/* ================================================================
   MNT — Metodika, Nazariya, Tajriba
   Asosiy stil fayli
   ================================================================ */

/* ---- CSS o'zgaruvchilar (muqovadagi ranglar) ---- */
:root {
  --mnt-blue-darkest: #0a2952;
  --mnt-blue-dark: #143a73;
  --mnt-blue: #1e4a8a;
  --mnt-blue-light: #2d5fa8;
  --mnt-blue-bright: #4a7fc8;

  --mnt-lime: #b5d334;
  --mnt-lime-dark: #9bb82a;
  --mnt-lime-light: #c9e056;

  --mnt-gold: #d4a93f;
  --mnt-gold-light: #e6c160;

  --mnt-cream: #faf7f0;
  --mnt-gray-50: #f8fafc;
  --mnt-gray-100: #f1f5f9;
  --mnt-gray-200: #e2e8f0;
  --mnt-gray-300: #cbd5e1;
  --mnt-gray-500: #64748b;
  --mnt-gray-700: #334155;
  --mnt-gray-900: #0f172a;

  --mnt-white: #ffffff;
  --mnt-success: #10b981;
  --mnt-warning: #f59e0b;
  --mnt-danger: #ef4444;

  --font-heading: 'Montserrat', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Lora', Georgia, serif;

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 3px rgba(10, 41, 82, 0.08);
  --shadow: 0 4px 16px rgba(10, 41, 82, 0.10);
  --shadow-lg: 0 12px 36px rgba(10, 41, 82, 0.14);

  --container: 1200px;
  --header-h: 88px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--mnt-gray-900);
  background: var(--mnt-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--mnt-blue); text-decoration: none; transition: color .2s; }
a:hover { color: var(--mnt-blue-light); }

button { font: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--mnt-blue-darkest);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p { margin-bottom: 1rem; }

/* ---- Container ---- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ================================================================
   HEADER — to'q ko'k navbar
   ================================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(135deg, var(--mnt-blue-darkest) 0%, var(--mnt-blue) 100%);
  border-bottom: 3px solid var(--mnt-lime);
  height: var(--header-h);
  box-shadow: var(--shadow);
}
.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: white;
  font-family: var(--font-heading);
}
.site-header__logo-mark {
  width: 48px; height: 48px;
  background: var(--mnt-lime);
  color: var(--mnt-blue-darkest);
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 1.1rem;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
}
.site-header__logo-text {
  display: flex; flex-direction: column; line-height: 1.1;
}
.site-header__logo-text strong {
  font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em;
}
.site-header__logo-text small {
  font-size: 0.7rem; opacity: 0.75; text-transform: uppercase; letter-spacing: 0.1em;
}

.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  color: rgba(255,255,255,0.85);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.93rem;
  transition: all .2s;
}
.site-nav a:hover { color: white; background: rgba(255,255,255,0.1); }
.site-nav a.is-active { color: var(--mnt-lime); }

.site-header__actions { display: flex; align-items: center; gap: 10px; }
.btn-mobile { display: none; color: white; padding: 8px; }

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all .2s;
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn--primary {
  background: var(--mnt-lime);
  color: var(--mnt-blue-darkest);
}
.btn--primary:hover {
  background: var(--mnt-lime-dark);
  color: var(--mnt-blue-darkest);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.btn--secondary {
  background: var(--mnt-blue);
  color: white;
}
.btn--secondary:hover { background: var(--mnt-blue-dark); color: white; }

.btn--outline {
  background: transparent;
  border-color: white;
  color: white;
}
.btn--outline:hover { background: white; color: var(--mnt-blue); }

.btn--ghost {
  background: transparent;
  color: var(--mnt-blue);
  border-color: var(--mnt-gray-200);
}
.btn--ghost:hover { background: var(--mnt-gray-50); }

.btn--sm { padding: 8px 16px; font-size: 0.85rem; }
.btn--lg { padding: 16px 32px; font-size: 1.05rem; }

