/* =========================================================
   EQUALYRA — MODERN POLISH LAYER
   Dimuat terakhir di base.html sehingga menimpa style lama
   secara aman tanpa mengedit style.css secara massal.
   ========================================================= */

:root {
  --eq-blue: #041E4F;
  --eq-blue-2: #0A2E6E;
  --eq-teal: #2A8C7F;
  --eq-teal-bright: #14B8A6;
  --eq-green: #186B61;
  --eq-green-pale: #DCEDEA;
  --eq-blue-pale: #DDE5F0;
  --eq-ink: #101828;
  --eq-muted: #4A5568;
  --eq-radius: 14px;
  --eq-radius-sm: 9px;
  --eq-shadow-sm: 0 1px 2px rgba(4, 30, 79, .06), 0 4px 14px rgba(4, 30, 79, .07);
  --eq-shadow-md: 0 4px 10px rgba(4, 30, 79, .08), 0 14px 34px rgba(4, 30, 79, .12);
  --eq-ease: cubic-bezier(.22, 1, .36, 1);
}

/* ---------- GLOBAL TYPE RESET ---------- */

body {
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--eq-ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  color: var(--eq-ink);
  font-weight: 750;
  letter-spacing: -0.02em;
}

a {
  color: var(--eq-teal);
  text-decoration: none;
  transition: color .18s var(--eq-ease);
}

a:hover {
  color: var(--eq-green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 2.5px solid var(--eq-teal-bright);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: rgba(42, 140, 127, .22);
}

/* ---------- HERO ---------- */

.hero {
  padding: 72px 0 240px;
  background:
    linear-gradient(120deg,
      rgba(3, 16, 46, .88) 0%,
      rgba(6, 42, 96, .78) 48%,
      rgba(7, 34, 30, .82) 100%),
    url("../images/hero-matematika.jpg");
  background-size: cover;
  background-position: center;
  border-bottom: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 40%;
  background: linear-gradient(to top, rgba(4, 20, 40, .55), transparent);
  pointer-events: none;
}

.hero-grid {
  gap: 48px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #7FD8CD;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  background: rgba(42, 140, 127, 0);
  border: 1px solid rgba(127, 216, 205, .3);
  padding: 7px 14px;
  border-radius: 0px;
  backdrop-filter: blur(4px);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--eq-teal-bright);
  box-shadow: 0 0 8px rgba(20, 184, 166, .9);
}

.hero h1 {
  margin: 20px 0 16px;
  color: #fff;
  font-size: clamp(2.5rem, 5.6vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 800;
  text-transform: none;
  text-shadow: 0 2px 24px rgba(0, 0, 0, .45);
}

.hero h1 span {
  color: #3ECFBD;
  background: linear-gradient(120deg, #3ECFBD 0%, #7FD8CD 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-copy > p {
  color: rgba(232, 240, 250, .92);
  font-size: 17.5px;
  line-height: 1.7;
  max-width: 560px;
  text-shadow: 0 1px 10px rgba(0, 0, 0, .4);
}

/* ---------- BUTTONS ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border: none;
  border-radius: 0px;
  background: var(--eq-teal);
  color: #fff !important;
  font-family: inherit;
  font-size: .98rem;
  font-weight: 650;
  letter-spacing: .01em;
  text-decoration: none !important;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(24, 107, 97, .35);
  transition: transform .18s var(--eq-ease), box-shadow .18s var(--eq-ease),
              background .18s var(--eq-ease);
}

.btn:hover {
  background: var(--eq-teal-bright);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(20, 184, 166, .45);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(20, 184, 166, .4);
}

.btn-primary {
  background: linear-gradient(120deg, var(--eq-teal) 0%, #1FA396 100%);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, .1);
  color: #fff !important;
  border: 1.5px solid rgba(255, 255, 255, .4);
  backdrop-filter: blur(6px);
  box-shadow: none;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, .2);
  border-color: rgba(255, 255, 255, .7);
  color: #fff;
}

.hero-actions {
  gap: 14px;
  margin-top: 30px;
}

/* ---------- HERO CARD (terminal) ---------- */

.hero-card {
  min-height: 240px;
  padding: 24px;
  border: 1px solid rgba(127, 216, 205, .22);
  border-radius: 0px
  
}



.math-symbol {
  margin-top: 18px;
  font-size: 6rem;
  color: #3ECFBD;
  text-shadow: 0 0 30px rgba(62, 207, 189, .55);
}

.math-line {
  color: #9FD8CF;
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 1.1rem;
}

.math-line.small {
  color: rgba(255, 255, 255, .65);
  font-size: .8rem;
  letter-spacing: .22em;
}

/* ---------- HERO STATS ---------- */

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, .18);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-stat strong {
  color: #fff;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero-stat span {
  color: rgba(221, 229, 240, .75);
  font-size: .82rem;
}

