/* Variables & Reset */
:root {
    --black: #111111;
    --white: #ffffff;
    --gray-light: #f4f4f4;
    --gray-mid: #cccccc;
    --gray-dark: #555555;
    
    --space-4: 4px;
    --space-8: 8px;
    --space-12: 12px;
    --space-16: 16px;
    --space-24: 24px;
    --space-40: 40px;
    --space-64: 64px;
    
    --font-base: "Helvetica Neue", Helvetica, Arial, sans-serif;
    --header-height: 64px;
    --header-height-mobile: 52px;
}

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

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

body {
    font-family: var(--font-base);
    color: var(--black);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden; /* Prevent body scroll but layout constraints handled below */
}

/* Global Typography & Rules */
h1, h2, h3, h4, .brand-name {
    font-weight: 700;
    line-height: 1.1;
    overflow-wrap: anywhere;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    letter-spacing: -0.04em;
    margin-bottom: var(--space-40);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-24);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    margin-bottom: var(--space-16);
}

p {
    margin-bottom: var(--space-24);
}

.body-large {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    line-height: 1.5;
}

a {
    color: var(--black);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
}

a:hover {
    text-decoration: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-24);
}

/* Reset flex/grid children min-width */
.container > *,
.card-horizontal > *,
.hero-grid > *,
.methodology-grid > *,
.contact-grid > *,
.footer-grid > * {
    min-width: 0;
}

/* Accessibility */
:focus-visible {
    outline: 3px solid var(--black);
    outline-offset: 4px;
}

/* Buttons */
.button-primary,
.button-secondary,
.button-compact,
.card-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-base);
    font-weight: 700;
    text-decoration: none;
    border: 2px solid var(--black);
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    overflow-wrap: anywhere;
}

.button-primary {
    background-color: var(--black);
    color: var(--white);
    padding: var(--space-12) var(--space-24);
    font-size: 1rem;
}

.button-primary:hover,
.button-primary:focus {
    background-color: var(--white);
    color: var(--black);
}

.button-secondary {
    background-color: var(--white);
    color: var(--black);
    padding: var(--space-12) var(--space-24);
    font-size: 1rem;
}

.button-secondary:hover,
.button-secondary:focus {
    background-color: var(--black);
    color: var(--white);
}

.button-compact {
    background-color: var(--black);
    color: var(--white);
    padding: var(--space-8) var(--space-16);
    font-size: 0.875rem;
}

.button-compact:hover,
.button-compact:focus {
    background-color: var(--white);
    color: var(--black);
}

/* Header */
.site-header {
    height: var(--header-height);
    border-bottom: 2px solid var(--black);
    background-color: var(--white);
    display: flex;
    align-items: center;
}

.header-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-24);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    text-decoration: none;
}

.brand-mark {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.brand-name {
    font-size: 1.25rem;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
}

.nav-list {
    list-style: none;
    display: flex;
    gap: var(--space-24);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
}

.nav-link:hover {
    text-decoration: underline;
}

.header-cta {
    display: flex;
    align-items: center;
}

.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-8);
    z-index: 100;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--black);
    margin: 5px 0;
    transition: transform 0.2s, opacity 0.2s;
}

/* Hero Section */
.hero-section {
    padding: var(--space-64) 0;
    border-bottom: 2px solid var(--black);
}

.hero-grid {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: var(--space-40);
    align-items: end;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    line-height: 1.4;
    margin-bottom: 0;
    max-width: 900px;
}

.hero-accent {
    display: flex;
    justify-content: flex-end;
}

.accent-block {
    width: 100%;
    aspect-ratio: 1;
    background: repeating-linear-gradient(
        45deg,
        var(--black),
        var(--black) 2px,
        transparent 2px,
        transparent 10px
    );
}

/* Sections */
.guides-section,
.methodology-section {
    padding: var(--space-64) 0;
    border-bottom: 2px solid var(--black);
}

