/* ========================================
   THE PRELIM - Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
  /* Brand Colours */
  --color-black: #1a1a1a;
  --color-white: #fafafa;
  --color-cream: #f8f6f3;
  --color-grey-light: #e8e6e3;
  --color-grey-mid: #6b6b6b;
  --color-grey-dark: #3d3d3d;
  
  /* Journal Colours */
  --color-science: #336699;
  --color-social-sciences: #684D9E;
  --color-humanities: #C68E17;
  --color-arts: #3A6B4F;
  --color-literature: #8C1C13;
  
  /* Typography */
  --font-serif: 'Libre Baskerville', 'Baskerville', Georgia, serif;
  --font-sans: 'Karla', 'Helvetica Neue', Helvetica, sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  
  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
}

/* ========================================
   Reset & Base
   ======================================== */

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

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

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-black);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-black);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  margin-bottom: 1.5em;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.text-link {
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.1em;
}

.text-link:hover {
  opacity: 0.7;
}

/* ========================================
   Layout
   ======================================== */

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

.container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-xl) 0;
}

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

/* ========================================
   Header & Navigation
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--color-white);
  transition: all 0.3s ease;
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 120px;
  transition: height 0.3s ease;
}

/* Main logo - image version */
.logo {
  display: block;
  transition: all 0.3s ease;
}

.logo__image {
  height: 45px;
  width: auto;
  display: block;
}

/* Small caps subtitle - hidden at top, visible on scroll */
.logo__subtitle {
  display: none;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 400;
  font-variant: small-caps;
  letter-spacing: 0.1em;
  color: var(--color-black);
  text-align: center;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: all 0.3s ease;
}

/* Scrolled state - minimal header */
.header--scrolled .header__inner {
  height: 70px;
  justify-content: center;
}

.header--scrolled .logo {
  display: none;
}

.header--scrolled .logo__subtitle {
  display: block;
}

.header--scrolled .nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-white);
  justify-content: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-grey-light);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
}

.header--scrolled:hover .nav {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Colour-coded nav links in scrolled state */
.header--scrolled .nav__link:nth-child(1):hover { color: var(--color-humanities); }
.header--scrolled .nav__link:nth-child(2):hover { color: var(--color-science); }
.header--scrolled .nav__link:nth-child(3):hover { color: var(--color-social-sciences); }
.header--scrolled .nav__link:nth-child(4):hover { color: var(--color-literature); }
.header--scrolled .nav__link:nth-child(5):hover { color: var(--color-arts); }

.header--scrolled .nav-toggle {
  display: none;
}

/* Journals dropdown */
.nav__item--dropdown {
  position: relative;
}

.nav__item--dropdown > .nav__link {
  position: relative;
}

.nav__item--dropdown > .nav__link::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 5px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  vertical-align: middle;
  transition: transform 0.2s ease;
}

.nav__item--dropdown:hover > .nav__link::after {
  transform: rotate(180deg);
}

.nav__dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-white);
  border: 1px solid var(--color-grey-light);
  padding: var(--space-sm) 0;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  z-index: 200;
}

.nav__item--dropdown:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
}

.nav__dropdown-link {
  display: block;
  padding: 0.5rem var(--space-md);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-black);
  text-decoration: none;
  transition: background-color 0.2s ease;
  white-space: nowrap;
}

.nav__dropdown-link span {
  font-style: italic;
}

.nav__dropdown-link--humanities span { color: var(--color-humanities); }
.nav__dropdown-link--science span { color: var(--color-science); }
.nav__dropdown-link--social-sciences span { color: var(--color-social-sciences); }
.nav__dropdown-link--literature span { color: var(--color-literature); }
.nav__dropdown-link--arts span { color: var(--color-arts); }

.nav__dropdown-link--humanities:hover { background-color: rgba(198, 142, 23, 0.1); }
.nav__dropdown-link--science:hover { background-color: rgba(51, 102, 153, 0.1); }
.nav__dropdown-link--social-sciences:hover { background-color: rgba(104, 77, 158, 0.1); }
.nav__dropdown-link--literature:hover { background-color: rgba(140, 28, 19, 0.1); }
.nav__dropdown-link--arts:hover { background-color: rgba(58, 107, 79, 0.1); }

/* Accent rule - hide when scrolled */
.accent-rule {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.accent-rule--hidden {
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
}

.nav__link {
  font-size: 0.9375rem;
  color: var(--color-grey-dark);
  transition: color 0.2s ease;
}

.nav__link:hover {
  color: var(--color-black);
}

.nav__link--active {
  color: var(--color-black);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-black);
  margin: 5px 0;
  transition: 0.3s;
}

/* ========================================
   Accent Colour Elements
   ======================================== */

/* Five-colour rule - decorative element */
.accent-rule {
  display: flex;
  height: 4px;
  width: 100%;
}

.accent-rule__segment {
  flex: 1;
}

.accent-rule__segment--humanities { background-color: var(--color-humanities); }
.accent-rule__segment--science { background-color: var(--color-science); }
.accent-rule__segment--social-sciences { background-color: var(--color-social-sciences); }
.accent-rule__segment--literature { background-color: var(--color-literature); }
.accent-rule__segment--arts { background-color: var(--color-arts); }

