/* Global Styles - Theme-Aware with Glassmorphism */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* ============================================
   THEME TRANSITIONS
   ============================================ */
*,
*::before,
*::after {
    transition: var(--transition-theme);
    transition-property: background-color, color, border-color, box-shadow, fill, stroke;
}

/* Disable transitions for motion-sensitive users */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition: none !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

/* ============================================
   MATERIAL SYMBOLS
   ============================================ */
.material-symbols-outlined {
    font-family: 'Material Symbols Outlined';
    font-weight: 200;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-feature-settings: 'liga';
    -webkit-font-smoothing: antialiased;
    font-variation-settings: 'FILL' 0, 'wght' 200, 'GRAD' 0, 'opsz' 24;
    transition: color var(--transition-fast);
}

/* ============================================
   BASE HTML & BODY
   ============================================ */
html {
    scroll-behavior: smooth;
}

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

body {
    font-family: var(--font-family-primary);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-image: var(--gradient-hero);
    background-attachment: fixed;
    min-height: 100vh;
}

/* ============================================
   LAYOUT CONTAINER
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ============================================
   LINKS
   ============================================ */
a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

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

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-display);
    font-weight: var(--font-weight-medium);
    line-height: 1.2;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-light);
}

h2 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-light);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

p {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-regular);
}

/* ============================================
   TEXT UTILITIES
   ============================================ */
.text-center { 
    text-align: center; 
}

.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-muted {
    color: var(--color-text-muted);
}

.text-primary {
    color: var(--color-text-primary);
}

.text-secondary {
    color: var(--color-text-secondary);
}

/* ============================================
   SELECTION
   ============================================ */
::selection {
    background: var(--selection-bg);
    color: var(--selection-color);
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* ============================================
   FOCUS STYLES
   ============================================ */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip to main content link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-2) var(--spacing-4);
    z-index: 10000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   GLASSMORPHISM UTILITIES
   ============================================ */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-base);
}

.glass-card:hover {
    border-color: var(--glass-border-hover);
    background: var(--glass-bg-hover);
}

.glass-nav {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-strong);
    -webkit-backdrop-filter: var(--glass-blur-strong);
    border: 1px solid var(--glass-border);
}

/* ============================================
   ICON UTILITIES
   ============================================ */
.glow-icon {
    filter: drop-shadow(0 0 8px var(--color-primary-glow));
    transition: filter var(--transition-base);
}

.glow-icon:hover {
    filter: drop-shadow(0 0 12px var(--color-primary-glow));
}

/* ============================================
   ALTERNATE BACKGROUNDS
   ============================================ */
.alt-bg {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

[data-theme="light"] .alt-bg {
    background: var(--color-bg-secondary);
}

/* ============================================
   LOADING STATES
   ============================================ */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-bg-tertiary) 25%,
        var(--color-bg-card-hover) 50%,
        var(--color-bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--border-radius-md);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ============================================
   SPINNER
   ============================================ */
.spinner {
    width: 48px;
    height: 48px;
    border: 2px solid var(--color-primary-subtle);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   UTILITY CLASSES
   ============================================ */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.no-transition {
    transition: none !important;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    body {
        background: white !important;
        color: black !important;
    }
    
    .navbar,
    .site-footer,
    .theme-toggle,
    .mobile-menu-toggle {
        display: none !important;
    }
    
    .glass-card,
    .hero,
    .cta-section {
        background: white !important;
        border: 1px solid #ccc !important;
        box-shadow: none !important;
    }
}