.section-title {
    text-transform: uppercase;
    border-bottom: 2px solid var(--black);
    padding-bottom: var(--space-16);
}

/* Horizontal Card */
.card-horizontal {
    display: flex;
    flex-direction: row;
    border: 2px solid var(--black);
    margin-bottom: var(--space-40);
    background-color: var(--white);
    position: relative;
}

/* Offset background frame for Swiss minimal structural feel without breaking container */
.card-horizontal::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    width: 100%;
    height: 100%;
    background-color: var(--gray-light);
    border: 2px solid var(--black);
    z-index: -1;
    transition: transform 0.2s ease;
}

.card-horizontal:hover::after {
    transform: translate(4px, 4px);
}

.card-media {
    width: 40%;
    flex-shrink: 0;
    border-right: 2px solid var(--black);
}

.card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4/3;
}

.card-content {
    width: 60%;
    padding: var(--space-40);
    display: flex;
    flex-direction: column;
}

.card-meta {
    margin-bottom: var(--space-24);
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-8);
}

.tag {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    border: 1px solid var(--black);
    padding: var(--space-4) var(--space-8);
}

.card-title {
    margin-bottom: var(--space-16);
}

.card-description {
    margin-bottom: var(--space-24);
    flex-grow: 1;
}

.card-cta {
    align-self: flex-start;
    background-color: var(--black);
    color: var(--white);
    padding: var(--space-12) var(--space-24);
}

.card-cta:hover,
.card-cta:focus {
    background-color: var(--white);
    color: var(--black);
}

/* Methodology */
.methodology-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-64);
}

.methodology-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-40);
    justify-content: center;
    border-left: 2px solid var(--black);
    padding-left: var(--space-40);
}

.stat-block {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.stat-number {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1;
}

.stat-label {
    font-size: 1.25rem;
    font-weight: 700;
    text-transform: uppercase;
}

/* Article Page */
.article-page {
    padding: var(--space-64) 0;
}

.content-grid {
    max-width: 900px;
}

.article-header {
    margin-bottom: var(--space-64);
}

.article-tags {
    display: flex;
    gap: var(--space-8);
    margin-bottom: var(--space-24);
}

.article-title {
    margin-bottom: var(--space-24);
}

.article-lead {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 700;
    margin-bottom: var(--space-40);
}

.article-hero-image {
    width: 100%;
    border: 2px solid var(--black);
    aspect-ratio: 2/1;
    object-fit: cover;
    margin-bottom: var(--space-40);
}

.article-body h2 {
    margin-top: var(--space-64);
    border-top: 2px solid var(--black);
    padding-top: var(--space-16);
}

.article-body p {
    font-size: 1.125rem;
}

/* Legal Page */
.legal-page {
    padding: var(--space-64) 0;
}

.content-grid-single {
    max-width: 800px;
}

.last-updated {
    font-weight: 700;
    margin-bottom: var(--space-40);
    text-transform: uppercase;
}

.legal-content h2 {
    margin-top: var(--space-40);
    font-size: 1.75rem;
}

.legal-content ul {
    margin-left: var(--space-24);
    margin-bottom: var(--space-24);
}

.legal-content li {
    margin-bottom: var(--space-8);
}

/* Table */
.table-wrapper {
    width: 100%;
    overflow-x: auto;
    margin-bottom: var(--space-24);
    border: 2px solid var(--black);
}

.cookie-table {
    width: 100%;
    min-width: 600px;
    border-collapse: collapse;
}

.cookie-table th,
.cookie-table td {
    padding: var(--space-12) var(--space-16);
    border-bottom: 1px solid var(--gray-mid);
    text-align: left;
}

.cookie-table th {
    background-color: var(--gray-light);
    font-weight: 700;
    text-transform: uppercase;
}

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

code {
    background-color: var(--gray-light);
    padding: 2px 6px;
    font-family: monospace;
    font-size: 0.9em;
    color: var(--black);
}

