }

/* Typography */
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.font-normal { font-weight: 400; }
.font-light { font-weight: 300; }

.font-anton { font-family: var(--font-family-display); }

.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-6xl { font-size: 3.75rem; line-height: 1; }
.text-7xl { font-size: 4.5rem; line-height: 1; }
.text-8xl { font-size: 6rem; line-height: 1; }

.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; }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

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

/* Layout */
.min-h-screen { min-height: 100vh; }
.h-6 { height: 1.5rem; }
.w-6 { width: 1.5rem; }
.w-64 { width: 16rem; }
.h-64 { height: 16rem; }

.max-w-2xl { max-width: 42rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-6xl { max-width: 72rem; }

/* Flexbox */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

/* Grid */
.grid { display: grid; }
.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)); }

/* Gaps */
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-x-11 { column-gap: 2.75rem; }

/* Spacing */
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }

.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }

.m-1 { margin: 0.25rem; }
.m-2 { margin: 0.5rem; }
.m-4 { margin: 1rem; }
.m-6 { margin: 1.5rem; }
.m-8 { margin: 2rem; }

.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-16 { margin-bottom: 4rem; }

/* Border Radius */
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-full { border-radius: 9999px; }

/* Object Fit */
.object-cover { object-fit: cover; }
.object-contain { object-fit: contain; }

/* Hover Effects */
.hover\:underline:hover { text-decoration: underline; }
.hover\:bg-primary\/90:hover { background-color: rgb(0 0 0 / 0.9); }
.hover\:text-primary:hover { color: var(--primary); }

/* Transitions */
.transition-colors { transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out; }
.transition-all { transition: all 0.15s ease-in-out; }

/* Space Between */
.space-y-3 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.75rem; }
.space-y-4 > :not([hidden]) ~ :not([hidden]) { margin-top: 1rem; }

/* Animations */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.animate-spin { animation: spin 1s linear infinite; }

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-up-and-fade {
    animation: slideUp 0.6s ease-out forwards;
}

/* Responsive Design */
.hidden { display: none; }

@media (min-width: 640px) {
    .sm\:grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
    .sm\:col-span-4 { grid-column: span 4 / span 4; }
    .sm\:col-span-8 { grid-column: span 8 / span 8; }
}

@media (min-width: 768px) {
    .md\:flex { display: flex; }
    .md\:hidden { display: none; }
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .md\:p-8 { padding: 2rem; }
    .md\:text-8xl { font-size: 6rem; line-height: 1; }
}

@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)); }
}

/* Custom Components */
button, .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.375rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease-in-out;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

/* Premium Gradient Button Effect */
.bg-primary {
    background: var(--gradient-primary);
    position: relative;
    z-index: 1;
    border: none;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.bg-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    transition: left 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.bg-primary::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
    z-index: 1;
}

.bg-primary:hover::before {
    left: 0;
}

.bg-primary:hover::after {
    transform: translateX(100%);
}

.bg-primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 
        0 15px 35px rgba(99, 102, 241, 0.4),
        0 0 20px rgba(99, 102, 241, 0.3);
}

.bg-primary:active {
    transform: translateY(-1px) scale(1.02);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Links */
a {
    color: inherit;
    text-decoration: none;
    transition: color 0.15s ease-in-out;
}

/* Remove list styles */
ul, ol {
    list-style: none;
}

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

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
}

/* Chatbot Styles */
#chatbot {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
    font-family: var(--font-family-sans);
}

/* Chatbot Button */
.chatbot-button {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.chatbot-button:hover {
    transform: scale(1.15);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.4);
}

.chatbot-button:active {
    transform: scale(0.95);
}

/* Pulse Animation */
@keyframes pulse-glow {
    0%, 100% {
        transform: scale(1);
        opacity: 0.2;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.1;
    }
}

