/* ==========================================================================
   NEXTECK DESIGN SYSTEM — EDITORIAL ADVISORY DOSSIER
   Boutique London IT Strategy & AI Audit Consultancy
   Human-crafted, calm, authoritative, print-inspired design language.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;1,6..72,400;1,6..72,500&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');

:root {
    /* Palette — Warm Editorial Paper & Ink */
    --paper: #F6F3EC;
    --paper-warm: #EFE9DE;
    --paper-card: #FFFFFF;
    --paper-dark: #1A1916;
    
    --ink: #181714;
    --ink-light: #2A2824;
    --ink-muted: #5E5A52;
    --ink-faint: #8A857B;
    
    --line: #DCD6C8;
    --line-subtle: #E8E2D5;
    --line-dark: #181714;
    
    /* Confident Single Accent: Deep British Advisory Green */
    --accent: #1F4D3A;
    --accent-hover: #143527;
    --accent-tint: #EAF2ED;
    --accent-border: #B6D1C4;
    
    /* Secondary Accent: Terracotta Stamp */
    --stamp: #9E3F27;
    --stamp-tint: #F7ECE8;
    
    /* Typography */
    --font-serif: 'Newsreader', Georgia, 'Times New Roman', serif;
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Space Mono', SFMono-Regular, Consolas, monospace;
    
    /* Spacing scale */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 40px;
    --space-2xl: 64px;
    --space-3xl: 96px;
    --space-4xl: 128px;
    
    /* Geometry */
    --radius-sm: 2px;
    --radius-md: 4px;
    --wrap-width: 1220px;
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--paper);
    color: var(--ink);
}

body {
    font-family: var(--font-sans);
    font-size: 1.02rem;
    line-height: 1.65;
    color: var(--ink);
    background-color: var(--paper);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
}

/* Subtle Paper Grain Overlay */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.028;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Headings & Typographic Hierarchy */
h1, h2, h3, h4, .serif {
    font-family: var(--font-serif);
    font-weight: 500;
    color: var(--ink);
    line-height: 1.14;
    letter-spacing: -0.015em;
}

h1 {
    font-size: clamp(2.4rem, 4.8vw, 3.8rem);
    line-height: 1.08;
    font-weight: 500;
}

h2 {
    font-size: clamp(1.85rem, 3.2vw, 2.65rem);
    line-height: 1.15;
    font-weight: 500;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.65rem);
    line-height: 1.25;
    font-weight: 500;
}

h4 {
    font-size: 1.15rem;
    line-height: 1.35;
    font-weight: 600;
}

p {
    margin-bottom: 1.25rem;
    color: var(--ink-light);
    max-width: 68ch;
}

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

p.lead {
    font-size: clamp(1.1rem, 1.35vw, 1.28rem);
    line-height: 1.6;
    color: var(--ink-muted);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.18s ease;
}

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

/* Focus styles for accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Layout Container */
.wrap {
    width: min(var(--wrap-width), 91%);
    margin-inline: auto;
    position: relative;
}

/* Editorial Dossier Grid System */
.grid-12 {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-xl);
}

.col-12 { grid-column: span 12; }
.col-8 { grid-column: span 8; }
.col-7 { grid-column: span 7; }
.col-6 { grid-column: span 6; }
.col-5 { grid-column: span 5; }
.col-4 { grid-column: span 4; }
.col-3 { grid-column: span 3; }

/* Editorial Stamps, Tags & Metadata */
.meta-tag, .eyebrow {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.85rem;
}

.eyebrow::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--accent);
}

.stamp-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--line);
    background-color: var(--paper-warm);
    color: var(--ink);
    border-radius: var(--radius-sm);
    transform: rotate(-1.2deg);
}

.stamp-badge.accent {
    border-color: var(--accent-border);
    background-color: var(--accent-tint);
    color: var(--accent);
}

.stamp-badge.terracotta {
    border-color: #E2B9B0;
    background-color: var(--stamp-tint);
    color: var(--stamp);
}

/* Editorial Hairline Rules & Dividers */
hr.rule {
    border: none;
    height: 1px;
    background-color: var(--line);
    margin: var(--space-2xl) 0;
}

.hairline-b {
    border-bottom: 1px solid var(--line);
}

.hairline-t {
    border-top: 1px solid var(--line);
}

/* Editorial Buttons — Flat, Rectangular, Confident */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    font-family: var(--font-sans);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    padding: 0.78rem 1.45rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.18s ease;
    border: 1px solid transparent;
    line-height: 1.2;
}

.btn-primary, .btn-gold {
    background-color: var(--accent);
    color: #FFFFFF;
    border-color: var(--accent);
}

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

.btn-secondary, .btn-outline {
    background-color: transparent;
    color: var(--ink);
    border-color: var(--ink);
}

.btn-secondary:hover, .btn-outline:hover {
    background-color: var(--ink);
    color: var(--paper);
}

.btn-ghost {
    background-color: transparent;
    color: var(--ink-muted);
    border-color: var(--line);
}

.btn-ghost:hover {
    border-color: var(--ink);
    color: var(--ink);
    background-color: var(--paper-warm);
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.94rem;
    font-weight: 600;
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-thickness: 1px;
    padding: 0;
    border: none;
    background: none;
}

.btn-link:hover {
    color: var(--accent-hover);
    text-decoration-thickness: 2px;
}

/* Calm Header & Announcement Bar */
.announcement-bar {
    background-color: var(--paper-warm);
    border-bottom: 1px solid var(--line);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.04em;
    text-align: center;
    padding: 0.45rem 1rem;
    color: var(--ink-muted);
}