/* Contact Page */
.contact-page {
    padding: var(--space-64) 0;
}

.contact-intro {
    max-width: 800px;
    margin-bottom: var(--space-64);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-64);
}

.contact-block {
    margin-bottom: var(--space-40);
}

.contact-heading {
    font-size: 1.5rem;
    text-transform: uppercase;
    border-bottom: 2px solid var(--black);
    padding-bottom: var(--space-8);
    margin-bottom: var(--space-16);
}

.contact-map img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border: 2px solid var(--black);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-24);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.form-group label {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
}

.form-control {
    font-family: var(--font-base);
    font-size: 1rem;
    padding: var(--space-12);
    border: 2px solid var(--black);
    background-color: var(--white);
    color: var(--black);
    border-radius: 0;
}

.form-control:focus {
    outline: none;
    border-color: var(--black);
    box-shadow: 4px 4px 0 0 var(--black);
}

.form-control.is-invalid {
    border-color: #d00000;
    background-color: #fff0f0;
}

.error-message {
    color: #d00000;
    font-size: 0.875rem;
    font-weight: 700;
}

.error-message:not([hidden]) {
    display: block;
}

.form-success {
    background-color: var(--black);
    color: var(--white);
    padding: var(--space-16);
    font-weight: 700;
}

.submit-btn {
    align-self: flex-start;
}

/* Footer */
.site-footer {
    background-color: var(--gray-light);
    border-top: 2px solid var(--black);
    padding: var(--space-64) 0 var(--space-24) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-40);
    margin-bottom: var(--space-64);
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: var(--space-16);
}

.footer-heading {
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: var(--space-16);
}

.footer-links ul,
.footer-legal ul {
    list-style: none;
}

.footer-links li,
.footer-legal li {
    margin-bottom: var(--space-8);
}

.footer-bottom {
    text-align: center;
    border-top: 2px solid var(--black);
    padding-top: var(--space-24);
    font-size: 0.875rem;
    font-weight: 700;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--black);
    color: var(--white);
    padding: var(--space-24);
    z-index: 1000;
    border-top: 2px solid var(--white);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-24);
}

.cookie-content p {
    margin: 0;
    flex: 1;
    min-width: 280px;
}

.cookie-content a {
    color: var(--white);
}

.cookie-actions {
    display: flex;
    gap: var(--space-12);
    flex-wrap: wrap;
}

.cookie-actions button {
    border-color: var(--white);
}

/* State Classes */
[hidden] {
    display: none !important;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
    h1 { margin-bottom: var(--space-24); }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-accent { display: none; }
    .methodology-grid { grid-template-columns: 1fr; }
    .methodology-stats { 
        flex-direction: row; 
        flex-wrap: wrap; 
        border-left: none; 
        border-top: 2px solid var(--black); 
        padding-left: 0; 
        padding-top: var(--space-40);
        justify-content: flex-start;
    }
}

@media (max-width: 767px) {
    .site-header { height: var(--header-height-mobile); }
    
    .nav-toggle { display: block; }
    
    .site-nav {
        position: absolute;
        top: var(--header-height-mobile);
        left: 0;
        width: 100%;
        background-color: var(--white);
        border-bottom: 2px solid var(--black);
        padding: var(--space-24);
        display: none;
        z-index: 99;
    }
    
    .site-nav.is-visible {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .header-cta { display: none; }

    /* Remove offsets on mobile as per global rules */
    .card-horizontal::after { content: none; }

    .card-horizontal {
        flex-direction: column;
    }

    .card-media {
        width: 100%;
        border-right: none;
        border-bottom: 2px solid var(--black);
        height: 240px;
    }

    .card-content {
        width: 100%;
        padding: var(--space-24);
    }
    
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 400px) {
    :root {
        --space-64: 40px;
        --space-40: 24px;
    }
    .card-media { height: 180px; }
    .cookie-actions { flex-direction: column; width: 100%; }
    .cookie-actions button { width: 100%; }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}