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

:root {
  --color-primary: #0A1128; /* Deep navy blue */
  --color-accent: #6497B1; /* Soft institutional blue */
  --color-background: #F5F5F5;
  --color-text: #333333;
  --color-text-light: #F5F5F5;
  --color-text-muted: #6c757d;
  --color-border: #e0e0e0;
  --font-family-base: 'Lato', 'Open Sans', sans-serif;
  --font-family-heading: 'Montserrat', sans-serif;
  --spacing-xs: 4px;
  --spacing-s: 8px;
  --spacing-m: 16px;
  --spacing-l: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 64px;
  --spacing-xxxl: 128px;
  --border-radius: 8px;
  --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.1);
  --transition-speed: 0.3s ease-in-out;
}

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

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 6vw, 5.5rem); }
h2 { font-size: clamp(2rem, 5vw, 3rem); }
h3 { font-size: clamp(1.5rem, 4vw, 2rem); }
p { margin-bottom: var(--spacing-m); max-width: 75ch; }
a { color: var(--color-accent); text-decoration: none; transition: var(--transition-speed); }
a:hover, a:focus { color: var(--color-primary); text-decoration: underline; }

/* --- Layout & Containers --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--spacing-xl);
}

.section {
  padding: var(--spacing-xxl) 0;
}

@media (min-width: 1024px) {
  .section {
    padding: var(--spacing-xxxl) 0;
  }
}

/* --- Header & Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  padding: var(--spacing-m) 0;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-speed);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-family-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}
.logo:hover {
  text-decoration: none;
  color: var(--color-accent);
}

.nav-links {
  display: none;
  list-style: none;
  gap: var(--spacing-l);
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  font-family: var(--font-family-base);
  font-weight: 600;
  color: var(--color-text);
  padding: var(--spacing-s) 0;
  text-decoration: none;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: var(--transition-speed);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-links a.active {
    color: var(--color-primary);
}

.mobile-menu-toggle {
  display: block;
  cursor: pointer;
  background: none;
  border: none;
  padding: var(--spacing-s);
  z-index: 1001;
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.mobile-menu-toggle .icon-bar {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-primary);
  margin: 5px 0;
  transition: var(--transition-speed);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav .nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  text-align: center;
}

.mobile-nav .nav-links a {
  color: var(--color-text-light);
  font-size: 1.8rem;
}

.mobile-nav .nav-links a:hover,
.mobile-nav .nav-links a.active {
    color: var(--color-accent);
}
.mobile-nav .nav-links a::after {
    display: none;
}

/* Open state for hamburger */
.mobile-menu-toggle.open .icon-bar:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}
.mobile-menu-toggle.open .icon-bar:nth-child(2) {
  opacity: 0;
}
.mobile-menu-toggle.open .icon-bar:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* --- Hero Section (Editorial Style) --- */
.hero-editorial {
  min-height: 80vh;
  display: grid;
  align-content: center;
}

.hero-editorial .container {
  position: relative;
}

.hero-editorial h1 {
  max-width: 20ch;
  margin-bottom: var(--spacing-l);
  color: var(--color-primary);
}

.hero-editorial .subtitle {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  max-width: 65ch;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.hero-bg-image {
  position: absolute;
  bottom: -50px;
  right: 0;
  width: 200px;
  height: 300px;
  object-fit: cover;
  opacity: 0.1;
  z-index: -1;
  filter: grayscale(100%);
}

@media (min-width: 768px) {
  .hero-editorial {
    min-height: 70vh;
  }
  .hero-bg-image {
    width: 300px;
    height: 450px;
  }
}
@media (min-width: 1024px) {
    .hero-bg-image {
        opacity: 0.15;
    }
}

/* Common Hero for inner pages */
.page-hero {
  padding: var(--spacing-xxl) 0;
  background-color: var(--color-primary);
  color: var(--color-text-light);
  text-align: center;
}
.page-hero h1 {
  color: var(--color-text-light);
}
.page-hero p {
  color: var(--color-accent);
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.1rem;
}

/* --- Section Styles: Home Page --- */
.intro-section {
  padding: var(--spacing-xxl) 0;
  background-color: #fff;
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}
.intro-card {
    border-left: 3px solid var(--color-accent);
    padding: var(--spacing-l);
}
.intro-card h3 {
    margin-bottom: var(--spacing-m);
}
.intro-card p {
    color: var(--color-text-muted);
}
.intro-card i {
    font-size: 2rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-m);
}

.preview-section {
    background-color: var(--color-background);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}
.section-title h2 {
    margin-bottom: var(--spacing-m);
}
.section-title p {
    max-width: 60ch;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-text-muted);
}

.preview-grid {
    display: grid;
    gap: var(--spacing-xl);
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.preview-card {
    background-color: #fff;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
}
.preview-card h3 {
    margin-bottom: var(--spacing-m);
}
.preview-card p{
    flex-grow: 1;
}
.preview-card .card-link {
    margin-top: var(--spacing-l);
    font-weight: 700;
}

.about-summary-section {
  background-color: #fff;
}

.about-summary-grid {
  display: grid;
  gap: var(--spacing-xxl);
  align-items: center;
}
@media (min-width: 768px) {
  .about-summary-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about-summary-image img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

