/* Design System CSS for Isla Meyn Athlete Profile */
/* Based on Material Design 3 */

:root {
    /* Colors */
    --primary: #00020a;
    --on-primary: #ffffff;
    --primary-container: #001b44;
    --on-primary-container: #7084b3;
    --inverse-primary: #b1c6f9;
    
    --secondary: #bb0027;
    --on-secondary: #ffffff;
    --secondary-container: #e31e39;
    --on-secondary-container: #fffbff;
    
    --tertiary: #000208;
    --on-tertiary: #ffffff;
    --tertiary-container: #121d2e;
    --on-tertiary-container: #7a859a;
    
    --error: #ba1a1a;
    --on-error: #ffffff;
    --error-container: #ffdad6;
    --on-error-container: #93000a;
    
    --background: #f7fafc;
    --on-background: #181c1e;
    
    --surface: #f7fafc;
    --on-surface: #181c1e;
    --on-surface-variant: #44474f;
    --surface-variant: #e0e3e5;
    --inverse-surface: #2d3133;
    --inverse-on-surface: #eef1f3;
    
    --surface-dim: #d7dadc;
    --surface-bright: #f7fafc;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #f1f4f6;
    --surface-container: #ebeef0;
    --surface-container-high: #e5e9eb;
    --surface-container-highest: #e0e3e5;
    
    --outline: #75777f;
    --outline-variant: #c5c6d0;
    --surface-tint: #495e8a;
    
    /* Spacing */
    --base: 8px;
    --margin-mobile: 20px;
    --margin-tablet: 32px;
    --margin-desktop: 64px;
    --gutter: 24px;
    --container-max: 1280px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--background);
    color: var(--on-surface);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography Classes */
.display-xl {
    font-size: 72px;
    font-weight: 900;
    line-height: 80px;
    letter-spacing: -0.04em;
}

@media (max-width: 768px) {
    .display-xl {
        font-size: 48px;
        line-height: 52px;
    }
}

.headline-lg {
    font-size: 40px;
    font-weight: 800;
    line-height: 48px;
    letter-spacing: -0.02em;
}

@media (max-width: 768px) {
    .headline-lg {
        font-size: 32px;
        line-height: 38px;
    }
}

.headline-md {
    font-size: 24px;
    font-weight: 700;
    line-height: 32px;
}

.body-lg {
    font-size: 18px;
    font-weight: 400;
    line-height: 28px;
}

.body-md {
    font-size: 16px;
    font-weight: 400;
    line-height: 24px;
}

.label-bold {
    font-size: 14px;
    font-weight: 700;
    line-height: 20px;
    letter-spacing: 0.05em;
}

.label-sm {
    font-size: 12px;
    font-weight: 500;
    line-height: 16px;
}

/* Navigation */
nav {
    background-color: var(--surface);
    border-bottom: 1px solid var(--outline-variant);
}

nav a {
    color: var(--on-surface-variant);
    text-decoration: none;
    transition: color 0.2s ease;
}

nav a:hover {
    color: var(--secondary);
}

nav a.active {
    color: var(--secondary);
    border-bottom: 2px solid var(--secondary);
}

/* Buttons */
button, .button {
    font-family: var(--font-family);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 4px;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--on-primary);
    padding: 12px 24px;
    font-weight: 700;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--on-secondary);
    padding: 12px 24px;
    font-weight: 700;
}

.btn-secondary:hover {
    opacity: 0.9;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--margin-mobile);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--margin-desktop);
    }
}

/* Cards */
.card {
    background-color: var(--surface-container);
    border: 1px solid var(--outline-variant);
    border-radius: 8px;
    padding: 24px;
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.1);
}

/* Forms */
input, textarea, select {
    font-family: var(--font-family);
    border: 1px solid var(--outline-variant);
    border-radius: 4px;
    padding: 12px 16px;
    color: var(--on-surface);
    background-color: var(--surface-container-lowest);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(187, 0, 39, 0.1);
}

/* Utilities */
.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-on-surface { color: var(--on-surface); }
.text-on-surface-variant { color: var(--on-surface-variant); }

.bg-primary { background-color: var(--primary); }
.bg-secondary { background-color: var(--secondary); }
.bg-surface { background-color: var(--surface); }
.bg-surface-container { background-color: var(--surface-container); }

.border-outline { border-color: var(--outline); }
.border-outline-variant { border-color: var(--outline-variant); }

/* Responsive Grid */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--gutter);
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr 1fr;
    }
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--gutter);
}

@media (min-width: 768px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* Responsive Utilities */
@media (max-width: 768px) {
    .hidden-mobile {
        display: none;
    }
}

@media (min-width: 768px) {
    .hidden-desktop {
        display: none;
    }
}