/* Custom Styles for Portfolio */
:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
}

.dark {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --bg-light: #1f2937;
    --bg-white: #111827;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    transition: background-color 0.3s ease;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Navigation */
nav {
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

nav.scrolled {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Hero Section */
.hero-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.dark .hero-gradient {
    background: linear-gradient(135deg, #4c51bf 0%, #553c9a 100%);
}

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

/* Cards */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Skill badges */
.skill-badge {
    transition: all 0.2s ease;
}

.skill-badge:hover {
    transform: scale(1.05);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Form Styles */
input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Dark mode toggle */
.dark-mode-toggle {
    cursor: pointer;
    transition: transform 0.3s ease;
}

.dark-mode-toggle:hover {
    transform: rotate(180deg);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .mobile-menu {
        transition: max-height 0.3s ease;
    }
}

/* Loading animation */
.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}