/* --- Content Pages (About, Articles) --- */
.content-section {
    padding: var(--spacing-xxl) 0;
}
.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}
.content-wrapper h2, .content-wrapper h3 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-m);
}
.content-wrapper ul {
    list-style-position: inside;
    margin-bottom: var(--spacing-m);
    padding-left: var(--spacing-m);
}
.content-wrapper li {
    margin-bottom: var(--spacing-s);
}
.blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--spacing-l);
    margin: var(--spacing-l) 0;
    font-style: italic;
    color: var(--color-text-muted);
}

.value-list {
    list-style: none;
    padding: 0;
}
.value-list li {
    padding-left: var(--spacing-xl);
    position: relative;
}
.value-list li::before {
    content: '✓';
    color: var(--color-accent);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.article-list {
    display: grid;
    gap: var(--spacing-xl);
}
.article-list-item {
    background: #fff;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-border);
}
.article-list-item h3 a {
    text-decoration: none;
    color: var(--color-primary);
}
.article-list-item h3 a:hover {
    color: var(--color-accent);
}
.article-list-item p {
    color: var(--color-text-muted);
}
.article-list-item .read-more {
    font-weight: bold;
    display: inline-block;
    margin-top: var(--spacing-m);
}

.structural-diagram {
    width: 100%;
    border: 1px solid var(--color-border);
    padding: var(--spacing-xl);
    background: #fff;
    margin: var(--spacing-l) 0;
    text-align: center;
}
.structural-diagram img {
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}


/* --- Contact Page --- */
.contact-section {
    padding: var(--spacing-xxl) 0;
}
.contact-grid {
    display: grid;
    gap: var(--spacing-xxl);
}
@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr 1.5fr;
    }
}
.contact-info h2 {
    margin-bottom: var(--spacing-l);
}
.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-l);
}
.contact-item i {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-right: var(--spacing-m);
    margin-top: 5px;
    width: 24px;
    text-align: center;
}
.contact-item-content h4 {
    margin-bottom: var(--spacing-s);
}
.contact-item-content p, .contact-item-content a {
    margin: 0;
    color: var(--color-text-muted);
    text-decoration: none;
}
.contact-item-content a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.contact-form h2 {
    margin-bottom: var(--spacing-l);
}
.contact-form form {
    display: grid;
    gap: var(--spacing-l);
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group label {
    margin-bottom: var(--spacing-s);
    font-weight: 600;
}
.form-group input,
.form-group textarea {
    padding: var(--spacing-m);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-family-base);
    font-size: 1rem;
    transition: var(--transition-speed);
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(100, 151, 177, 0.2);
}
textarea {
    min-height: 150px;
    resize: vertical;
}

.btn-submit {
    padding: calc(var(--spacing-m) + 2px) var(--spacing-xl);
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-speed);
    justify-self: start;
}
.btn-submit:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
}

.map-container {
  width: 100%;
  height: 450px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  margin-top: var(--spacing-xxl);
}
.map-container iframe { width: 100%; height: 100%; border: none; }

@media (max-width: 768px) {
  .map-container { height: 350px; }
}

/* --- Thank You Page --- */
.thank-you-section {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 20px;
}
.thank-you-icon {
  width: 80px;
  height: 80px;
  background: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 30px;
}
.thank-you-icon svg {
  width: 40px;
  height: 40px;
  color: white;
}
.thank-you-section h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 20px;
}
.thank-you-section p {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin-bottom: 30px;
}
.btn-home {
    display: inline-block;
    padding: var(--spacing-m) var(--spacing-xl);
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition-speed);
}
.btn-home:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
    text-decoration: none;
}


/* --- Footer --- */
.site-footer {
  background-color: var(--color-primary);
  color: var(--color-text-light);
  padding: var(--spacing-l) 0;
  font-size: 0.9rem;
}
.footer-container {
    text-align: center;
    line-height: 1.6;
}
.footer-links {
    list-style: none;
    padding: 0;
    margin: var(--spacing-m) 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-m);
}
.footer-links a {
    color: var(--color-accent);
    text-decoration: none;
}
.footer-links a:hover {
    color: #fff;
    text-decoration: underline;
}
.footer-contact p, .footer-copyright {
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
}
.footer-contact span{
    margin: 0 var(--spacing-s);
}

/* --- Cookie Banner --- */
#cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(10, 17, 40, 0.9);
  backdrop-filter: blur(5px);
  color: var(--color-text-light);
  padding: var(--spacing-l);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-l);
  flex-wrap: wrap;
}
#cookie-banner p {
  flex-grow: 1;
  margin: 0;
}
.cookie-buttons {
  display: flex;
  gap: var(--spacing-m);
  flex-shrink: 0;
}
.cookie-btn {
  padding: var(--spacing-s) var(--spacing-l);
  border: none;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  border-radius: 5px;
  transition: var(--transition-speed);
}
#cookie-accept {
  background: var(--color-accent);
  color: var(--color-primary);
}
#cookie-accept:hover {
  background: #fff;
}
#cookie-decline {
  background: transparent;
  color: var(--color-text-light);
  border: 1px solid var(--color-accent);
}
#cookie-decline:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}

/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--color-accent);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1.5rem;
    z-index: 999;
    transition: opacity 0.3s, transform 0.3s;
    opacity: 0;
}
.scroll-to-top.visible {
    display: flex;
    opacity: 1;
}