/* ========================================
   COMPONENT IMPORTS
   ======================================== */

/* ========================================
   BASE STYLES & LAYOUT
   ======================================== */

* {
    box-sizing: border-box;
}

html {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background: var(--bg-primary);
}

body {
    min-height: 100vh;
    margin: 0;
    padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom);
    font-family: var(--font-body);
    line-height: 1.6;
    background: var(--bg-primary);
    color: var(--text-secondary);
    transition: background-color var(--transition-base), color var(--transition-base);
    font-size: var(--type-base);
    display: flex;
    flex-direction: column;
    letter-spacing: -0.01em;
}

.content {
     padding: clamp(1rem, 1.5vw, 1.5rem) var(--content-padding) 2rem;
     margin: 0 auto;
     max-width: var(--max-content-width);
     width: 100%;
     min-height: 500px;
 }

main {
     flex: 1;
     min-height: 0;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h2 {
    color: var(--color-primary);
    margin: var(--section-spacing) 0 var(--spacing-md);
    font-size: clamp(1.2rem, 3vw, 1.55rem);
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: 0.01em;
    line-height: 1.2;
    text-align: left;
}

h3,
h4 {
    color: var(--accent-primary);
    font-size: clamp(1rem, 3vw, 1.25rem);
    font-family: var(--font-display);
    font-weight: 600;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    line-height: 1.3;
    text-align: left;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.2s ease;

    &:hover,
    &:focus {
        opacity: 0.7;
    }
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 3px solid var(--accent-primary);
    outline-offset: 2px;
}

button:focus:not(:focus-visible),
input:focus:not(:focus-visible) {
    outline: none;
}


/* ========================================
   PAGE TITLES
   ======================================== */

h1.page-title {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Canonical spacing — do not override per-page */
    margin: 0;
    padding: 0;
}

.page-title-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
    vertical-align: middle;
    margin-right: 0.5rem;
    opacity: 0.85;
}



/* ========================================
   RESPONSIVE & ACCESSIBILITY
   ======================================== */

@media (max-width: 768px) {
    :root {
        --content-padding: var(--spacing-sm);
        --section-spacing: var(--spacing-lg);
    }

    h1.page-title {
        font-size: 0.8rem;
        /* spacing lives on .page-header — no margin override needed */
    }

    .table-wrapper td:first-child,
    .table-wrapper th:first-child {
        min-width: 80px;
        padding: var(--spacing-xs) calc(var(--spacing-xs) / 2);
        font-size: .8em;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }

    .card:hover,
    .logo:hover {
        transform: none;
    }
}

@media print {
    body {
        background: var(--color-white);
        color: var(--color-black);
        font-size: 12pt;
    }

    .page-image,
    .site-header::before,
    img[alt*=Image] {
        display: none;
    }
}

/* Source toggle button style */
.source-toggle-btn {
    padding: 0;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font: inherit;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: color 0.2s ease;
}

.source-toggle-btn:hover {
    color: var(--text-secondary);
}

.source-toggle-btn.active {
    color: var(--text-primary);
}

.source-toggle-btn + .source-toggle-btn::before {
    content: '|';
    margin-right: var(--spacing-xs);
    color: var(--text-muted);
    opacity: 0.4;
}

/* Dark mode filter overrides - theme.css handles html.dark-mode via CSS variables */
@media (prefers-color-scheme: dark) {
    html:not(.theme-init) .filters .filter-btn {
        background: var(--color-dark-bg-secondary, #374151);
        color: var(--color-dark-text-secondary, #d1d5db);
    }

    html:not(.theme-init) .filters .filter-btn:hover {
        background: var(--color-dark-bg-primary, #1f2937);
    }

    html:not(.theme-init) .filters .filter-btn.active {
        background: var(--logo-teal, #2c5f5a);
        color: white;
    }
}

/* ========================================
   ACCESSIBILITY: SKIP LINK
   ======================================== */

.skip-to-content {
    position: absolute;
    left: -9999px;
    z-index: 9999;
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 0 0 4px 4px;
}

.skip-to-content:focus {
    left: 50%;
    transform: translateX(-50%);
    top: 0;
}

/* ==============================================================
   RESPONSIVE UTILITIES & MAINTAINABILITY HELPERS
   --------------------------------------------------------------
   • Central breakpoint variables (mobile‑first)
   • .responsive-grid – reusable grid that adapts to screen width
   • .scrollable-x – enable horizontal scroll for overflow content
   • .flex-wrap‑center – useful for flex containers on small screens
   • .hide‑sm / .show‑sm – simple visibility toggles
   --------------------------------------------------------------
   These utilities can be used on any page without creating new CSS files.
   ============================================================== */

/* Breakpoint variables – used in media queries throughout the site */
:root {
  --bp-sm: 480px;   /* small phones */
  --bp-md: 768px;   /* tablets */
  --bp-lg: 1024px;  /* small laptops */
}

/* Responsive grid that automatically shrinks columns on narrow screens */
.responsive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md, 1rem);
  width: 100%;
  overflow-x: auto; /* fallback for ultra‑narrow viewports */
  -webkit-overflow-scrolling: touch;
}

/* Utility to force horizontal scrolling when content exceeds viewport */
.scrollable-x {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Centered flex‑wrap for small screens */
.flex-wrap-center {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm, 0.5rem);
}

/* Visibility helpers – hide/show on mobile */
.hide-sm { display: block; }
.show-sm { display: none; }
@media (max-width: var(--bp-sm)) {
  .hide-sm { display: none !important; }
  .show-sm { display: block !important; }
}