.chatbot-button .animate-ping {
    animation: pulse-glow 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Chatbot Window */
#chatbot-window {
    position: absolute;
    bottom: 90px;
    right: 0;
    width: 384px;
    height: 500px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(102, 126, 234, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#chatbot-window.show {
    transform: scale(1) translateY(0);
    opacity: 1;
}

#chatbot-window.hidden {
    transform: scale(0.95) translateY(10px);
    opacity: 0;
    pointer-events: none;
}

/* Chatbot Header */
#chatbot-window .flex.items-center.justify-between {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-bottom: 1px solid rgba(102, 126, 234, 0.2);
    padding: 1rem;
}

/* Messages Area */
#chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0.3) 100%);
    scrollbar-width: thin;
    scrollbar-color: rgba(102, 126, 234, 0.3) transparent;
}

#chat-messages::-webkit-scrollbar {
    width: 6px;
}

#chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

#chat-messages::-webkit-scrollbar-thumb {
    background: rgba(102, 126, 234, 0.3);
    border-radius: 3px;
}

#chat-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(102, 126, 234, 0.5);
}

/* Message Styles */
.chat-message {
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    animation: messageSlideIn 0.3s ease-out;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-message.user {
    flex-direction: row-reverse;
}

.chat-message .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.chat-message .message {
    background: rgba(255, 255, 255, 0.9);
    padding: 1rem;
    border-radius: 16px;
    max-width: 80%;
    word-wrap: break-word;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.chat-message.user .message {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* Quick Questions */
.quick-question {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    border: 1px solid rgba(102, 126, 234, 0.2);
    cursor: pointer;
    transition: all 0.2s ease;
    margin: 0.25rem;
}

.quick-question:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.2);
}

/* Input Area */
#chatbot-window .p-4.border-t {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0.3) 100%);
    border-top: 1px solid rgba(102, 126, 234, 0.2);
    padding: 1rem;
}

#chat-input {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.8);
    color: #333;
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

#chat-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: rgba(255, 255, 255, 0.95);
}

#chat-send {
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

#chat-send:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

#chat-send:active {
    transform: scale(0.95);
}

/* Tooltip */
.chatbot-button .absolute.bottom-full {
    pointer-events: none;
    z-index: 1001;
}

/* Responsive */
@media (max-width: 768px) {
    #chatbot-window {
        width: calc(100vw - 2rem);
        right: -1rem;
        bottom: 80px;
    }
    
    .chatbot-button {
        width: 60px;
        height: 60px;
    }
}

/* Certificate Styles */
.certificate-badge {
    transition: all 0.3s ease;
}

.certificate-badge:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Premium Enhanced Typography */
.font-anton {
    background: var(--gradient-purple);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    animation: gradient-shift 4s ease-in-out infinite;
    position: relative;
}

.font-anton::before {
    content: attr(data-text);
    position: absolute;
    left: 0;
    top: 0;
    background: var(--gradient-gold);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift-reverse 4s ease-in-out infinite;
    opacity: 0.7;
    z-index: -1;
}

@keyframes gradient-shift {
    0%, 100% { 
        background-position: 0% 50%;
        filter: hue-rotate(0deg);
    }
    50% { 
        background-position: 100% 50%;
        filter: hue-rotate(30deg);
    }
}

@keyframes gradient-shift-reverse {
    0%, 100% { 
        background-position: 100% 50%;
        filter: hue-rotate(180deg);
    }
    50% { 
        background-position: 0% 50%;
        filter: hue-rotate(210deg);
    }
}

/* Premium High-End Navigation Effects */
.nav-link {
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--gradient-primary);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

.nav-link::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.nav-link:hover::before {
    width: 100%;
}

.nav-link:hover::after {
    left: 100%;
}

.nav-link:hover {
    transform: translateY(-2px);
    text-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.nav-link.active {
    color: var(--primary);
    transform: scale(1.05) translateY(-1px);
    font-weight: 600;
}

.nav-link.active::before {
    width: 100%;
    background: var(--gradient-secondary);
    box-shadow: 0 0 15px rgba(240, 147, 251, 0.6);
}

