/* ===== MUXIMIZE-2026 — Responsive design system ===== */
:root {
  --color-primary: #1565c0;
  --color-primary-dark: #0d47a1;
  --color-accent: #ffab00;
  --color-surface: #f5f5f5;
  --color-card: #ffffff;
  --color-text: #212121;
  --color-text-muted: #616161;
  --color-footer: #263238;
  --color-footer-dark: #1a252a;
  --font-main: "Roboto Condensed", sans-serif;
  --max-width: 1200px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
}

* { box-sizing: border-box; }

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

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  margin: 0;
  overflow-x: hidden;
}

/* ----- Layout & container ----- */
.site-wrap { min-height: 100vh; display: flex; flex-direction: column; }
.main-content { flex: 1; }

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

@media (min-width: 768px) {
  .container { padding-left: var(--space-lg); padding-right: var(--space-lg); }
}

/* ----- Header & nav ----- */
.main-header {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  background-color: var(--color-primary);
  color: #fff;
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 280px;
}

@media (min-width: 768px) {
  .main-header { min-height: 340px; }
}

@media (min-width: 992px) {
  .main-header { min-height: 380px; }
}

/* Nav bar: fixed height, tidak menabrak judul */
.main-header nav {
  flex-shrink: 0;
  background: rgba(0,0,0,0.2) !important;
  padding: 0.6rem 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.main-header nav .container { width: 100%; }

.nav-wrapper {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-height: 48px;
}

.brand-logo {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff !important;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 70%;
}

@media (min-width: 576px) {
  .brand-logo { font-size: 1.05rem; max-width: none; }
}

@media (min-width: 992px) {
  .brand-logo { font-size: 1.25rem; }
}

.main-header .nav-wrapper ul.right {
  display: none;
}

@media (min-width: 992px) {
  .nav-wrapper {
    justify-content: flex-start;
  }
  .main-header .nav-wrapper ul.right {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    list-style: none;
    margin: 0 0 0 auto;
    padding: 0;
  }
  .main-header .nav-wrapper ul.right li { list-style: none; }
  .main-header .nav-wrapper ul.right a {
    color: rgba(255,255,255,0.95);
    text-decoration: none;
    padding: 0.2rem 0.35rem;
    border-radius: 4px;
    font-size: 0.85rem;
    line-height: 1.3;
    display: inline-block;
  }
  .main-header .nav-wrapper ul.right a:hover,
  .main-header .nav-wrapper ul.right a.active-link {
    background: rgba(255,255,255,0.2);
    color: #fff;
  }
  .main-header .nav-wrapper ul.right a.active-link {
    color: var(--color-accent);
    font-weight: 700;
  }
}

.main-header .button-collapse {
  display: block;
  color: #fff;
  padding: 0.5rem;
  cursor: pointer;
  font-size: 1.5rem;
  flex-shrink: 0;
}

@media (min-width: 992px) {
  .main-header .button-collapse { display: none; }
}

/* Side nav mobile */
.side-nav {
  padding: var(--space-md) !important;
}
.side-nav a { color: #fff !important; }
.side-nav .btn { margin-top: var(--space-sm); }

/* Showcase hero — jarak jelas di bawah nav, responsive */
.showcase {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg) var(--space-md) var(--space-xl);
  text-align: center;
  background: rgba(0,0,0,0.15);
  min-height: 200px;
}

.showcase .container { width: 100%; }
.showcase .row { margin: 0; }
.showcase .col { padding: 0 var(--space-xs); }

.showcase h5 {
  font-size: 0.9rem;
  margin: 0 0 var(--space-xs);
  opacity: 0.95;
  color: rgba(255,255,255,0.95);
}

.showcase h2 {
  font-size: 1.15rem;
  line-height: 1.35;
  margin: 0 0 var(--space-sm);
  font-weight: 700;
  color: #fff;
  word-wrap: break-word;
  hyphens: auto;
}

.showcase p { margin: 0; font-size: 0.9rem; opacity: 0.9; color: rgba(255,255,255,0.95); }

@media (min-width: 576px) {
  .showcase { padding: var(--space-xl) var(--space-md); min-height: 220px; }
  .showcase h2 { font-size: 1.4rem; }
  .showcase h5 { font-size: 1rem; }
  .showcase p { font-size: 0.95rem; }
}

@media (min-width: 768px) {
  .showcase { padding: 2.5rem var(--space-lg) var(--space-xl); min-height: 260px; }
  .showcase h2 { font-size: 1.65rem; }
  .showcase h5 { font-size: 1.05rem; }
}

@media (min-width: 992px) {
  .showcase { padding: 3rem var(--space-lg); min-height: 280px; }
  .showcase h2 { font-size: 1.85rem; }
}

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

.section-icons .row { display: flex; flex-wrap: wrap; gap: var(--space-md); }
.section-icons .row .col { flex: 1 1 100%; min-width: 0; }

