/* ========================================
   COMPONENTS.CSS - Component Styles
   Web Personal José Arbelaez — Astro
   ======================================== */

/* ----------------------------------------
   Site Header
   ---------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) 0;
    transition: background-color var(--transition-slow), border-color var(--transition-slow);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-header__name {
    font-family: var(--font-body);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-text);
    text-decoration: none;
    white-space: nowrap;
    transition: color var(--transition-fast);
}

.site-header__name:hover {
    color: var(--color-primary);
}

.site-header__controls {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Grupo tipo selector: misma altura y radio que el theme-toggle (36px) */
.site-view-switcher {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    flex: 0 0 auto;
    padding: 2px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.site-view-switcher__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    color: var(--color-text-secondary);
    border-radius: calc(var(--radius-md) - 2px);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.site-view-switcher__link:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-alt);
}

.site-view-switcher__link--active {
    color: var(--color-text);
    background-color: var(--color-surface);
}

.site-view-switcher__link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.site-view-switcher__link svg {
    width: 18px;
    height: 18px;
}

/* ----------------------------------------
   Language Switcher
   ---------------------------------------- */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.lang-switcher__link {
    font-family: var(--font-ui);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--color-text-muted);
    text-decoration: none;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.lang-switcher__link:hover {
    color: var(--color-text);
    background-color: var(--color-bg-alt);
}

.lang-switcher__link--active {
    color: var(--color-primary);
    font-weight: var(--font-semibold);
}

/* ----------------------------------------
   Theme Toggle
   ---------------------------------------- */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.theme-toggle:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: var(--color-bg-alt);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
}

/* Light mode: show moon (click to go dark), hide sun */
.theme-toggle__sun {
    display: none;
}

.theme-toggle__moon {
    display: block;
}

/* Dark mode: show sun (click to go light), hide moon */
[data-theme="dark"] .theme-toggle__sun {
    display: block;
}

[data-theme="dark"] .theme-toggle__moon {
    display: none;
}

/* ----------------------------------------
   Footer
   ---------------------------------------- */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 90;
    padding: var(--space-12) 0 var(--space-6);
    text-align: center;
    background: linear-gradient(to top, var(--color-background) 60%, transparent);
    transform: translateY(0);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

/* Se oculta al hacer scroll y reaparece tras 2 segundos de inactividad. */
.footer--hidden {
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
}

.reading-end-sentinel {
    display: block;
    width: 1px;
    height: 1px;
    pointer-events: none;
}

.footer__reader-panel {
    display: block;
}

.footer--reader .footer__standard-panel {
    display: none;
}

.footer--reader.footer--at-end .footer__reader-panel {
    display: none;
}

.footer--reader.footer--at-end .footer__standard-panel {
    display: block;
}

.footer__reader-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-4);
}

.footer__reader-control {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    color: var(--color-text-secondary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.footer__reader-control--width {
    border-color: var(--color-border);
}

.footer__reader-control:hover,
.footer__reader-control:focus-visible {
    color: var(--color-primary);
    background: var(--color-bg-alt);
    border-color: var(--color-primary);
}

.footer__reader-control:focus-visible,
.footer__focus-button:focus-visible,
.focus-view-exit:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.footer__reader-control svg,
.focus-view-exit svg {
    width: 18px;
    height: 18px;
}

.reader-width-icon--reduce {
    display: none;
}

.reader-wide .reader-width-icon--expand {
    display: none;
}

.reader-wide .reader-width-icon--reduce {
    display: block;
}

.footer__focus-button {
    padding: 0;
    font-family: var(--font-ui);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    background: transparent;
    border: 0;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.footer__focus-button:hover,
.footer__focus-button:focus-visible {
    color: var(--color-primary);
}

.focus-view .site-header {
    display: none;
}

.focus-view .footer--reader:not(.footer--at-end) {
    opacity: 0;
    pointer-events: none;
}

.focus-view-exit {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: 170;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    color: var(--color-text-secondary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: 0 6px 18px rgb(0 0 0 / 0.12);
    opacity: 0.55;
    cursor: pointer;
    transition: opacity var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.focus-view-exit[hidden] {
    display: none;
}

.focus-view-exit:hover,
.focus-view-exit:focus-visible {
    color: var(--color-primary);
    background: var(--color-bg-alt);
    border-color: var(--color-primary);
    opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
    .footer {
        transition: none;
    }

