@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=Space+Mono:wght@400;700&display=swap');

:root {
    /* Primary Colors */
    --clr-navy: #111827;
    --clr-graphite: #20252D;
    /* Accent Colors */
    --clr-cobalt: #3E6FE8;
    --clr-coral: #E87561;
    /* Supporting Colors */
    --clr-ice: #DCE8F5;
    --clr-sand: #EEE8DC;
    --clr-white: #F8F8F5;
    
    /* Typography */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'Space Mono', monospace;

    /* Spacing & Layout */
    --wrapper: 1400px;
    --border-style: 1px solid var(--clr-graphite);
    --border-light: 1px solid rgba(32, 37, 45, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--clr-white);
    color: var(--clr-navy);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography Utilities */
h1, h2, h3, h4, h5 {
    font-family: var(--font-serif);
    font-weight: 600;
    color: var(--clr-navy);
    line-height: 1.2;
}

.tech-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--clr-cobalt);
    font-weight: 700;
    display: inline-block;
}

.tech-label-border {
    border-bottom: 2px solid var(--clr-cobalt);
    padding-bottom: 0.25rem;
    margin-bottom: 1rem;
}

.text-coral { color: var(--clr-coral); }
.text-cobalt { color: var(--clr-cobalt); }

/* Layout Utilities */
.container {
    max-width: var(--wrapper);
    margin: 0 auto;
    padding: 0 2rem;
}

.lab-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1px;
    background-color: var(--clr-graphite);
    border: var(--border-style);
}

.lab-grid > * {
    background-color: var(--clr-white);
}

.pad-section {
    padding: 6rem 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    border-radius: 0;
}

.btn-primary {
    background-color: var(--clr-cobalt);
    color: var(--clr-white);
    border: 1px solid var(--clr-cobalt);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--clr-navy);
    border: 1px solid var(--clr-navy);
}

.btn-outline:hover {
    background-color: var(--clr-navy);
    color: var(--clr-white);
}

.btn-text {
    background: none;
    color: var(--clr-cobalt);
    font-weight: 600;
    padding: 0;
    border: none;
}
.btn-text:hover {
    color: var(--clr-navy);
}

/* Header */
.site-header {
    background-color: var(--clr-white);
    border-bottom: var(--border-style);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo a {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clr-navy);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-mark {
    width: 24px;
    height: 24px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.main-nav a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--clr-graphite);
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: var(--transition);
}

.main-nav a:hover, .main-nav a.active {
    color: var(--clr-cobalt);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--clr-navy);
}

/* Hero Section */
.hero {
    background-color: var(--clr-sand);
    border-bottom: var(--border-style);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 70vh;
}

.hero-content {
    padding: 6rem 4rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-right: var(--border-style);
}

.hero h1 {
    font-size: 4.5rem;
    margin: 1.5rem 0;
    line-height: 1.1;
}

.hero p {
    font-size: 1.25rem;
    color: var(--clr-graphite);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-visual {
    position: relative;
    background-color: var(--clr-ice);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.9;
    mix-blend-mode: multiply;
}

.measurement-overlay {
    position: absolute;
    top: 2rem;
    left: 2rem;
    bottom: 2rem;
    right: 2rem;
    border: 1px dashed var(--clr-cobalt);
    pointer-events: none;
}

.measurement-overlay::before {
    content: 'FIG. 1 / EVERYDAY OBSERVATION';
    position: absolute;
    top: -10px;
    left: 10px;
    background: var(--clr-ice);
    padding: 0 10px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--clr-cobalt);
}

/* Observation Cards (Editorial layout) */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3rem;
    border-bottom: 2px solid var(--clr-navy);
    padding-bottom: 1rem;
}

.section-header h2 {
    font-size: 2.5rem;
}

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

.obs-card {
    border: var(--border-light);
    background: var(--clr-white);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    height: 100%;
}

.obs-card:hover {
    border-color: var(--clr-cobalt);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(17, 24, 39, 0.05);
}

.obs-img-wrapper {
    position: relative;
    height: 240px;
    overflow: hidden;
    border-bottom: var(--border-light);
}

.obs-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.obs-card:hover .obs-img-wrapper img {
    transform: scale(1.05);
}

.obs-card-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.obs-card h3 {
    font-size: 1.5rem;
    margin: 1rem 0;
}

.obs-card p {
    color: var(--clr-graphite);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.card-meta {
    background: var(--clr-sand);
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
    border-left: 2px solid var(--clr-coral);
}

/* Material Studies Specific Layout */
.material-row {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 0;
    border: var(--border-style);
    margin-bottom: 2rem;
}