/* Gold rule - single accent line */
.gold-rule {
  width: 60px;
  height: 2px;
  background-color: var(--color-humanities);
  margin: var(--space-md) 0;
}

.gold-rule--center {
  margin-left: auto;
  margin-right: auto;
}

/* Section with top accent border */
.section--accent-top {
  border-top: 4px solid var(--color-humanities);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-top: 130px; /* Account for fixed header + accent rule */
  background-color: var(--color-white);
}

.hero__content {
  max-width: 800px;
}

.hero__title {
  margin-bottom: var(--space-md);
}

.hero__subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-style: italic;
  color: var(--color-grey-mid);
  margin-bottom: var(--space-lg);
  max-width: 600px;
}

.hero__cta {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.875rem 1.75rem;
  border: 1px solid var(--color-black);
  background-color: transparent;
  color: var(--color-black);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn:hover {
  background-color: var(--color-black);
  color: var(--color-white);
}

.btn--filled {
  background-color: var(--color-black);
  color: var(--color-white);
}

.btn--filled:hover {
  background-color: var(--color-grey-dark);
  border-color: var(--color-grey-dark);
}

/* ========================================
   Journal Cards
   ======================================== */

.journals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.journal-card {
  display: block;
  padding: var(--space-lg) var(--space-md);
  background-color: var(--color-white);
  border: 1px solid var(--color-grey-light);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.journal-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--card-accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.3s ease;
}

.journal-card:hover {
  border-color: var(--card-accent);
}

.journal-card:hover::before {
  transform: scaleY(1);
}

.journal-card__name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1.1;
}

.journal-card__discipline {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--card-accent);
  margin-bottom: var(--space-sm);
  line-height: 1.1;
}

.journal-card__description {
  font-size: 0.9375rem;
  color: var(--color-grey-mid);
  line-height: 1.6;
}

/* Journal-specific accent colours */
.journal-card--science { --card-accent: var(--color-science); }
.journal-card--social-sciences { --card-accent: var(--color-social-sciences); }
.journal-card--humanities { --card-accent: var(--color-humanities); }
.journal-card--arts { --card-accent: var(--color-arts); }
.journal-card--literature { --card-accent: var(--color-literature); }

/* ========================================
   About / Info Sections
   ======================================== */

.info-section {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-lg);
  align-items: start;
}

.info-section__label {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-grey-mid);
}

.info-section__content h3 {
  margin-bottom: var(--space-sm);
}

/* ========================================
   Editorial Board
   ======================================== */

.board-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
}

.board-member {
  padding: var(--space-md);
  background-color: var(--color-cream);
}

.board-member__name {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.board-member__role {
  font-size: 0.875rem;
  color: var(--color-grey-mid);
  margin-bottom: var(--space-xs);
}

.board-member__affiliation {
  font-size: 0.875rem;
  font-style: italic;
  color: var(--color-grey-mid);
}

/* ========================================
   Footer
   ======================================== */

.footer {
  background-color: var(--color-black);
  color: var(--color-white);
  padding: var(--space-lg) 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
}

.footer__brand {
  margin-bottom: var(--space-sm);
}

.footer__logo {
  height: 65px;
  width: auto;
  display: block;
  margin-bottom: var(--space-sm);
}

.footer__tagline {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.6);
  max-width: 300px;
}

.footer__heading {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
  color: rgba(255, 255, 255, 0.6);
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--space-xs);
}

.footer__links a {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.2s ease;
}

.footer__links a:hover {
  color: var(--color-white);
}

.footer__bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ========================================
   Page Headers (for inner pages)
   ======================================== */

.page-header {
  padding-top: calc(120px + var(--space-xl));
  padding-bottom: var(--space-lg);
  background-color: var(--color-cream);
}

.page-header--journal {
  border-bottom: 4px solid var(--journal-color);
}

.page-header__title {
  margin-bottom: var(--space-sm);
}

.page-header__subtitle {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--color-grey-mid);
}

/* ========================================
   Forms
   ======================================== */

.form-embed {
  background-color: var(--color-cream);
  padding: var(--space-lg);
  margin: var(--space-md) 0;
}

.form-embed__placeholder {
  text-align: center;
  color: var(--color-grey-mid);
  font-style: italic;
}

/* ========================================
   Utility Classes
   ======================================== */

.text-center { text-align: center; }
.text-serif { font-family: var(--font-serif); }
.text-italic { font-style: italic; }
.text-muted { color: var(--color-grey-mid); }
.text-small { font-size: 0.875rem; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 900px) {
  .info-section {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
  
  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }
}

@media (max-width: 600px) {
  :root {
    --space-xl: 4rem;
    --space-lg: 2rem;
  }
  
  .nav {
    display: none;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .nav--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-grey-light);
  }
  
  .hero {
    min-height: auto;
    padding-top: calc(80px + var(--space-lg));
    padding-bottom: var(--space-lg);
  }
  
  .footer__inner {
    grid-template-columns: 1fr;
  }
}