/* Caeliai Design System - Core Styles for Landing Page */
/* Fashion AI Research Company - Sophisticated & Avant-garde */

@font-face {
    font-family: 'Libertinus Serif';
    src: url('../fonts/LibertinusSerif-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'Libertinus Serif';
    src: url('../fonts/LibertinusSerif-SemiBold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
}

@font-face {
    font-family: 'Share Tech Mono';
    src: url('../fonts/ShareTechMono-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

:root {
    /* Caeliai Brand Colors - 60-30-8-2 Rule */
    --caeliai-white: #EBEBEB;     /* 60% - Dominant background (off-white) */
    --caeliai-charcoal: #2A2A2C;  /* 30% - Secondary panels/cards */
    --caeliai-sage: #BAD9B5;      /* 8% - Accent highlights/buttons */
    --caeliai-black: #0A0A0B;     /* Text and borders */
    --caeliai-red: #FF3E3E;       /* 2% - Error states, critical alerts */
    
    /* Typography */
    --font-serif: 'Libertinus Serif';    /* Headers, body text */
    --font-mono: 'Share Tech Mono';  /* Code, technical elements */
    
    /* Broken Border System */
    --border-thickness: 2px;
    --break-size: 25px;
    --transition-speed: 0.3s;
    
    /* Spacing System */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-serif);
    color: var(--caeliai-black);
    background: linear-gradient(0deg, rgba(186, 217, 181, 0.05), rgba(186, 217, 181, 0.05)), var(--caeliai-white);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Typography Hierarchy */
.caeliai-h1 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    line-height: 1.2;
    color: var(--caeliai-black);
    margin-bottom: var(--spacing-md);
}

.caeliai-h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--caeliai-black);
    margin-bottom: var(--spacing-sm);
}

.caeliai-h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--caeliai-black);
    margin-bottom: var(--spacing-sm);
}

.caeliai-body {
    font-family: var(--font-mono);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--caeliai-black);
    margin-bottom: var(--spacing-sm);
}

.caeliai-mono {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--caeliai-charcoal);
}

.caeliai-accent {
    color: var(--caeliai-sage);
    font-weight: 600;
}

/* Broken Border System - Core Signatures */
.broken-frame {
    position: relative;
    border: var(--border-thickness) solid var(--caeliai-charcoal);
    transition: all var(--transition-speed) ease;
    overflow: hidden;
}

/* Diagonal Cuts - Primary Signature */
.broken-diagonal-tr {
    clip-path: polygon(
        0 0,
        calc(100% - var(--break-size)) 0,
        100% var(--break-size),
        100% 100%,
        0 100%
    );
}

.broken-diagonal-tl {
    clip-path: polygon(
        var(--break-size) 0,
        100% 0,
        100% 100%,
        0 100%,
        0 var(--break-size)
    );
}

.broken-diagonal-br {
    clip-path: polygon(
        0 0,
        100% 0,
        100% calc(100% - var(--break-size)),
        calc(100% - var(--break-size)) 100%,
        0 100%
    );
}

.broken-diagonal-bl {
    clip-path: polygon(
        0 0,
        100% 0,
        100% 100%,
        var(--break-size) 100%,
        0 calc(100% - var(--break-size))
    );
}

/* Line Breaks - Secondary Style */
.line-side-breaks {
    border-left: none;
    border-right: none;
    position: relative;
}

.line-side-breaks::before,
.line-side-breaks::after {
    content: '';
    position: absolute;
    height: var(--border-thickness);
    background: var(--caeliai-sage);
    top: 50%;
    transform: translateY(-50%);
    width: var(--break-size);
}

.line-side-breaks::before {
    left: calc(-1 * var(--border-thickness));
}

.line-side-breaks::after {
    right: calc(-1 * var(--border-thickness));
}

/* Button System */
.caeliai-btn {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    padding: 12px 24px;
    border: var(--border-thickness) solid;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.caeliai-btn-primary {
    background: var(--caeliai-charcoal);
    color: var(--caeliai-white);
    border-color: var(--caeliai-charcoal);
}

