/* ========================================
   Luis Pascual — Case Studies
   Matches index.html aesthetic
   ======================================== */

/* Font: Geist (local) */
@font-face {
    font-family: 'Geist';
    src: url('../fonts/Geist[wght].woff2') format('woff2');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

/* Font: Geist Pixel Triangle */
@font-face {
    font-family: 'GeistPixel';
    src: url('../fonts/GeistPixel-Triangle.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* ========================================
   Tokens de color (light / dark)
   ======================================== */
:root {
    color-scheme: light;
    --bg:             #FAF9F5;
    --text:           #141413;
    --text-secondary: #3a3a3a;
    --text-muted:     #6b6b6b;
    --text-em:        #171717;
    --border:         #e8e8e8;
    --link-line:      #b0b0b0;
    --phase-bg:       rgba(0, 0, 0, 0.03);
    --quote-border:   #d0d0d0;
    --bullet:         #c0c0c0;
    --dot:            225, 209, 199;
    --dot-base:       0.18;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        color-scheme: dark;
        --bg:             #111110;
        --text:           #ECEAE3;
        --text-secondary: #B5B2AA;
        --text-muted:     #6E6B64;
        --text-em:        #F0EDE6;
        --border:         #252420;
        --link-line:      #454340;
        --phase-bg:       rgba(255, 255, 255, 0.04);
        --quote-border:   #3a3632;
        --bullet:         #454340;
        --dot:            96, 90, 78;
        --dot-base:       0.04;
    }
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg:             #111110;
    --text:           #ECEAE3;
    --text-secondary: #B5B2AA;
    --text-muted:     #6E6B64;
    --text-em:        #F0EDE6;
    --border:         #252420;
    --link-line:      #454340;
    --phase-bg:       rgba(255, 255, 255, 0.04);
    --quote-border:   #3a3632;
    --bullet:         #454340;
    --dot:            96, 90, 78;
    --dot-base:       0.04;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Base */
html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* ========================================
   Custom cursor (solo en dispositivos con ratón)
   ======================================== */
@media (pointer: fine) {
    html, * { cursor: none !important; }

    .cursor {
        position: fixed;
        top: 0;
        left: 0;
        width: 18px;
        height: 18px;
        border: 1px solid var(--text-secondary);
        border-radius: 50%;
        pointer-events: none;
        z-index: 9999;
        opacity: 0;
        transition: opacity 0.25s ease, background 0.15s ease, border-color 0.15s ease;
        will-change: transform;
    }

    .cursor--visible { opacity: 1; }
    .cursor--hover   { background: var(--text-secondary); border-color: transparent; }
}

body {
    font-family: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.65;
    color: var(--text);
    background-color: var(--bg);
    transition: background-color 0.25s ease, color 0.25s ease;
}

#dot-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    padding: 8px 16px;
    background-color: var(--text);
    color: var(--bg);
    text-decoration: none;
    font-size: 0.866rem;
    border-radius: 4px;
    z-index: 100;
}

.skip-link:focus {
    top: 16px;
    opacity: 1;
}

/* ========================================
   Theme toggle
   ======================================== */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 24px;
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--bg);
    cursor: pointer;
    color: var(--text-secondary);
    padding: 6px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease, border-color 0.2s ease;
    z-index: 10;
}

.theme-toggle:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--text);
    outline-offset: 2px;
    border-radius: 6px;
}

.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: flex; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
    :root:not([data-theme="light"]) .theme-toggle .icon-sun  { display: flex; }
}
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun  { display: flex; }

/* Layout */
main {
    position: relative;
    z-index: 1;
    width: min(680px, 100% - 48px);
    margin: 0 auto;
    padding: 80px 0 48px;
    animation: fadeIn 0.8s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Typography */
h1 {
    font-family: 'GeistPixel', 'Geist', sans-serif;
    font-size: 2.6rem;
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1.3;
    margin-bottom: 24px;
}

h2 {
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 0;
    margin-bottom: 12px;
    margin-top: 48px;
}

h2:first-child {
    margin-top: 0;
}

h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-top: 24px;
    margin-bottom: 8px;
}

p {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

p:last-child {
    margin-bottom: 0;
}

/* Links */
a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
    text-decoration-color: var(--link-line);
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.6;
}

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--text);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Horizontal rules */
hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 48px 0;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 4px;
}

/* ========================================
   Back link
   ======================================== */
.back-link {
    display: inline-block;
    font-size: 0.866rem;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 32px;
}

.back-link:hover {
    color: var(--text);
    opacity: 1;
}

/* ========================================
   Case study hero
   ======================================== */
.detail-hero img {
    margin-top: 16px;
    margin-bottom: 24px;
}

/* ========================================
   Phase info boxes
   ======================================== */
.phaseorange,
.phaseinvestigador,
.phase {
    background-color: var(--phase-bg);
    padding: 24px;
    border-radius: 6px;
    margin-bottom: 8px;
    font-size: small;
    line-height: normal;
}

.phase-title {
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 12px;
    margin-top: 0;
}

.phase-tools {
    margin-top: 4px;
    font-weight: 400;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
}

/* ========================================
   Content sections
   ======================================== */
.detail-section {
    margin-bottom: 0;
}

.highlight-quote {
    font-family: Georgia, 'Times New Roman', serif;
    font-style: italic;
    color: var(--text-secondary);
    border-left: 2px solid var(--quote-border);
    padding: 12px 20px;
    margin: 20px 0;
    font-size: 0.933rem;
    line-height: 1.6;
}

/* ========================================
   Process lists
   ======================================== */
.process-list {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
}

.process-list li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 6px;
    font-size: 0.933rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.process-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 5px;
    height: 5px;
    background-color: var(--bullet);
    border-radius: 50%;
}


.process-list-number {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
    counter-reset: process-counter;
}

.process-list-number li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 6px;
    font-size: 0.933rem;
    color: var(--text-secondary);
    line-height: 1.6;
    counter-increment: process-counter;
}

.process-list-number li::before {
    content: counter(process-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 18px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
    line-height: 1.65;
}

/* ========================================
   Gallery
   ======================================== */
.gallery-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.gallery-grid img {
    border: 1px solid var(--border);
}

.gallery-grid .phase-tools {
    margin-top: 4px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 400;
    text-align: center;
}

/* ========================================
   Results
   ======================================== */
.results .phase-tools {
    color: var(--text);
}

/* ========================================
   Footer
   ======================================== */
footer {
    margin-top: 0;
}

footer p {
    margin-bottom: 8px;
}

.social {
    display: flex;
    gap: 16px;
}

.social a {
    font-size: 0.933rem;
}

.copyright {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 24px;
}

/* ========================================
   Responsive
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

@media (max-width: 768px) {
    main {
        padding: 56px 0 40px;
    }
}

@media (max-width: 540px) {
    main {
        padding: 48px 0 40px;
    }

    h1 {
        font-size: 1.4rem;
    }

    hr {
        margin: 36px 0;
    }
}