/* =========================================================
   Ariyan Basu — shared stylesheet
   Minimal, modern, responsive. Linked by all pages.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500&family=Inter:wght@400;500;600&display=swap');

/* --- Design tokens --- */
:root {
    --bg: #f6f5f1;
    --surface: #fffdf9;
    --ink: #211f1b;          /* headings / strong text */
    --text: #46433d;         /* body text */
    --muted: #8a857c;        /* labels, meta */
    --border: #e4e1d8;
    --border-strong: #cfcabd;
    --accent: #a8542f;       /* terracotta, used sparingly */
    --accent-soft: rgba(168, 84, 47, 0.10);

    --serif: 'Fraunces', 'Times New Roman', Times, serif;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --mono: 'Courier New', Courier, monospace;

    --maxw: 1280px;
    --gap: clamp(1.25rem, 3vw, 2.25rem);
    --pad: clamp(1.25rem, 4vw, 2.5rem);
    --radius: 10px;
    --ease: 0.25s ease;

    color-scheme: light;
}

/* --- Dark theme (opt-in via data-theme="dark"; site always starts light) --- */
:root[data-theme="dark"] {
    --bg: #1a1916;
    --surface: #232220;
    --ink: #f2efe8;
    --text: #cbc7bd;
    --muted: #908b80;
    --border: #34322d;
    --border-strong: #4c483f;
    --accent: #e08a63;
    --accent-soft: rgba(224, 138, 99, 0.15);

    color-scheme: dark;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: var(--pad);
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: clamp(1rem, 0.97rem + 0.2vw, 1.1rem);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    transition: background-color var(--ease), color var(--ease);
}

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

a {
    color: var(--accent);
    text-decoration: none;
}

/* =========================================================
   Layout
   ========================================================= */
.container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--gap);
    max-width: var(--maxw);
    margin: 0 auto;
}

/* Single-column pages (blog, contact) read better at a tighter measure */
.container:not(.split) {
    max-width: 900px;
}

/* Two-column pages (home, about) */
.container.split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 2fr);
    align-items: start;
}

.header {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.left-col {
    border-right: 1px solid var(--border);
    padding-right: var(--gap);
}

.center-col,
.right-col,
.main-col {
    min-width: 0;
}

.right-col {
    position: relative;
    min-height: 80vh;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
}

/* =========================================================
   Header & navigation
   ========================================================= */
.logo h1 {
    margin: 0;
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(2.25rem, 1.5rem + 3vw, 3.5rem);
    line-height: 1;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
}

.nav a {
    font-family: var(--sans);
    font-size: 0.95rem;
    color: var(--text);
    padding: 0.45rem 0.85rem;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: background-color var(--ease), color var(--ease), border-color var(--ease);
}

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

.nav a.active {
    border-color: var(--border-strong);
    color: var(--ink);
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    margin-left: 0.35rem;
    padding: 0;
    font-size: 1rem;
    line-height: 1;
    color: var(--text);
    background: transparent;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    cursor: pointer;
    transition: background-color var(--ease), color var(--ease), border-color var(--ease);
}

.theme-toggle:hover {
    background-color: var(--accent-soft);
    color: var(--accent);
    border-color: var(--accent);
}

/* =========================================================
   Shared text bits
   ========================================================= */
.subtitle {
    font-family: var(--sans);
    font-style: italic;
    font-size: 0.8rem;
    color: var(--muted);
    border-bottom: 1px dotted var(--muted);
    display: inline-block;
    padding-bottom: 2px;
}

/* =========================================================
   Home page
   ========================================================= */
.left-col h2 {
    font-family: var(--sans);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 0.75rem;
}

#timezone {
    font-family: var(--mono);
    font-size: 0.95rem;
    color: var(--ink);
}

#timezone i {
    font-style: normal;
}

.main-image {
    width: 100%;
    height: 100%;
    max-height: 82vh;
    object-fit: cover;
    border-radius: var(--radius);
}

/* =========================================================
   About page content
   ========================================================= */
.page-about .left-col h2 {
    margin-top: 2.25rem;
}

.intro {
    font-family: var(--serif);
    font-size: clamp(1.2rem, 1rem + 1vw, 1.55rem);
    line-height: 1.5;
    color: var(--ink);
    margin: 0 0 1.5rem;
}

.left-col p {
    margin: 0 0 1.25rem;
}

.left-col h3 {
    font-family: var(--serif);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--ink);
    margin: 1.25rem 0 0.5rem;
}

.left-col strong {
    color: var(--ink);
    font-weight: 600;
}

.left-col .note {
    font-size: 0.92rem;
    font-style: italic;
    color: var(--muted);
    margin: 0.25rem 0 1.5rem;
}

.left-col ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
}

.left-col ul li {
    position: relative;
    padding-left: 1.25rem;
    margin: 0.45rem 0;
    line-height: 1.6;
}

.left-col ul li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.left-col a {
    color: var(--text);
    text-decoration: underline;
    text-decoration-color: var(--border-strong);
    text-underline-offset: 3px;
    transition: color var(--ease), text-decoration-color var(--ease);
}