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

.caeliai-btn-secondary {
    background: transparent;
    color: var(--caeliai-charcoal);
    border-color: var(--caeliai-charcoal);
}

.caeliai-btn-secondary:hover {
    background: var(--caeliai-charcoal);
    color: var(--caeliai-white);
    transform: translateY(-2px);
}

.caeliai-btn-accent {
    background: var(--caeliai-sage);
    color: var(--caeliai-black);
    border-color: var(--caeliai-sage);
}

.caeliai-btn-accent:hover {
    background: var(--caeliai-black);
    color: var(--caeliai-white);
    border-color: var(--caeliai-black);
    transform: translateY(-2px);
}

.caeliai-btn-alert {
    background: var(--caeliai-red);
    color: var(--caeliai-white);
    border-color: var(--caeliai-red);
}

.caeliai-btn-alert:hover {
    background: var(--caeliai-black);
    color: var(--caeliai-white);
    border-color: var(--caeliai-black);
    transform: translateY(-2px);
}

/* Card System */
.caeliai-card {
    background: var(--caeliai-white);
    padding: var(--spacing-lg);
    border: var(--border-thickness) solid var(--caeliai-charcoal);
    transition: all var(--transition-speed) ease;
}

.caeliai-card-dark {
    background: var(--caeliai-charcoal);
    color: var(--caeliai-white);
}

.caeliai-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(42, 42, 44, 0.1);
}

/* Layout Utilities */
.caeliai-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Responsive media */
img, svg, video {
    max-width: 100%;
    height: auto;
}

.caeliai-section {
    padding: var(--spacing-xxl) 0;
}

.caeliai-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.caeliai-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.caeliai-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.caeliai-flex {
    display: flex;
    gap: var(--spacing-md);
}

.caeliai-flex-center {
    align-items: center;
    justify-content: center;
}

.caeliai-flex-between {
    align-items: center;
    justify-content: space-between;
}

/* Research Metrics Display */
.caeliai-metric {
    text-align: center;
    padding: var(--spacing-md);
}

.caeliai-metric-value {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--caeliai-sage);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.caeliai-metric-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--caeliai-charcoal);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Vector Visualization Base */
.caeliai-viz {
    position: relative;
    min-height: 200px;
    background: linear-gradient(135deg, rgba(186, 217, 181, 0.05) 0%, transparent 50%);
    border: 1px solid rgba(42, 42, 44, 0.1);
    padding: var(--spacing-md);
}

.caeliai-viz-point {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--caeliai-sage);
    border-radius: 50%;
    transition: all var(--transition-speed) ease;
}

.caeliai-viz-point:hover {
    transform: scale(1.5);
    background: var(--caeliai-black);
}

/* Link Hover Effects */
a.broken-frame:hover {
    border-color: var(--caeliai-black);
}

/* Green button hover effects */
a.caeliai-btn-accent.broken-frame:hover {
    border-color: var(--caeliai-sage);
    border-width: 3px;
}

/* Animations */
@keyframes caeliai-fade-in {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes caeliai-pulse {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

.caeliai-animate-fade {
    animation: caeliai-fade-in 0.6s ease-out;
}

.caeliai-animate-pulse {
    animation: caeliai-pulse 2s ease-in-out infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --break-size: 16px;
        --border-thickness: 1.5px;
    }
    .caeliai-h1 { font-size: 2rem; }
    .caeliai-h2 { font-size: 1.5rem; }
    .caeliai-container { padding: 0 var(--spacing-sm); }
    .caeliai-section { padding: var(--spacing-xl) 0; }
    .caeliai-grid { gap: var(--spacing-md); }
}

@media (max-width: 480px) {
    :root {
        --break-size: 12px;
        --border-thickness: 1px;
    }
    .caeliai-h1 { font-size: 1.8rem; }
    .caeliai-card { padding: var(--spacing-md); }
    .caeliai-btn { padding: 10px 20px; font-size: 0.8rem; }
}