@media (min-width: 768px) {
  .section-icons .row .col.s12.m4 { flex: 1 1 calc(33.333% - var(--space-md)); }
  .section-icons .row .col.s12.m12 { flex: 1 1 100%; }
}

.section-icons .card-panel {
  border-radius: var(--radius);
  padding: var(--space-lg) !important;
  height: 100%;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.section-icons .card-panel:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.section-icons .card-panel i { display: block; margin-bottom: var(--space-sm); color: var(--color-accent); }
.section-icons .card-panel h5 { margin: 0 0 var(--space-xs); font-size: 1.1rem; }
.section-icons .card-panel a { color: var(--color-accent) !important; text-decoration: none; font-weight: 600; }

.section-scope,
.section-toi { background: var(--color-surface) !important; }

.section-scope .card,
.section-toi .card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: none;
}

.section-scope .card-content,
.section-toi .card-content { padding: var(--space-lg) !important; }

.section-scope img.responsive-img {
  width: 100%;
  height: auto;
  max-height: 280px;
  object-fit: cover;
}

@media (min-width: 768px) {
  .section-scope .row .col.s12.m6:last-child { display: flex; align-items: center; }
}

/* Banner strip */
.banner-strip {
  padding: var(--space-md);
  text-align: center;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  background: linear-gradient(90deg, #e65100 0%, #ff8f00 50%, #bf360c 100%);
}

@media (min-width: 768px) {
  .banner-strip { font-size: 1.1rem; padding: var(--space-lg); }
}

/* Section paper submission */
.section-paper-submission {
  background: linear-gradient(135deg, #37474f 0%, #455a64 100%) !important;
  color: #fff;
}
.section-paper-submission .card { background: transparent !important; box-shadow: none !important; }
.section-paper-submission .card-content { color: rgba(255,255,255,0.95) !important; }
.section-paper-submission a { color: var(--color-accent) !important; }

/* Section extended papers & dates */
.section-extended-papers .card { border-radius: var(--radius); box-shadow: var(--shadow); }
.section-extended-papers .card-content { padding: var(--space-md) !important; }
.section-extended-papers .row .col.s12.m6 { margin-bottom: var(--space-md); }
.section-extended-papers .row .col.s12.m4 { margin-bottom: var(--space-sm); }

@media (min-width: 768px) {
  .section-extended-papers .row .col.s12.m4 { flex: 0 0 33.333%; max-width: 33.333%; }
}

.section-proceedings {
  background: var(--color-footer) !important;
  color: #fff;
}
.section-proceedings h4 { margin-top: 0; }
.section-proceedings p { margin: 0.5rem 0; opacity: 0.95; }

/* Speakers grid */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-lg);
  justify-items: center;
  text-align: center;
}

.speakers-grid .speaker-card img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
}

@media (min-width: 576px) {
  .speakers-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .speakers-grid .speaker-card img { width: 100px; height: 100px; }
}

.speakers-grid .speaker-card p {
  margin: var(--space-xs) 0 0;
  font-size: 0.85rem;
  color: var(--color-text);
}
.speakers-grid .speaker-card b { display: block; font-size: 0.9rem; }

/* Sponsors */
.section-sponsors .circle img {
  max-width: 120px;
  height: auto;
  border-radius: 50%;
}

/* ----- Footer ----- */
.page-footer {
  background: var(--color-footer) !important;
  color: rgba(255,255,255,0.9);
  padding: var(--space-xl) 0 var(--space-md) !important;
  margin-top: auto;
}

.page-footer h5 { color: #fff !important; margin: 0 0 var(--space-xs); font-size: 1rem; }
.page-footer a { color: var(--color-accent) !important; text-decoration: none; }
.page-footer a:hover { text-decoration: underline; }

.footer-copyright {
  background: var(--color-footer-dark) !important;
  padding: var(--space-sm) var(--space-md) !important;
  text-align: center;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
}

/* ----- Utility & overrides ----- */
.active-link { color: var(--color-accent) !important; font-weight: 700; }
.toi-content { line-height: 1.8; }
.toi-content li { margin-bottom: 0.25rem; }

/* Contact page */
.contact-card .card-panel { border-radius: var(--radius); padding: var(--space-xl) !important; }
.contact-card .card-panel p { margin: 0; font-size: 1.05rem; }

/* Committee list */
.committee-list { list-style: none; padding: 0; margin: 0; }
.committee-list li {
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  font-size: 0.95rem;
}
.committee-list li:last-child { border-bottom: none; }

/* Papers content */
.papers-content .card-panel { padding: var(--space-lg) !important; border-radius: var(--radius); }
.papers-content h6 { margin: var(--space-md) 0 var(--space-xs); font-size: 1rem; }
.papers-content h6:first-child { margin-top: 0; }
.papers-content p { margin-bottom: var(--space-sm); }

/* Hide Materialize's default .hide-on-med-and-down on small when we use custom nav */
@media (max-width: 991px) {
  .hide-on-med-and-down { display: none !important; }
}

/* Responsive images */
img.responsive-img { max-width: 100%; height: auto; display: block; }