:root {
  
  --primary-50: #eef4fb;
  --primary-100: #d9e6f6;
  --primary-200: #b3cdec;
  --primary-500: #1f5fa8;
  --primary-600: #1a4f8c;
  --primary-700: #143c6b;

  
  --secondary-500: #2f9e83;
  --secondary-600: #257e68;

  
  --accent-500: #d98a2b;

  
  --success-50: #eaf7ee;
  --success-500: #2f9e44;
  --success-700: #216b30;

  --warning-50: #fdf3e3;
  --warning-500: #d99a1b;

  --error-50: #fbebe9;
  --error-500: #d1453b;
  --error-700: #a3352c;

  
  --neutral-0: #ffffff;
  --neutral-50: #f7f8fa;
  --neutral-100: #eef0f3;
  --neutral-200: #e2e5ea;
  --neutral-400: #9aa1ac;
  --neutral-600: #6b7280;
  --neutral-800: #333944;
  --neutral-900: #1f2430;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(31, 36, 48, 0.08);
  --shadow-md: 0 4px 16px rgba(31, 36, 48, 0.1);

  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Vazirmatn", Tahoma, sans-serif;
  background: var(--neutral-50);
  color: var(--neutral-900);
  direction: rtl;
  line-height: 1.75;
  font-size: 16px;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  margin: 0 0 var(--space-2) 0;
  font-weight: 700;
}

p {
  margin: 0 0 var(--space-2) 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}



.site-header {
  background: var(--neutral-0);
  border-bottom: 1px solid var(--neutral-200);
  position: sticky;
  top: 0;
  z-index: 50;
}


.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
  flex-wrap: wrap;
}

.site-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-700);
}

.site-logo span {
  color: var(--secondary-500);
}

.main-nav {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--neutral-800);
  font-weight: 500;
  padding: 6px 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary-600);
  border-bottom-color: var(--primary-500);
}



.site-footer {
  margin-top: var(--space-6);
  background: var(--neutral-900);
  color: var(--neutral-200);
  padding: var(--space-4) 0;
}

.site-footer .container {
  text-align: center;
  font-size: 14px;
}

.site-footer .copyright {
  margin-top: 8px;
  opacity: 0.7;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
  font-weight: 600;
  direction: ltr;
  display: inline-block;
}

.site-footer a:hover {
  text-decoration: underline;
}



.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-md);
  padding: 13px 28px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.btn-primary {
  background: var(--primary-500);
  color: var(--neutral-0);
}

.btn-primary:hover {
  background: var(--primary-600);
  box-shadow: var(--shadow-sm);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-secondary {
  background: var(--neutral-0);
  color: var(--primary-600);
  border: 1px solid var(--primary-200);
}

.btn-secondary:hover {
  background: var(--primary-50);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}



.banner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin: var(--space-3) auto 0;
  max-width: var(--max-width);
  height: 400px;
  box-shadow: var(--shadow-md);
}

.banner-track {
  display: flex;
  height: 100%;
  direction: rtl  ;
  transition: transform 0.6s ease;
}

.banner-slide {
  flex: 0 0 100%;
  height: 100%;
  position: relative;
  background-color: var(--primary-600);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
}


.banner-slide:nth-child(1) { background-color: var(--primary-600); }
.banner-slide:nth-child(2) { background-color: var(--secondary-600); }
.banner-slide:nth-child(3) { background-color: var(--primary-700); }



.banner-slide-content {
  position: relative;
  z-index: 1;
  padding: var(--space-4);
  color: var(--neutral-0);
  max-width: 560px;
  direction: rtl;
  text-align: right;
}

.banner-slide-content h2 {
  font-size: 26px;
  margin-bottom: var(--space-1);
}

.banner-slide-content p {
  font-size: 15px;
  color: var(--neutral-100);
  margin-bottom: 0;
}

.banner-dots {
  position: absolute;
  bottom: 14px;
  right: 50%;
  transform: translateX(50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.banner-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background-color 0.15s ease;
}

.banner-dot.active {
  background: var(--neutral-0);
}



.main-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin: var(--space-4) auto;
  max-width: var(--max-width);
  padding: 0 var(--space-3);
}

.main-card {
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
  transition: box-shadow 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}

.main-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-200);
  transform: translateY(-2px);
}

.main-card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-2);
  border-radius: 50%;
  background: var(--primary-50);
  color: var(--primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}

.main-card h3 {
  font-size: 20px;
  color: var(--neutral-900);
}

.main-card p {
  color: var(--neutral-600);
  font-size: 14.5px;
}

@media (max-width: 720px) {
  .main-cards {
    grid-template-columns: 1fr;
  }

  .banner {
    height: 200px;
  }

  .banner-slide-content h2 {
    font-size: 20px;
  }
}



.page-title-block {
  text-align: center;
  padding: var(--space-5) 0 var(--space-2);
}

.page-title-block h1 {
  color: var(--primary-700);
  font-size: 28px;
}

.page-title-block p {
  color: var(--neutral-600);
  font-size: 15px;
}

.form-wrapper {
  max-width: 640px;
  margin: 0 auto var(--space-6);
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

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

.form-group {
  margin-bottom: var(--space-2);
}

.form-group label {
  display: block;
  font-size: 14.5px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--neutral-800);
}