/* ---------- MATH VISUAL LABEL ---------- */

.math-visual-label {
  right: 24px;
  color: #7FD8CD;
  opacity: .9;
}

/* ---------- SECTIONS & HEADING ---------- */

.section {
  padding: 64px 0;
}

.section-heading {
  align-items: flex-start;
  margin-bottom: 26px;
  gap: 16px;
}

.section-heading .eyebrow {
  color: var(--eq-green);
  background: var(--eq-green-pale);
  border-color: rgba(24, 107, 97, .25);
  padding: 5px 12px;
  font-size: 11.5px;
}

.section-heading .eyebrow::before {
  display: none;
}

.section-heading h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 10px 0 0;
  color: var(--eq-blue);
}

.back-link {
  color: var(--eq-teal);
  font-weight: 650;
  font-size: .95rem;
  padding: 8px 16px;
  border-radius: 0px;
  border: 1.5px solid rgba(42, 140, 127, .35);
  transition: all .18s var(--eq-ease);
  white-space: nowrap;
}

.back-link:hover {
  background: var(--eq-green-pale);
  border-color: var(--eq-teal);
  color: var(--eq-green);
  text-decoration: none;
}

/* ---------- POST CARDS ---------- */

.post-card {
  padding: 22px 22px 18px;
  background: #fff;
  border: 1px solid #E7ECF3;
  border-radius: var(--eq-radius);
  box-shadow: var(--eq-shadow-sm);
  transition: transform .22s var(--eq-ease), box-shadow .22s var(--eq-ease),
              border-color .22s var(--eq-ease);
}

.post-card:hover {
  background: #fff;
  border-color: rgba(42, 140, 127, .45);
  box-shadow: var(--eq-shadow-md);
  transform: translateY(-4px);
}

.post-card h3 {
  font-size: 1.12rem;
  line-height: 1.35;
  margin: 12px 0 8px;
}

.post-card h3 a {
  color: var(--eq-blue);
  background-image: linear-gradient(var(--eq-teal-bright), var(--eq-teal-bright));
  background-size: 0% 2px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size .25s var(--eq-ease), color .18s var(--eq-ease);
}

.post-card h3 a:hover {
  color: var(--eq-green);
  background-size: 100% 2px;
}

.post-card p {
  color: var(--eq-muted);
  font-size: .93rem;
}

.post-card-footer {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed #E3E9F1;
  color: var(--eq-muted);
  font-size: .85rem;
  align-items: center;
}

.post-card-footer a {
  color: var(--eq-teal);
  font-weight: 700;
  font-size: .87rem;
  transition: gap .18s var(--eq-ease);
}

.post-card-footer a:hover {
  color: var(--eq-green);
}

/* chips */

.tag,
.level {
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 0px;
  border: none;
}

.tag {
  background: linear-gradient(120deg, var(--eq-green), var(--eq-teal));
  color: #fff;
}

.level {
  background: var(--eq-blue-pale);
  color: var(--eq-blue);
}

.olimpiade-card .tag {
  background: linear-gradient(120deg, var(--eq-blue), var(--eq-blue-2));
}

.utbk-card .tag {
  background: linear-gradient(120deg, #46586A, #63727D);
}

/* ---------- LEARNING CARDS ---------- */

.learning-card {
  padding: 22px 22px 18px 26px;
  min-height: 260px;
  border: 1px solid #E7ECF3;
  border-radius: var(--eq-radius);
  background: #fff;
  box-shadow: var(--eq-shadow-sm);
  transition: transform .22s var(--eq-ease), box-shadow .22s var(--eq-ease),
              border-color .22s var(--eq-ease);
}

.learning-card::before {
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(to bottom, var(--eq-teal), var(--eq-blue));
  opacity: 0;
  transition: opacity .22s var(--eq-ease);
}

.learning-card:hover {
  transform: translateY(-4px);
  border-color: rgba(42, 140, 127, .45);
  box-shadow: var(--eq-shadow-md);
}

.learning-card:hover::before {
  opacity: 1;
}

.learning-card-content {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.learning-card h3 {
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}

.learning-card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
}

.learning-card-links a {
  font-size: .82rem;
  font-weight: 650;
  color: var(--eq-blue);
  background: var(--eq-blue-pale);
  padding: 6px 12px;
  border-radius: 0px;
  transition: all .18s var(--eq-ease);
}

.learning-card-links a:hover {
  background: var(--eq-green-pale);
  color: var(--eq-green);
  text-decoration: none;
  transform: translateY(-1px);
}

/* ---------- LATEST SECTION ---------- */

.latest-featured {
  border-radius: var(--eq-radius);
  overflow: hidden;
  border: 1px solid #E7ECF3;
  box-shadow: var(--eq-shadow-sm);
  transition: transform .22s var(--eq-ease), box-shadow .22s var(--eq-ease);
}

.latest-featured:hover {
  transform: translateY(-4px);
  box-shadow: var(--eq-shadow-md);
}

.latest-list .post-card {
  border: none;
  border-bottom: 1px solid #EDF1F6;
  border-radius: 0;
  box-shadow: none;
  padding: 18px 8px 16px 18px;
}

