/* ========================================
   BASE STYLES & RESET
   ======================================== */

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

/* CSS Custom Properties */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --accent-secondary: #f9a8d4;
    --accent-tertiary: #a5b4fc;
    
    --text-color: #2d3748;
    --text-light: #718096;
    --text-white: #ffffff;
    
    --bg-color: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.25);
    --bg-glass-hover: rgba(255, 255, 255, 0.35);
    
    --border-radius: 15px;
    --border-radius-small: 8px;
    --border-radius-large: 25px;
    
    --shadow-small: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-large: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    --transition-fast: 0.3s ease;
    --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    --z-background: -1;
    --z-content: 1;
    --z-header: 100;
    --z-lightbox: 10000;
}

/* Typography */
body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(118, 75, 162, 0.1) 25%,
        rgba(240, 147, 251, 0.1) 50%,
        rgba(249, 168, 212, 0.1) 75%,
        rgba(165, 180, 252, 0.1) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0.5em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
    margin-bottom: 1em;
    color: var(--text-light);
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Focus States for Accessibility */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

button:focus,
a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

/* Selection */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}