.left-col a:hover {
    color: var(--accent);
    text-decoration-color: var(--accent);
}

/* Canvas + readout panels (about page animation) */
canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    cursor: crosshair;
}

.stats-panel,
.output-display {
    position: absolute;
    font-family: var(--mono);
    font-size: 0.65rem;
    line-height: 1.5;
    color: var(--ink);
    padding: 6px 8px;
    z-index: 10;
    pointer-events: none;
    text-shadow: 0 0 3px var(--surface), 0 0 3px var(--surface), 0 0 6px var(--surface);
}

.stats-panel {
    top: 10px;
    right: 10px;
    min-width: 150px;
}

.output-display {
    bottom: 10px;
    right: 10px;
    max-width: 190px;
    word-wrap: break-word;
}

.stats-panel .stat-row {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    margin: 1px 0;
    border-bottom: 1px dotted var(--border-strong);
    padding-bottom: 1px;
}

.stats-panel .stat-label {
    color: var(--muted);
    font-weight: bold;
}

.stats-panel .stat-value {
    text-align: right;
    color: var(--ink);
}

.stats-panel .section-title,
.output-display .section-title {
    font-weight: bold;
    color: var(--accent);
    border-bottom: 1.5px solid var(--border-strong);
    padding-bottom: 1px;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    margin: 6px 0 3px;
}

.stats-panel .section-title:first-child,
.output-display .section-title {
    margin-top: 0;
}

.output-display .out-row {
    margin: 2px 0;
    font-size: 0.62rem;
    white-space: nowrap;
}

/* =========================================================
   Blog listing
   ========================================================= */
.blog-post {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.blog-post:last-child {
    border-bottom: none;
}

.post-date {
    font-family: var(--sans);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.5rem;
}

.post-title {
    font-family: var(--serif);
    font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.15rem);
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin: 0.4rem 0;
}

.post-title a {
    color: var(--ink);
    transition: color var(--ease);
}

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

.post-meta {
    font-family: var(--sans);
    font-size: 0.85rem;
    font-style: italic;
    color: var(--muted);
    margin: 0.4rem 0 1rem;
}

.post-excerpt {
    margin: 1rem 0 1.5rem;
    color: var(--text);
}

/* Shared button look */
.read-more,
.contact-link {
    display: inline-block;
    font-family: var(--sans);
    color: var(--ink);
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    transition: background-color var(--ease), color var(--ease), border-color var(--ease);
}

.read-more {
    font-size: 0.9rem;
    padding: 0.6rem 1.4rem;
}

.read-more:hover {
    background-color: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
}

/* =========================================================
   Contact page
   ========================================================= */
.page-contact .main-col {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    text-align: center;
    max-width: none;
}

.contact-intro {
    font-family: var(--serif);
    font-size: clamp(1.25rem, 1rem + 1vw, 1.6rem);
    line-height: 1.5;
    color: var(--ink);
    max-width: 600px;
    margin: 0 0 2.5rem;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    width: 100%;
    max-width: 420px;
}

.contact-link {
    font-size: 1.05rem;
    padding: 1rem 1.75rem;
    border-radius: var(--radius);
    border-color: var(--border);
}

.contact-link:hover {
    background-color: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
}

.contact-link:hover .contact-label {
    color: rgba(255, 255, 255, 0.6);
}

.contact-label {
    display: block;
    font-family: var(--sans);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.3rem;
    transition: color var(--ease);
}

/* =========================================================
   Gear page
   ========================================================= */
.gear-intro {
    font-family: var(--serif);
    font-size: clamp(1.15rem, 1rem + 0.8vw, 1.45rem);
    line-height: 1.5;
    color: var(--ink);
    margin: 0 0 2.5rem;
}

.gear-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--gap);
}

.gear-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.3rem 1.4rem;
    transition: border-color var(--ease);
}

.gear-item:hover {
    border-color: var(--border-strong);
}

.gear-role {
    font-family: var(--sans);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.4rem;
}

.gear-name {
    font-family: var(--serif);
    font-size: 1.3rem;
    font-weight: 500;
    line-height: 1.2;
    color: var(--ink);
    margin: 0 0 1rem;
}

.gear-specs {
    list-style: none;
    margin: 0;
    padding: 0;
    font-family: var(--mono);
    font-size: 0.85rem;
    line-height: 1.5;
}

.gear-specs li {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.35rem 0;
    border-bottom: 1px dotted var(--border-strong);
}

.gear-specs li:last-child {
    border-bottom: none;
}

.gear-specs .spec-key {
    color: var(--muted);
}

.gear-specs .spec-val {
    color: var(--ink);
    text-align: right;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
    .container.split {
        grid-template-columns: 1fr;
    }

    .left-col {
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding-right: 0;
        padding-bottom: var(--gap);
    }

    .right-col {
        min-height: 60vh;
    }
}

@media (max-width: 640px) {
    .header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1rem;
    }

    .nav {
        justify-content: center;
    }

    .right-col {
        min-height: 50vh;
    }

    .stats-panel,
    .output-display {
        font-size: 0.55rem;
        min-width: 120px;
    }

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