/* Premium Scroll Progress Indicator */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: var(--gradient-primary);
    z-index: 1000;
    transition: width 0.1s ease;
    box-shadow: 
        0 0 20px rgba(99, 102, 241, 0.6),
        0 0 40px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.scroll-progress::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    animation: progressShimmer 2s ease-in-out infinite;
}

.scroll-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: progressGlow 1.5s ease-in-out infinite;
}

@keyframes progressShimmer {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

@keyframes progressGlow {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Floating Animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.floating-card {
    animation: float 6s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.floating-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.floating-card:hover::before {
    left: 100%;
}

/* Particle Effects */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: particle-float 20s infinite linear;
}

@keyframes particle-float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* Glow Effects */
.glow-effect {
    position: relative;
}

.glow-effect::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #667eea, #764ba2, #667eea);
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.glow-effect:hover::after {
    opacity: 0.7;
}

/* Section Header Animations */
.section-header {
    position: relative;
    display: inline-block;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.6s ease;
}

.section-header.animate::after {
    width: 100%;
}

/* Enhanced Section Headers */
.section-header {
    position: relative;
    display: inline-block;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
    transition: width 0.6s ease;
}

.section-header.animate::after {
    width: 100%;
}

/* Premium Custom Cursor Effect */
.custom-cursor {
    position: fixed;
    width: 24px;
    height: 24px;
    background: var(--gradient-primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    mix-blend-mode: difference;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.6);
    animation: cursorPulse 2s ease-in-out infinite;
}

.custom-cursor::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    transition: all 0.3s ease;
}

.custom-cursor.hover {
    transform: scale(2.5);
    background: var(--gradient-secondary);
    box-shadow: 0 0 30px rgba(240, 147, 251, 0.8);
}

.custom-cursor.hover::before {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.3;
}

@keyframes cursorPulse {
    0%, 100% { 
        transform: scale(1);
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.6);
    }
    50% { 
        transform: scale(1.1);
        box-shadow: 0 0 30px rgba(99, 102, 241, 0.8);
    }
}

/* Mobile menu button animation */
header button.active svg {
    transition: transform 0.3s ease;
}

/* Enhanced button hover effects */
button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

/* Card hover effects */
.bg-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 20px 40px rgba(31, 38, 135, 0.3);
}

/* Premium Project Card Styles */
.project-card {
    position: relative;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
    z-index: 1;
    pointer-events: none;
}

.project-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(240, 147, 251, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
    pointer-events: none;
}

.project-card:hover {
    transform: translateY(-12px) scale(1.04);
    box-shadow: 
        0 30px 60px rgba(31, 38, 135, 0.5),
        0 0 40px rgba(99, 102, 241, 0.3);
}

.project-card:hover::before {
    left: 100%;
}

.project-card:hover::after {
    opacity: 1;
}

/* Premium overlay effect */
.project-card .aspect-video::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(240, 147, 251, 0.2));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.project-card:hover .aspect-video::before {
    opacity: 1;
}

/* Ensure links don't interfere with card click */
.project-card a {
    position: relative;
    z-index: 3;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --primary: #ffffff;
        --primary-foreground: #000000;
        --secondary: #1e293b;
        --secondary-foreground: #f1f5f9;
        --muted: #1e293b;
        --muted-foreground: #94a3b8;
        --accent: #1e293b;
        --accent-foreground: #f1f5f9;
        --destructive: #7f1d1d;
        --destructive-foreground: #fef2f2;
        --border: #1e293b;
        --input: #1e293b;
        --background: #0f172a;
        --foreground: #f1f5f9;
        --card: #1e293b;
        --card-foreground: #f1f5f9;
        --popover: #1e293b;
        --popover-foreground: #f1f5f9;
    }
    
    body {
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    }
    
    .min-h-screen {
        background: rgba(26, 26, 46, 0.95);
    }
    
    .bg-card {
        background: rgba(26, 26, 46, 0.9);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
}