.announcement-bar b {
    color: var(--ink);
    font-weight: 700;
}

nav.masthead {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(246, 243, 236, 0.96);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
}

.masthead-in {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.wordmark {
    display: flex;
    flex-direction: column;
}

.wordmark-title {
    font-family: var(--font-serif);
    font-size: 1.55rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--ink);
    line-height: 1;
}

.wordmark-subtitle {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin-top: 3px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.85rem;
}

.nav-item {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--ink-light);
    position: relative;
    padding-block: 0.25rem;
}

.nav-item:hover, .nav-item.active {
    color: var(--accent);
}

.nav-item.active::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--accent);
}

.burger-btn {
    display: none;
    background: none;
    border: 1px solid var(--line);
    padding: 0.4rem 0.65rem;
    font-size: 1rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    color: var(--ink);
}

/* Section Containers */
.sec {
    padding-block: clamp(4rem, 7vw, 6.5rem);
    position: relative;
}

.sec-warm {
    background-color: var(--paper-warm);
    border-block: 1px solid var(--line);
}

.sec-dark {
    background-color: var(--paper-dark);
    color: #F6F3EC;
    border-block: 1px solid #2D2B26;
}

.sec-dark h1, .sec-dark h2, .sec-dark h3, .sec-dark h4 {
    color: #FFFFFF;
}

.sec-dark p {
    color: #C5BFB3;
}

.sec-dark .meta-tag, .sec-dark .eyebrow {
    color: #9D9688;
}

.sec-dark .eyebrow::before {
    background-color: #83B89E;
}

/* Editorial Crosshair Mark (Technical dossier detail) */
.crosshair {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--line-dark);
    opacity: 0.35;
    user-select: none;
    line-height: 1;
}
.crosshair-tl { top: 12px; left: 12px; }
.crosshair-tr { top: 12px; right: 12px; }
.crosshair-bl { bottom: 12px; left: 12px; }
.crosshair-br { bottom: 12px; right: 12px; }

/* Editorial Numbered List (Replacing identical 3-col card grid) */
.editorial-list {
    list-style: none;
    margin-top: var(--space-xl);
}

.editorial-list-item {
    display: grid;
    grid-template-columns: 80px 1fr 1fr;
    gap: var(--space-xl);
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--line);
    align-items: baseline;
}

.editorial-list-item:last-child {
    border-bottom: 1px solid var(--line);
}

.editorial-num {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    color: var(--accent);
    font-weight: 700;
}

.editorial-item-title {
    font-family: var(--font-serif);
    font-size: 1.45rem;
    font-weight: 500;
    color: var(--ink);
    line-height: 1.25;
}

.editorial-item-desc {
    color: var(--ink-muted);
    font-size: 0.98rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* Dossier Ledger Table */
.dossier-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    background-color: var(--paper-card);
    margin-top: var(--space-xl);
}

.dossier-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    text-align: left;
}

.dossier-table th {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background-color: var(--paper-warm);
    color: var(--ink-muted);
    padding: 0.95rem 1.2rem;
    border-bottom: 1px solid var(--line);
    font-weight: 700;
}

.dossier-table td {
    padding: 1.1rem 1.2rem;
    border-bottom: 1px solid var(--line-subtle);
    color: var(--ink-light);
    vertical-align: top;
}

.dossier-table tr:last-child td {
    border-bottom: none;
}

.dossier-table tr:hover td {
    background-color: #FAF8F4;
}

/* Editorial Form Controls */
.form-group {
    margin-bottom: 1.45rem;
}

.form-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-muted);
    margin-bottom: 0.45rem;
}

.form-control {
    width: 100%;
    font-family: var(--font-sans);
    font-size: 0.98rem;
    padding: 0.85rem 1.05rem;
    background-color: var(--paper-card);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    color: var(--ink);
    transition: border-color 0.18s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

/* Broadsheet Editorial Footer */
footer.broadsheet-footer {
    background-color: var(--paper-dark);
    color: #E6E1D6;
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-xl);
    border-top: 1px solid #2B2924;
}

.footer-top {
    display: grid;
    grid-template-columns: 2.2fr 1fr 1fr 1.3fr;
    gap: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid #2E2B25;
}

.footer-masthead {
    font-family: var(--font-serif);
    font-size: 2.1rem;
    font-weight: 500;
    color: #FFFFFF;
    letter-spacing: -0.02em;
    line-height: 1;
}

.footer-col-title {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: #8C867A;
    margin-bottom: 1.25rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.footer-links a {
    color: #C2BBB0;
    font-size: 0.88rem;
    transition: color 0.18s ease;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: var(--space-xl);
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: #847E72;
}

/* Responsive Breakpoints */
@media (max-width: 960px) {
    .grid-12 {
        grid-template-columns: 1fr;
    }
    .col-8, .col-7, .col-6, .col-5, .col-4, .col-3 {
        grid-column: span 12;
    }
    .editorial-list-item {
        grid-template-columns: 50px 1fr;
        gap: var(--space-md);
    }
    .editorial-item-desc {
        grid-column: 2;
    }
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }
    .nav-menu {
        display: none;
    }
    .burger-btn {
        display: block;
    }
}

@media (max-width: 640px) {
    .footer-top {
        grid-template-columns: 1fr;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
    .editorial-list-item {
        grid-template-columns: 1fr;
    }
    .editorial-item-desc {
        grid-column: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}