/* ===================================
   Main Styles & Global Variables
   =================================== */

:root {
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --spacing-section: 4rem;
    --spacing-element: 2rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Trebuchet MS', 'Gill Sans', 'Segoe UI', sans-serif;
    line-height: 1.6;
    background: #f7f4ef;
    color: #1a1a1a;
    transition: var(--transition-smooth);
}

body.dark-theme {
    background: #0f1014;
    color: #f5f7fa;
}

/* Ensure media elements scale responsively */
img,
video,
canvas {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Ensure content is centered on large screens */
body,
body > main,
main,
article,
section {
    max-width: 1100px !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

body > main {
    padding: 0 2rem;
}

/* Section Containers */
.section-container {
    margin: var(--spacing-section) 0;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
}

.section-container h2 {
    margin-bottom: var(--spacing-element);
    font-size: 2rem;
    position: relative;
    display: inline-block;
}

.section-container h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: currentColor;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-container:hover h2::after {
    width: 100%;
}

/* Links */
a {
    transition: var(--transition-smooth);
    position: relative;
    color: inherit;
}

a:hover {
    transform: translateY(-1px);
}

/* Smooth fade-in animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stagger animation for multiple elements */
.slide-up {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
}

.slide-up:nth-child(1) { animation-delay: 0.1s; }
.slide-up:nth-child(2) { animation-delay: 0.2s; }
.slide-up:nth-child(3) { animation-delay: 0.3s; }
.slide-up:nth-child(4) { animation-delay: 0.4s; }
.slide-up:nth-child(5) { animation-delay: 0.5s; }

/* Responsive Design */
@media (max-width: 768px) {
    body > main {
        padding: 0 1.5rem;
    }
    
    .section-container {
        margin: 3rem 0;
    }
    
    .section-container h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    body > main {
        padding: 0 1rem;
    }
    
    .section-container {
        margin: 2.5rem 0;
    }
    
    .section-container h2 {
        font-size: 1.5rem;
    }
}

/* Print Styles */
@media print {
    .nav-container,
    theme-button,
    .scroll-indicator {
        display: none;
    }
    
    .section-container {
        page-break-inside: avoid;
    }
}