.material-visual {
    border-right: var(--border-style);
    height: 100%;
    min-height: 300px;
}
.material-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.material-info {
    padding: 3rem;
    background: var(--clr-white);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.material-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* Article / Destination Pages */
.article-hero {
    background: var(--clr-navy);
    color: var(--clr-white);
    padding: 6rem 0;
    text-align: center;
    border-bottom: var(--border-style);
}

.article-hero h1 {
    color: var(--clr-white);
    font-size: 3.5rem;
    max-width: 800px;
    margin: 1rem auto;
}

.article-hero p {
    color: var(--clr-ice);
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
}

.article-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    padding: 4rem 0;
}

.article-content {
    font-size: 1.1rem;
    color: var(--clr-graphite);
}

.article-content h2 {
    font-size: 2rem;
    margin: 3rem 0 1rem;
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-image {
    margin: 2rem 0;
    border: var(--border-style);
    padding: 1rem;
    background: var(--clr-sand);
}

.article-image img {
    width: 100%;
    height: auto;
    display: block;
}

.article-image figcaption {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-align: center;
    margin-top: 1rem;
    color: var(--clr-navy);
}

.sidebar-module {
    background: var(--clr-ice);
    padding: 2rem;
    border: var(--border-style);
    margin-bottom: 2rem;
}

.sidebar-module h4 {
    font-family: var(--font-mono);
    font-size: 1rem;
    text-transform: uppercase;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--clr-navy);
    padding-bottom: 0.5rem;
}

/* Random Question Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--clr-white);
    width: 90%;
    max-width: 600px;
    padding: 3rem;
    border: 2px solid var(--clr-cobalt);
    position: relative;
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--clr-navy);
}

.rq-question {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin: 1rem 0 1.5rem;
}

.rq-answer {
    font-size: 1.1rem;
    color: var(--clr-graphite);
    margin-bottom: 2rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    color: var(--clr-navy);
}

.form-control {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--clr-graphite);
    background: var(--clr-white);
    font-family: var(--font-sans);
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--clr-cobalt);
    box-shadow: 0 0 0 2px rgba(62, 111, 232, 0.2);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
.site-footer {
    background-color: var(--clr-navy);
    color: var(--clr-white);
    padding: 5rem 0 2rem;
    border-top: 4px solid var(--clr-cobalt);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-brand h3 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--clr-white);
}

.footer-brand p {
    color: var(--clr-ice);
    opacity: 0.8;
    max-width: 300px;
}

.footer-col h4 {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--clr-coral);
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    color: var(--clr-ice);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--clr-white);
    padding-left: 5px;
}

.footer-address p {
    color: var(--clr-ice);
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
}

/* NEW Cookie Popup */
.new-cookie-popup {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    right: 2rem;
    max-width: 550px;
    background: var(--clr-white);
    border: 2px solid var(--clr-navy);
    padding: 2rem;
    z-index: 2147483647;
    box-shadow: 10px 10px 0px var(--clr-cobalt);
    color: var(--clr-navy);
}

.new-cookie-popup h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.new-cookie-popup p {
    font-size: 0.95rem;
    color: var(--clr-graphite);
    margin-bottom: 1.5rem;
}

.new-cookie-popup a {
    color: var(--clr-cobalt);
    font-weight: 500;
}

.new-cookie-popup .cookie-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.new-cookie-popup.hidden {
    display: none !important;
}

.cookie-option {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--clr-sand);
}

.cookie-option-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.cookie-option-header strong {
    font-family: var(--font-sans);
    color: var(--clr-navy);
}

.cookie-option-header span {
    font-size: 0.8rem;
    color: var(--clr-graphite);
    background: var(--clr-sand);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch .slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: .3s;
    border-radius: 24px;
}

.toggle-switch .slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

.toggle-switch input:checked + .slider {
    background-color: var(--clr-cobalt);
}

.toggle-switch input:checked + .slider:before {
    transform: translateX(20px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; }
    .hero-content { border-right: none; border-bottom: var(--border-style); padding: 4rem 2rem; }
    .hero-visual { min-height: 400px; }
    .article-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--clr-white);
        flex-direction: column;
        padding: 2rem;
        transition: var(--transition);
        border-top: var(--border-style);
    }
    
    .main-nav.active { left: 0; }
    .main-nav ul { flex-direction: column; gap: 1.5rem; font-size: 1.2rem; }
    .mobile-menu-btn { display: block; }
    .hero h1 { font-size: 3rem; }
    .section-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
    .material-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    
    .new-cookie-popup {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        padding: 1.5rem;
        max-height: 90vh;
        overflow-y: auto;
    }
}