/* francisco.fighterstech.com — light minimal theme, mobile-first, zero dependencies */

:root {
    --bg: #fdfdfc;
    --surface: #ffffff;
    --ink: #1a1d24;
    --muted: #5d6472;
    --faint: #8a91a0;
    --border: #e7e6e1;
    --accent: #1d4ed8;
    --accent-hover: #1e40af;
    --accent-soft: #eef2fd;
    --radius: 10px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    --max-width: 44rem;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: 1.25rem;
}

::selection {
    background: var(--accent-soft);
}

/* --- Accessibility --- */

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--ink);
    color: #fff;
    padding: 0.6rem 1rem;
    border-radius: 0 0 var(--radius) 0;
    z-index: 100;
}

.skip-link:focus {
    left: 0;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

/* --- Header --- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(253, 253, 252, 0.82);
    backdrop-filter: blur(14px) saturate(180%);
    -webkit-backdrop-filter: blur(14px) saturate(180%);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-block: 0.85rem;
}

.wordmark {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--ink);
    text-decoration: none;
    letter-spacing: 0.01em;
    white-space: nowrap;
}

.site-nav {
    display: none;
    gap: 1.25rem;
}

.site-nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9rem;
    padding-bottom: 2px;
    background-image: linear-gradient(currentColor, currentColor);
    background-repeat: no-repeat;
    background-position: 0 100%;
    background-size: 0% 1px;
    transition: color 160ms ease, background-size 220ms ease-out;
}

.site-nav a:hover {
    color: var(--ink);
    background-size: 100% 1px;
}

.lang-toggle {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.85rem;
    color: var(--faint);
    white-space: nowrap;
}

.lang-toggle button {
    background: none;
    border: none;
    padding: 0.2rem 0.45rem;
    border-radius: 6px;
    font: inherit;
    color: var(--faint);
    cursor: pointer;
    letter-spacing: 0.04em;
    transition: background-color 150ms ease, color 150ms ease, transform 100ms ease-out;
}

.lang-toggle button:hover {
    background: var(--accent-soft);
    color: var(--ink);
}

.lang-toggle button:active {
    transform: scale(0.94);
}

.lang-toggle button[aria-pressed="true"] {
    color: var(--ink);
    font-weight: 600;
}

/* --- Hero --- */

.hero {
    padding-block: 4.5rem 3rem;
}

.kicker {
    margin: 0 0 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
}

.hero h1 {
    margin: 0 0 1.1rem;
    font-family: var(--font-serif);
    font-size: clamp(2.1rem, 6vw, 3rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.lede {
    margin: 0 0 1.75rem;
    font-size: 1.15rem;
    line-height: 1.6;
    color: var(--muted);
    max-width: 38rem;
}

.hero-meta {
    margin: 1.5rem 0 0;
    font-size: 0.875rem;
    color: var(--faint);
}

/* --- Buttons --- */

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.btn {
    display: inline-block;
    padding: 0.6rem 1.15rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--ink);
    font-size: 0.92rem;
    font-weight: 500;
    text-decoration: none;
    transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease,
        box-shadow 200ms ease, transform 100ms ease-out;
}

.btn:hover {
    border-color: var(--faint);
    box-shadow: 0 1px 2px rgba(26, 29, 36, 0.05), 0 6px 16px rgba(26, 29, 36, 0.07);
    transform: translateY(-1px);
}

/* Feedback instantáneo al pulsar (pointer-down), estilo fluid interfaces */
.btn:active {
    transform: scale(0.97);
    box-shadow: none;
    transition-duration: 100ms;
}

.btn-primary {
    background: var(--ink);
    border-color: var(--ink);
    color: #fff;
}

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

/* --- Sections --- */

.section {
    padding-block: 2.75rem;
    border-top: 1px solid var(--border);
}

.section h2 {
    margin: 0 0 1.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--faint);
}

.section p {
    margin: 0 0 1rem;
}

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

/* --- Work --- */

.work-item {
    padding: 1.4rem 0 1.6rem;
    border-top: 1px solid var(--border);
}

.work-item:first-of-type {
    border-top: none;
    padding-top: 0;
}

.work-head {
    margin-bottom: 0.6rem;
}

.work-item h3 {
    margin: 0 0 0.2rem;
    font-size: 1.12rem;
    font-weight: 650;
    letter-spacing: -0.005em;
}

.work-role {
    margin: 0;
    font-size: 0.85rem;
    color: var(--faint);
}

.work-item > p {
    color: var(--muted);
}

.text-link {
    color: var(--accent);
    font-size: 0.92rem;
    font-weight: 500;
    text-decoration: none;
    padding-bottom: 2px;
    background-image: linear-gradient(currentColor, currentColor);
    background-repeat: no-repeat;
    background-position: 0 100%;
    background-size: 0% 1px;
    transition: background-size 220ms ease-out, color 160ms ease;
}

.text-link:hover {
    color: var(--accent-hover);
    background-size: 100% 1px;
}

/* --- Timeline --- */

.timeline {
    list-style: none;
    margin: 0;
    padding: 0;
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.15rem;
    padding: 1rem 0 1.1rem 1.15rem;
    border-left: 2px solid var(--border);
    position: relative;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -5px;
    top: 1.55rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
}

.timeline-when {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--faint);
}

.timeline-body h3 {
    margin: 0.1rem 0 0;
    font-size: 1.02rem;
    font-weight: 650;
}

.timeline-role {
    margin: 0.1rem 0 0;
    font-size: 0.92rem;
    color: var(--muted);
}

.timeline-where {
    margin: 0.1rem 0 0;
    font-size: 0.82rem;
    color: var(--faint);
}

/* --- Stack chips --- */

.chip-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.chip-list li {
    padding: 0.32rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    font-size: 0.85rem;
    color: var(--muted);
    transition: border-color 150ms ease, color 150ms ease, background-color 150ms ease;
}

.chip-list li:hover {
    border-color: var(--faint);
    color: var(--ink);
    background: var(--accent-soft);
}

/* --- Footer --- */

.site-footer {
    border-top: 1px solid var(--border);
    padding-block: 1.75rem;
    margin-top: 1rem;
}

.site-footer p {
    margin: 0;
    font-size: 0.82rem;
    color: var(--faint);
    text-align: center;
}

/* --- Larger screens --- */

@media (min-width: 640px) {
    .site-nav {
        display: flex;
        margin-left: auto;
    }

    .lang-toggle {
        margin-left: 1.5rem;
    }

    .site-footer p {
        text-align: left;
    }

    .hero {
        padding-block: 6rem 4rem;
    }

    .timeline-item {
        grid-template-columns: 10.5rem 1fr;
        gap: 0 1.5rem;
        padding-left: 1.5rem;
    }

    .timeline-when {
        text-align: right;
        padding-top: 0.15rem;
    }
}

@media (prefers-reduced-transparency: reduce) {
    .site-header {
        background: var(--bg);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .btn,
    .lang-toggle button,
    .chip-list li,
    .site-nav a,
    .text-link {
        transition-property: background-color, border-color, color;
    }

    .btn:hover,
    .btn:active,
    .lang-toggle button:active {
        transform: none;
    }
}