.latest-list .post-card:hover {
  transform: none;
  box-shadow: none;
  background: rgba(42, 140, 127, .05);
}

.latest-list .post-card h3 a:hover {
  background-size: 0% 2px;
}

/* ---------- REVEAL ON SCROLL ---------- */

@media (prefers-reduced-motion: no-preference) {
  /* Hanya sembunyikan kartu bila JS aktif (class .js dipasang main.js).
     Tanpa JS, semua kartu tetap terlihat. */
  .js .section .post-card,
  .js .section .learning-card {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .55s var(--eq-ease), transform .55s var(--eq-ease),
                box-shadow .22s var(--eq-ease), border-color .22s var(--eq-ease);
  }

  .js .section .post-card.eq-in,
  .js .section .learning-card.eq-in {
    opacity: 1;
    transform: none;
  }

  .js .section .post-card.eq-in:hover,
  .js .section .learning-card.eq-in:hover {
    transform: translateY(-4px);
  }
}

/* ---------- HEADER ---------- */

.top-bar-full {
  background: var(--eq-blue);
}

.top-bar-menu a {
  color: rgba(255, 255, 255, .82);
  font-size: .84rem;
  font-weight: 600;
  padding: 6px 2px;
  transition: color .18s var(--eq-ease);
}

.top-bar-menu a:hover,
.top-bar-menu a[aria-current="page"] {
  color: #7FD8CD;
  text-decoration: none;
}

/* ---------- HEADER / BRAND ---------- */

.brand-name {
    overflow: visible;
    flex-shrink: 0;
}

.brand {
    overflow: visible;
    flex-shrink: 0;
}

.nav-wrapper {
    gap: 16px;
}

.main-nav {
    min-width: 0;
}

/* ---------- COOKIE BANNER ---------- */

.cookie-consent {
  border: 1px solid #E7ECF3;
  border-radius: var(--eq-radius);
  box-shadow: 0 10px 40px rgba(4, 30, 79, .18);
  backdrop-filter: blur(10px);
  padding: 1.1rem 1.25rem;
  font-size: .9rem;
}

/* ---------- FOOTER ---------- */

.site-footer {
  background: linear-gradient(160deg, #061B3F 0%, #04122E 100%);
  color: #E8EEF7;
}

/* Logo footer: tanpa filter apapun agar tajam dan jelas */
.footer-logo {
  filter: none !important;
  image-rendering: auto;
  width: 150px;
  height: auto;
}

/* Deskripsi tagline */
.footer-description {
  font-family: "Segoe UI", system-ui, sans-serif;
  color: #B8C6DC;
  font-weight: 650;
  font-size: 14.5px;
  letter-spacing: .04em;
  line-height: 1.6;
  filter: none !important;
}

/* Judul "Ikuti Equalyra" */
.footer-social-title {
  color: #7FD8CD;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  filter: none !important;
}

/* Link sosial media */
.footer-social-links a {
  color: #E8EEF7;
  font-size: .9rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 0px;
  padding: 7px 12px;
  transition: all .18s var(--eq-ease);
}

.footer-social-icon {
  fill: #7FD8CD !important;
}

.footer-social-links a:hover,
.footer-social-links a:focus-visible {
  background: rgba(42, 140, 127, .25);
  border-color: var(--eq-teal-bright);
  color: #fff;
}

/* Link navigasi footer */
.footer-links a {
  color: #C9D6EA;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: .95rem;
  font-weight: 600;
  filter: none !important;
  transition: color .18s var(--eq-ease);
}

.footer-links a:hover {
  color: #7FD8CD;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-links a[aria-current="page"] {
  color: #7FD8CD;
}

/* Copyright */
.footer-copyright {
  color: #8FA3C2;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: .88rem;
  filter: none !important;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}

.site-footer a {
  color: inherit;
}

.site-footer a:hover {
  color: #7FD8CD;
}

/* ---------- RESPONSIVE ---------- */

@media (max-width: 900px) {
  .hero {
    padding: 52px 0 200px;
  }

  .hero-stats {
    gap: 18px;
  }

  .hero-stat strong {
    font-size: 1.05rem;
  }
}

@media (max-width: 560px) {
  .hero {
    padding: 44px 0 160px;
  }

  .hero h1 {
    font-size: clamp(2rem, 9vw, 2.6rem);
  }

  .hero-card {
    min-height: 0;
    padding: 16px;
    margin-top: 8px;
  }

  .math-symbol {
    font-size: 4rem;
    margin-top: 10px;
  }

  .hero-stats {
    margin-top: 22px;
    gap: 14px;
  }

  .hero-stat {
    min-width: 96px;
  }

  .hero-stat span {
    font-size: .74rem;
  }

  .btn {
    padding: 12px 20px;
    font-size: .92rem;
  }

  .section {
    padding: 44px 0;
  }

  .back-link {
    padding: 6px 12px;
    font-size: .85rem;
  }
}