/* ==========================================================================
   nicolaswalker.com v4 — Design System
   Serif-first, clean, professional, fast.
   ========================================================================== */

/* ---------- Variables ---------- */
:root {
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-text: #1a1a1a;
    --color-text-muted: #6b6b6b;
    --color-text-light: #999999;
    --color-border: rgba(0, 0, 0, 0.08);
    --color-accent: #0a2e1d;
    --color-accent-light: #164a31;

    --font-serif: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

    --container: 1060px;
    --sp-xs: 0.5rem;
    --sp-sm: 1rem;
    --sp-md: 2rem;
    --sp-lg: 4rem;
    --sp-xl: 6rem;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-serif);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.25;
    color: var(--color-text);
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    color: var(--color-accent);
}

img {
    max-width: 100%;
    display: block;
}

ul,
ol {
    list-style: none;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--sp-md);
}

/* ---------- Header ---------- */
.site-header {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.header-left {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    white-space: nowrap;
}

.logo:hover {
    color: var(--color-text);
}

.main-nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.main-nav a {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-text-muted);
    letter-spacing: 0;
    transition: color 0.2s ease;
}

.main-nav a:hover {
    color: var(--color-accent);
}

.main-nav a.active {
    color: var(--color-text);
    font-weight: 500;
}

/* Clock Widget */
.clock-widget {
    display: flex;
    gap: 2rem;
    align-items: flex-end;
    flex-shrink: 0;
}

.clock-city {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
}

.clock-city-label {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
}

.clock-face {
    width: 100px;
    height: 100px;
}

/* ---------- Page Hero ---------- */
.page-hero {
    padding: var(--sp-xl) 0 var(--sp-lg);
}

.page-hero h1 {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    max-width: 700px;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.page-hero .lead {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 560px;
    line-height: 1.7;
    font-weight: 400;
}

/* ---------- Home Hero (special, ultra-minimal) ---------- */
.home-hero {
    padding: 8rem 0 6rem;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.home-hero h1 {
    font-size: clamp(2.8rem, 5vw, 4.2rem);
    max-width: 680px;
    letter-spacing: -0.025em;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.home-hero .descriptor {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.home-hero .bio {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    max-width: 520px;
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

.home-hero .now-link {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent);
    border-bottom: 1px solid var(--color-accent);
    padding-bottom: 2px;
}

.home-hero .now-link:hover {
    color: var(--color-accent-light);
    border-color: var(--color-accent-light);
}

/* ---------- Section ---------- */
.section {
    padding: var(--sp-xl) 0;
}

.section-title {
    font-size: 1.8rem;
    margin-bottom: var(--sp-lg);
}

.section-title::after {
    content: '';
    display: block;
    width: 32px;
    height: 1.5px;
    background-color: var(--color-accent);
    margin-top: 0.75rem;
}

/* ---------- Content Blocks ---------- */
.content-block {
    max-width: 680px;
}

.content-block p {
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
}

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

/* ---------- Entry List (Build Logs, Press, etc.) ---------- */
.entry-list {
    display: flex;
    flex-direction: column;
}

.entry-item {
    display: flex;
    gap: 2rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--color-border);
    align-items: baseline;
}

.entry-item:first-child {
    padding-top: 0;
}

.entry-item:last-child {
    border-bottom: none;
}

.entry-date {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--color-text-light);
    min-width: 100px;
    flex-shrink: 0;
    letter-spacing: 0.02em;
}

.entry-body h3 {
    font-size: 1.2rem;
    margin-bottom: 0.35rem;
    font-weight: 600;
}

.entry-body p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.entry-tag {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
    margin-top: 0.5rem;
    display: inline-block;
}

/* ---------- Principles List ---------- */
.principle-item {
    display: flex;
    gap: 2rem;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.principle-item:last-child {
    border-bottom: none;
}

.principle-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    min-width: 60px;
    line-height: 1;
    flex-shrink: 0;
}

.principle-body h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.principle-body p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ---------- Gear Grid ---------- */
.gear-section {
    margin-bottom: var(--sp-lg);
}

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

.gear-section h3 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.gear-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.gear-item {
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.gear-item h4 {
    font-size: 1rem;
    margin-bottom: 0.3rem;
    font-weight: 600;
}

.gear-item p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ---------- Random Grid ---------- */
.random-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.random-card {
    padding: 2rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.random-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.random-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ---------- About Timeline ---------- */
.timeline {
    position: relative;
    padding-left: 3rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1.5px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: 3rem;
    opacity: 0.35;
    transition: opacity 0.4s ease;
}

.timeline-item.active {
    opacity: 1;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -3rem;
    top: 0.5rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-border);
    transform: translateX(-50%);
    margin-left: 0.75px;
    transition: background 0.4s ease;
}

.timeline-item.active::before {
    background: var(--color-accent);
}

.timeline-year {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    margin-bottom: 0.4rem;
}

.timeline-item h3 {
    font-size: 1.15rem;
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.timeline-item p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    max-width: 560px;
}

/* ---------- Verify ---------- */
.verify-block {
    max-width: 600px;
    padding: 2.5rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.verify-block h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.verify-fingerprint {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.85rem;
    background: var(--color-bg);
    padding: 1rem 1.25rem;
    border: 1px solid var(--color-border);
    word-break: break-all;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.verify-link {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 500;
    border-bottom: 1px solid var(--color-accent);
    padding-bottom: 1px;
}

/* ---------- Contact ---------- */
.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 400px;
}

.contact-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 1rem;
}

.contact-link:last-child {
    border-bottom: none;
}

.contact-link span {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ---------- Footer ---------- */
.site-footer {
    padding: 3rem 0;
    border-top: 1px solid var(--color-border);
    margin-top: var(--sp-xl);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 600;
    display: block;
    margin-bottom: 0.2rem;
}

.footer-info p {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.footer-links a {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

.footer-links a:hover {
    color: var(--color-accent);
}

/* ---------- Mobile Nav Toggle ---------- */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    flex-direction: column;
    gap: 4px;
    z-index: 50;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--color-text);
    transition: transform 0.2s ease;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .clock-widget {
        gap: 0.75rem;
    }

    .clock-face {
        width: 75px;
        height: 75px;
    }

    .main-nav ul {
        gap: 0.75rem;
    }

    .entry-item {
        flex-direction: column;
        gap: 0.25rem;
    }

    .principle-item {
        flex-direction: column;
        gap: 0.75rem;
    }

    .principle-number {
        font-size: 1.8rem;
        min-width: auto;
    }
}

@media (max-width: 700px) {
    .nav-toggle {
        display: flex;
    }

    .header-left {
        width: 100%;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .main-nav {
        display: none;
        width: 100%;
        order: 3;
        animation: fadeIn 0.3s ease forwards;
    }

    .main-nav.open {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: flex-end;
        gap: 0.85rem;
        padding-top: 1.25rem;
        padding-bottom: 0.5rem;
        margin-top: 1rem;
        border-top: 1px solid var(--color-border);
    }

    .main-nav a {
        font-size: 1.1rem;
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(-5px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .header-inner {
        flex-wrap: wrap;
    }

    .clock-face {
        width: 50px;
        height: 50px;
    }

    .home-hero {
        padding: 4rem 0 3rem;
        min-height: auto;
    }

    .home-hero h1 {
        font-size: 2.2rem;
    }

    .page-hero {
        padding: var(--sp-lg) 0 var(--sp-md);
    }

    .footer-inner {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }

    .timeline {
        padding-left: 2rem;
    }

    .random-grid {
        grid-template-columns: 1fr;
    }

    .gear-list {
        grid-template-columns: 1fr;
    }
}