/* ================================================================
   HERO — bosh sahifa kabi muqovaga o'xshash
   ================================================================ */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--mnt-blue-darkest) 0%, var(--mnt-blue) 50%, var(--mnt-blue-light) 100%);
  color: white;
  padding: 80px 0 120px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(45deg, transparent 49%, rgba(255,255,255,0.05) 49.5%, rgba(255,255,255,0.05) 50.5%, transparent 51%),
    linear-gradient(-45deg, transparent 49%, rgba(255,255,255,0.03) 49.5%, rgba(255,255,255,0.03) 50.5%, transparent 51%);
  background-size: 80px 80px, 120px 120px;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
  z-index: 1;
}
.hero__eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mnt-lime);
  margin-bottom: 20px;
  padding: 6px 14px;
  background: rgba(181, 211, 52, 0.12);
  border-radius: 100px;
  border: 1px solid rgba(181, 211, 52, 0.3);
}
.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  color: white;
  line-height: 1;
  margin-bottom: 24px;
}
.hero__title .accent { color: var(--mnt-lime); }
.hero__title-block {
  display: flex; flex-direction: column; gap: 6px;
}
.hero__title-block span:first-child { font-size: 0.65em; opacity: 0.85; font-weight: 600; }
.hero__title-letters {
  display: flex; flex-direction: column;
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 0.95;
}
.hero__title-letters span { display: block; }
.hero__title-letters .letter-accent {
  display: inline-block;
  color: var(--mnt-lime);
  margin-right: 8px;
}

.hero__subtitle {
  font-size: 1.25rem;
  opacity: 0.92;
  margin-bottom: 32px;
  max-width: 540px;
  line-height: 1.5;
}
.hero__cta { display: flex; gap: 12px; flex-wrap: wrap; }

.hero__cover {
  position: relative;
  display: flex; justify-content: center;
}
.hero__cover img {
  max-height: 480px;
  border-radius: var(--radius);
  box-shadow: 0 30px 60px rgba(0,0,0,0.3), 0 0 0 1px rgba(255,255,255,0.1);
  transform: perspective(800px) rotateY(-8deg);
  transition: transform .4s;
}
.hero__cover img:hover { transform: perspective(800px) rotateY(-4deg) translateY(-6px); }

/* ================================================================
   STATS BAR
   ================================================================ */
.stats-bar {
  background: white;
  margin-top: -60px;
  position: relative;
  z-index: 2;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat {
  text-align: center;
  padding: 12px;
  border-right: 1px solid var(--mnt-gray-200);
}
.stat:last-child { border-right: none; }
.stat__value {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--mnt-blue);
  line-height: 1;
  margin-bottom: 4px;
}
.stat__value .unit { color: var(--mnt-lime); }
.stat__label {
  font-size: 0.85rem;
  color: var(--mnt-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ================================================================
   SECTION
   ================================================================ */
.section { padding: 80px 0; }
.section--alt { background: var(--mnt-gray-50); }
.section__header {
  text-align: center;
  margin-bottom: 48px;
}
.section__eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mnt-lime-dark);
  margin-bottom: 12px;
}
.section__title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 12px;
}
.section__lead {
  font-size: 1.1rem;
  color: var(--mnt-gray-500);
  max-width: 700px;
  margin: 0 auto;
}

/* ================================================================
   CATEGORIES (M, N, T uchun maxsus kartochkalar)
   ================================================================ */
.categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.category-card {
  position: relative;
  padding: 32px 28px;
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--mnt-gray-200);
  overflow: hidden;
  transition: all .3s;
  text-decoration: none;
  color: var(--mnt-gray-900);
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--cat-color, var(--mnt-blue));
  transition: height .3s;
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  color: var(--mnt-gray-900);
}
.category-card:hover::before { height: 100%; opacity: 0.05; }
.category-card__letter {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 900;
  color: var(--cat-color, var(--mnt-blue));
  line-height: 1;
  margin-bottom: 16px;
}
.category-card__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--mnt-blue-darkest);
}
.category-card__desc {
  color: var(--mnt-gray-500);
  font-size: 0.95rem;
  line-height: 1.6;
}
.category-card__arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  color: var(--cat-color, var(--mnt-blue));
  font-weight: 600;
  font-size: 0.9rem;
}

/* ================================================================
   ISSUE / ARTICLE CARDS
   ================================================================ */
.issues-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.issue-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .3s;
  border: 1px solid var(--mnt-gray-200);
}
.issue-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.issue-card__cover {
  aspect-ratio: 3 / 4;
  background: linear-gradient(135deg, var(--mnt-blue-darkest), var(--mnt-blue));
  position: relative;
  overflow: hidden;
}
.issue-card__cover img { width: 100%; height: 100%; object-fit: cover; }
.issue-card__cover-placeholder {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: white; padding: 16px; text-align: center;
}
.issue-card__cover-placeholder strong { font-size: 2.5rem; color: var(--mnt-lime); }
.issue-card__body { padding: 20px; }
.issue-card__meta {
  font-size: 0.8rem;
  color: var(--mnt-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.issue-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--mnt-blue-darkest);
  margin-bottom: 12px;
  line-height: 1.3;
}
.issue-card__articles-count {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--mnt-gray-500);
}

