/* ============================================================
   Typography readability — monospace-aware tweaks. No font change,
   targets line-height, measure, weight, and secondary-text contrast.
   ============================================================ */

/* Constrain reading measure on long-form copy (§6 line-length-control).
   ~68ch keeps lines comfortable on wide screens without breaking grids. */
.content-section p,
.content-section .lead {
    max-width: 68ch;
}

/* When the section centers its text, keep the measure centered too. */
.content-section.text-center p,
.content-section .text-center > p,
.contact-banner p {
    margin-left: auto;
    margin-right: auto;
}

/* Bootstrap's .lead defaults to weight 300 — too thin in JetBrains Mono.
   Bump to 400 and slightly larger leading. */
.lead {
    font-weight: 400 !important;
    line-height: 1.6;
}

/* Paragraph rhythm: consistent breathing between blocks. */
.content-section p {
    margin-bottom: 1rem;
}

.content-section p:last-child {
    margin-bottom: 0;
}

/* Headings: monospace looks thin at default weights — bump to 600. */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
}

/* .display-* headings keep their punchy size but get a sturdier weight
   so the monospace stems read as confident, not anemic. */
.display-1, .display-2, .display-3,
.display-4, .display-5, .display-6 {
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.15;
}

/* Secondary text contrast: Bootstrap's text-white-50 = rgba(255,255,255,0.5)
   gets close to WCAG AA limit on lighter dark surfaces. Bump to 0.72. */
.text-white-50 {
    color: rgba(255, 255, 255, 0.72) !important;
}

[data-theme="light"] .text-white-50 {
    color: rgba(0, 0, 0, 0.65) !important;
}

/* Small text (timestamps, captions): never below 0.8125rem (13px) for
   readability; below that on monospace, glyphs become hard to scan. */
small,
.small {
    font-size: 0.8125rem;
}

/* Footer copy: slightly bumped from 0.9rem so it stays scannable. */
.footer-text,
.footer-link {
    font-size: 0.95rem;
}

/* Icon sizing utilities — keep markup free of inline font-size styles. */
.icon-lg  { font-size: 2rem; }
.icon-xl  { font-size: 3rem; }
.icon-2xl { font-size: 6rem; }
.icon-3xl { font-size: 8rem; }

/* Scroll progress bar (used on pages with `scroll_progress: true`).
   The bar is fixed-top, its width is animated by js/scroll-animations.js. */
.scroll-progress-container {
    z-index: 9999;
    pointer-events: none;
}

.scroll-progress {
    height: 3px;
    width: 0;
    transition: width 0.1s ease;
}

/* When the scroll-progress bar is present, the sticky navbar must sit just
   under it. Apply via `.has-scroll-progress` on the header. */
.has-scroll-progress {
    z-index: 9998;
}

/* Thin progress bar variant used by the 404 countdown. */
.progress-thin {
    height: 6px;
}

/* Hero section: subtle Solarized accent stripe to lift visual hierarchy
   above sibling content-sections without changing density or color tokens. */
.section-hero {
    position: relative;
    overflow: hidden;
}

.section-hero::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 4px;
    background: var(--cyan);
}

[data-theme="light"] .section-hero::before {
    background: var(--orange);
}

/* ============================================================
   Button system — site-wide consistent interaction states.
   Overrides Bootstrap defaults where needed. All buttons share
   the same hover/active/focus/disabled rhythm regardless of variant.
   ============================================================ */
.btn {
    min-height: 44px;
    padding: 0.5rem 1.1rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border-width: 1px;
    transition: transform 150ms ease-out,
                background-color 150ms ease,
                border-color 150ms ease,
                color 150ms ease,
                box-shadow 200ms ease;
}

.btn-sm {
    min-height: 36px;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.btn-lg {
    min-height: 52px;
    padding: 0.75rem 1.5rem;
    font-size: 1.05rem;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

/* Tactile press feedback (§2 press-feedback): subtle scale within ~80ms. */
.btn:active {
    transform: translateY(0) scale(0.97);
    box-shadow: 0 1px 3px var(--shadow-color);
    transition-duration: 80ms;
}

/* Solarized focus ring instead of Bootstrap default (§1 focus-states). */
.btn:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
    box-shadow: none;
}

[data-theme="light"] .btn:focus-visible {
    outline-color: var(--orange);
}

/* Disabled state (§8 disabled-states). */
.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    transform: none;
    box-shadow: none;
}

/* Make outline-light readable on dark surfaces consistently. */
.btn-outline-light:hover {
    background-color: var(--bg-hover);
    color: var(--orange-yellow);
    border-color: var(--orange-yellow);
}

/* CTA is now the "marketing" size variant on top of the global system. */
.btn-cta {
    min-height: 48px;
    padding: 0.625rem 1.5rem;
    font-weight: 600;
    letter-spacing: 0.025em;
}

.btn-cta:hover {
    transform: translateY(-2px);
}

/* Honor user motion preference. */
@media (prefers-reduced-motion: reduce) {
    .btn,
    .btn:hover,
    .btn:active {
        transform: none;
        transition: background-color 0s, color 0s, border-color 0s;
    }
}

/* ---- Project cards -------------------------------------------------- */
.project-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border: 1px solid var(--base01);
    border-radius: 0.5rem;
    padding: 1.25rem;
    transition: transform var(--transition-speed) ease,
                border-color var(--transition-speed) ease,
                box-shadow var(--transition-speed) ease;
}

.project-card:hover {
    transform: translateY(-2px);
    border-color: var(--cyan);
    box-shadow: 0 8px 24px var(--shadow-color);
}

[data-theme="light"] .project-card:hover {
    border-color: var(--orange);
}

.project-card-thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: var(--bg-accent);
    border-radius: 0.375rem;
    margin-bottom: 1rem;
    color: var(--cyan);
    font-size: 2.5rem;
}

[data-theme="light"] .project-card-thumb {
    color: var(--orange);
}

.project-card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-card-title {
    color: var(--text-light);
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
}

.project-card-desc {
    color: var(--text-color);
    opacity: 0.8;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.project-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 1rem;
}

.project-tag {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    background: var(--bg-accent);
    border: 1px solid var(--base01);
    border-radius: 999px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-color);
    opacity: 0.85;
}

.project-card-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: auto;
}

/* Placeholder card variant: visually subdued, non-interactive feel */
.project-card-placeholder {
    border-style: dashed;
    opacity: 0.7;
}

.project-card-placeholder:hover {
    opacity: 1;
    transform: none;
    border-style: dashed;
    box-shadow: none;
}

.project-card-placeholder .project-card-thumb {
    color: var(--text-color);
    opacity: 0.5;
}

/* ---- Contact banner ------------------------------------------------- */
.contact-banner {
    border: 1px solid var(--base01);
    position: relative;
}

.contact-banner h2 {
    font-size: 1.5rem;
}

/* Bootstrap-icon variant of the footer social icon (used when no PNG sprite). */
.footer-social-icon-bi {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    font-size: 1.25rem;
    color: var(--cyan);
}

[data-theme="light"] .footer-social-icon-bi {
    color: var(--orange);
}