/* CSS Reset and Base Styles */
:root {
    /* Colors */
    --color-primary: #004D80;
    --color-accent: #228dff;
    --color-accent-light: #a4d0ff;
    --color-dark: #000000;
    --color-light: #ffffff;
    --color-gray: #6c757d;
    --color-text: #fffff3;
    --color-bg-dark: rgba(0, 0, 0, 0.8);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Monoton', cursive;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index layers */
    --z-background: 1;
    --z-content: 10;
    --z-overlay: 20;
    --z-modal: 30;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-weight: 300;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-dark);
    overflow-x: hidden;
    position: relative;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

p {
    margin-bottom: var(--space-sm);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary);
}

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-lg);
    font-size: clamp(2rem, 4vw, 3rem);
    /* Make all section titles visible by default */
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

/* Keep animated state for consistency but start visible */
.section-title.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Fade-in elements */
.fade-in-element {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-element.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Glass Morphism */
.glass-morph {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Buttons */
button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

.btn {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    border-radius: 50px;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-light);
}

.btn-primary:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
}

.btn-outline {
    border: 2px solid var(--color-light);
    color: var(--color-light);
}

.btn-outline:hover {
    background: var(--color-light);
    color: var(--color-dark);
}

/* Sections */
section {
    position: relative;
    padding: var(--space-xl) 0;
    z-index: var(--z-content);
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Media Queries */
@media (max-width: 768px) {
    :root {
        --space-md: 1.5rem;
        --space-lg: 2rem;
        --space-xl: 3rem;
    }
    
    section {
        padding: var(--space-lg) 0;
    }
}

/* Focus Styles */
:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Hide visually but keep accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ========================================
   UNIFIED MODAL SYSTEM
   ======================================== */

/* Base Modal Container */
.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

/* Modal Backdrop */
.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

/* Modal Content Container */
.modal-content {
    position: relative;
    background: var(--color-bg-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    max-width: 1200px;
    max-height: 90vh;
    width: 100%;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal.active .modal-content {
    transform: scale(1);
}

/* Universal Close Button */
.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
    display: grid;
    place-items: center;
    font-size: 20px;
    color: var(--color-light);
    line-height: 1;
    transform-origin: center;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.modal-close::after {
    content: '✕';
}

/* Modal Body */
.modal-body {
    overflow-y: auto;
    max-height: 90vh;
    padding: var(--space-lg);
    /* Hide scrollbar */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
}

.modal-body::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

/* Mobile Modal Optimizations */
@media (max-width: 768px) {
    .modal {
        padding: var(--space-xs);
        align-items: flex-start;
        padding-top: var(--space-sm);
    }
    
    .modal-content {
        max-height: 100vh;
        height: 100vh;
        border-radius: 0;
        margin: 0;
        display: flex;
        flex-direction: column;
    }
    
    .modal-body {
        padding: var(--space-md) var(--space-md) var(--space-xl) var(--space-md);
        max-height: none;
        height: auto;
        flex: 1;
    }
}