.article-card {
  background: white;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--mnt-gray-200);
  transition: all .3s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.article-card:hover {
  border-color: var(--mnt-lime);
  box-shadow: var(--shadow);
}
.article-card__tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--mnt-gray-100);
  color: var(--mnt-blue);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 100px;
  letter-spacing: 0.03em;
  align-self: flex-start;
}
.article-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--mnt-blue-darkest);
  line-height: 1.4;
}
.article-card__title a { color: inherit; }
.article-card__title a:hover { color: var(--mnt-blue); }
.article-card__authors {
  font-size: 0.9rem;
  color: var(--mnt-gray-700);
  font-style: italic;
}
.article-card__excerpt {
  font-size: 0.92rem;
  color: var(--mnt-gray-500);
  line-height: 1.6;
}
.article-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--mnt-gray-200);
  font-size: 0.85rem;
  color: var(--mnt-gray-500);
}

/* ================================================================
   CTA — "Maqola yuborish" katta blok
   ================================================================ */
.cta-banner {
  background: linear-gradient(135deg, var(--mnt-blue-darkest) 0%, var(--mnt-blue) 100%);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  color: white;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  align-items: center;
}
.cta-banner::before {
  content: '';
  position: absolute;
  right: -100px; top: -100px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(181, 211, 52, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-banner h2 { color: white; margin-bottom: 12px; }
.cta-banner p { opacity: 0.9; font-size: 1.05rem; }
.cta-banner__actions { display: flex; flex-direction: column; gap: 12px; }

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer {
  background: var(--mnt-blue-darkest);
  color: rgba(255,255,255,0.85);
  padding: 60px 0 24px;
  margin-top: 80px;
}
.site-footer h4 {
  color: var(--mnt-lime);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 10px; }
.site-footer a { color: rgba(255,255,255,0.75); font-size: 0.93rem; }
.site-footer a:hover { color: var(--mnt-lime); }
.site-footer p { font-size: 0.93rem; opacity: 0.85; line-height: 1.7; }
.site-footer__bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.85rem;
  opacity: 0.7;
  text-align: center;
}

/* ================================================================
   FORMS
   ================================================================ */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--mnt-gray-700);
}
.form-label .req { color: var(--mnt-danger); }
.form-control {
  width: 100%;
  padding: 11px 14px;
  font-size: 0.95rem;
  font-family: inherit;
  background: white;
  border: 1.5px solid var(--mnt-gray-200);
  border-radius: var(--radius-sm);
  transition: all .15s;
}
.form-control:focus {
  outline: none;
  border-color: var(--mnt-blue);
  box-shadow: 0 0 0 3px rgba(30, 74, 138, 0.1);
}
textarea.form-control { min-height: 120px; resize: vertical; }
.form-help { font-size: 0.85rem; color: var(--mnt-gray-500); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ================================================================
   ALERTS
   ================================================================ */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  border-left: 4px solid;
  font-size: 0.95rem;
}
.alert--success { background: #f0fdf4; border-color: var(--mnt-success); color: #065f46; }
.alert--danger { background: #fef2f2; border-color: var(--mnt-danger); color: #991b1b; }
.alert--warning { background: #fffbeb; border-color: var(--mnt-warning); color: #92400e; }
.alert--info { background: #eff6ff; border-color: var(--mnt-blue); color: var(--mnt-blue-darkest); }

/* ================================================================
   BADGE
   ================================================================ */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.badge--draft { background: var(--mnt-gray-200); color: var(--mnt-gray-700); }
.badge--submitted { background: #dbeafe; color: var(--mnt-blue); }
.badge--review { background: #fef3c7; color: #92400e; }
.badge--accepted { background: #d1fae5; color: #065f46; }
.badge--rejected { background: #fee2e2; color: #991b1b; }
.badge--published { background: var(--mnt-lime); color: var(--mnt-blue-darkest); }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 968px) {
  .hero__inner { grid-template-columns: 1fr; text-align: center; }
  .hero__cover { order: -1; }
  .hero__cover img { max-height: 360px; transform: none; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat:nth-child(2) { border-right: none; }
  .categories { grid-template-columns: 1fr; }
  .cta-banner { grid-template-columns: 1fr; padding: 40px 24px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-nav { display: none; }
  .btn-mobile { display: flex; }
  .site-nav.is-open {
    display: flex;
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--mnt-blue-darkest);
    flex-direction: column;
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  .stats-bar { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 1px solid var(--mnt-gray-200); padding-bottom: 16px; }
  .stat:last-child { border-bottom: none; }
  .site-footer__grid { grid-template-columns: 1fr; }
  .section { padding: 48px 0; }
  .hero { padding: 48px 0 80px; }
}