    .footer--hidden {
        transform: none;
    }
}

@media (max-width: 720px) {
    .reading-page .footer__reader-control--width {
        display: none;
    }
}

.footer__links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.footer__link {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-primary);
}

.anthropic-btn {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--space-1) var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.anthropic-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.footer__text {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ----------------------------------------
   Articles List
   ---------------------------------------- */
.articles-list {
    display: flex;
    flex-direction: column;
}

/* ----------------------------------------
   Back Link
   ---------------------------------------- */
.back-link {
    display: inline-flex;
    align-items: center;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    text-decoration: none;
    margin-bottom: var(--space-8);
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-primary);
}

/* ----------------------------------------
   Article Detail
   ---------------------------------------- */
.article__header {
    margin-bottom: var(--space-16);
    padding: var(--space-6) 0 var(--space-12);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.article__topic {
    margin: 0 0 var(--space-5);
    font-family: var(--font-ui);
    font-size: 0.72rem;
    font-weight: var(--font-semibold);
    letter-spacing: 0.15em;
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

.article__title {
    width: 100%;
    max-width: 1000px;
    font-size: clamp(2.6rem, 6vw, 5.2rem);
    font-weight: var(--font-bold);
    line-height: 1.02;
    letter-spacing: -0.04em;
    color: var(--color-text);
    margin: 0 auto var(--space-6);
    text-wrap: balance;
}

.article__subtitle {
    width: 100%;
    max-width: 780px;
    font-size: clamp(1.05rem, 1.8vw, 1.18rem);
    font-style: italic;
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin: 0 auto var(--space-6);
}

.article__meta {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.article__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

/* ----------------------------------------
   Tags
   ---------------------------------------- */
.tag {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--color-text-muted);
    padding: var(--space-1) var(--space-3);
    background: var(--color-bg-alt);
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

/* ----------------------------------------
   Search (articles page)
   ---------------------------------------- */
.search-container {
    margin-bottom: var(--space-8);
}

.search-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    outline: none;
    transition: border-color var(--transition-fast), background-color var(--transition-slow);
}

.search-input:focus {
    border-color: var(--color-primary);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

/* ----------------------------------------
   Responsive
   ---------------------------------------- */
@media (max-width: 640px) {
    .site-header__name {
        font-size: var(--text-base);
    }

    .site-header__controls {
        gap: 6px;
    }

    .site-view-switcher__link {
        width: 26px;
        height: 26px;
    }

    .site-view-switcher__link svg {
        width: 16px;
        height: 16px;
    }

    .lang-switcher__link {
        padding: var(--space-1);
    }

    .theme-toggle {
        width: 32px;
        height: 32px;
    }

    .article__title {
        font-size: clamp(2.2rem, 11vw, 3.35rem);
        line-height: 1.05;
        letter-spacing: -0.035em;
    }

    .article__header {
        margin-bottom: var(--space-10);
        padding-top: var(--space-3);
        padding-bottom: var(--space-8);
    }

    .footer__links {
        gap: var(--space-4);
    }

    .footer__reader-controls {
        gap: var(--space-4);
    }

    .focus-view-exit {
        top: var(--space-2);
        right: var(--space-2);
    }
}

@media (max-width: 380px) {
    .site-header__name {
        font-size: var(--text-sm);
    }

    .site-header__controls {
        gap: var(--space-1);
    }

    .site-view-switcher__link {
        width: 24px;
        height: 24px;
    }

    .site-view-switcher__link svg {
        width: 15px;
        height: 15px;
    }

    .lang-switcher {
        gap: 0;
    }

    .theme-toggle {
        width: 30px;
        height: 30px;
    }
}
/* ----------------------------------------
   Content Tabs
   ---------------------------------------- */
.content-tabs__nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-bottom: var(--space-8);
    border-bottom: 1px solid var(--color-border);
}

.content-tabs__tab {
    font-family: var(--font-body);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: var(--space-2) 0;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
    margin-bottom: -1px;
    margin-right: var(--space-8);
    line-height: var(--leading-tight);
}

.content-tabs__tab:hover {
    color: var(--color-text-secondary);
}

.content-tabs__tab--active {
    color: var(--color-text);
    border-bottom-color: var(--color-text);
}

.content-tabs__panel {
    display: none;
    animation: fadeIn 0.3s ease forwards;
}

.content-tabs__panel--active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 640px) {
    .content-tabs__tab {
        padding: var(--space-2) 0;
        font-size: var(--text-lg);
        margin-right: var(--space-6);
    }
}