.form-group label .required {
  color: var(--error-500);
  margin-right: 4px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  font-family: inherit;
  font-size: 15px;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-sm);
  background: var(--neutral-0);
  color: var(--neutral-900);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-50);
}

.form-group input.field-error,
.form-group select.field-error {
  border-color: var(--error-500);
}

.field-error-msg {
  color: var(--error-500);
  font-size: 13px;
  margin-top: 4px;
  display: none;
}

.form-group.has-error .field-error-msg {
  display: block;
}

.form-submit {
  margin-top: var(--space-2);
}

.form-submit .btn {
  width: 100%;
}

.form-note {
  font-size: 13px;
  color: var(--neutral-600);
  margin-top: var(--space-1);
  text-align: center;
}

.form-alert {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  margin-bottom: var(--space-2);
  margin-top: var(--space-2);
  display: none;
}

.form-alert.show {
  display: block;
}

.form-alert.success {
  background: var(--success-50);
  color: var(--success-700);
  border: 1px solid var(--success-500);
}

.form-alert.error {
  background: var(--error-50);
  color: var(--error-700);
  border: 1px solid var(--error-500);
}

@media (max-width: 560px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}



.majors-intro {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-5) var(--space-3) var(--space-2);
}

.majors-intro h1 {
  color: var(--primary-700);
  font-size: 26px;
}

.majors-intro p {
  color: var(--neutral-600);
  font-size: 15.5px;
}
.majors-image {
  display: block;
  width: 100%;
  height: auto;
  margin: 32px auto;
  border-radius: 16px;
}
.category-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-2);
  max-width: var(--max-width);
  margin: var(--space-3) auto var(--space-6);
  padding: 0 var(--space-3);
}

.category-card {
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-1);
  text-align: center;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  font-family:inherit;
  color: var(--neutral-900);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.category-card:hover {
  border-color: var(--primary-500);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.category-card.active {
  background: var(--primary-500);
  border-color: var(--primary-500);
  color: var(--neutral-0);
}

@media (max-width: 900px) {
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 560px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.majors-list-section {
  max-width: var(--max-width);
  margin: 0 auto var(--space-6);
  padding: 0 var(--space-3);
  display: none;
}

.majors-list-section.show {
  display: block;
}

.majors-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.majors-list-header h2 {
  font-size: 20px;
  color: var(--primary-700);
  margin: 0;
}

.majors-search {
  width: 100%;
  max-width: 320px;
  padding: 10px 14px;
  font-family: inherit;
  font-size: 15px;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-sm);
}

.majors-search:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-50);
}

.majors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
  max-height: 560px;
  overflow-y: auto;
  padding: 4px;
}

.major-item {
  display: block;
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 15px;
  color: var(--neutral-900);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.major-item:hover {
  border-color: var(--primary-500);
  background: var(--primary-50);
}

.majors-empty-msg,
.majors-no-result {
  color: var(--neutral-600);
  font-size: 15px;
  text-align: center;
  padding: var(--space-4) 0;
}

@media (max-width: 900px) {
  .majors-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .majors-grid {
    grid-template-columns: 1fr;
    max-height: 460px;
  }
}



.major-page {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-3) var(--space-6);
}

.major-back-link {
  display: inline-block;
  color: var(--primary-600);
  font-size: 14.5px;
  margin-bottom: var(--space-2);
}

.major-back-link:hover {
  text-decoration: underline;
}

.major-header {
  border-bottom: 2px solid var(--primary-100);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-3);
}

.major-header .category-tag {
  display: inline-block;
  background: var(--secondary-500);
  color: var(--neutral-0);
  font-size: 14px;
  padding: 3px 12px;
  border-radius: 20px;
  margin-right: 3px;
  margin-left: 3px;
  margin-bottom: var(--space-3);
}
.major-header .category-tag:nth-child(1) { background-color: var(--primary-600); }
.major-header .category-tag:nth-child(2) { background-color: var(--secondary-600); }
.major-header .category-tag:nth-child(3) { background-color: var(--error-700); }
.major-header h1 {
  color: var(--primary-700);
  font-size: 30px;
}

.major-section {
  margin-bottom: var(--space-3);
}

.major-section h2 {
  color: var(--primary-600);
  font-size: 18px;
  border-right: 4px solid var(--secondary-500);
  padding-right: 12px;
}

.major-section p {
  color: var(--neutral-800);
  font-size: 15.5px;
}

.major-not-found {
  text-align: center;
  padding: var(--space-6) 0;
  color: var(--neutral-600);
}
html,
body {
  min-height: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}



.about-page {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 var(--space-3) var(--space-6);
}

.about-team-photo {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  height: 320px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  object-fit: cover;
  background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-4);
}

/*.about-team-photo picture {
  width: 100%;
  height: 100%;
  position: relative;
  z-index: 2;
}

.about-team-photo picture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-team-photo picture img:not([src]),
.about-team-photo picture img[src=""] {
  display: none;
}

.about-team-photo:has(picture img[src]:not([src=""])) .about-team-photo-placeholder {
  display: none;
}
*/
.about-text {
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-5);
  line-height: 1.85;
}

.about-text p {
  color: var(--neutral-800);
  font-size: 15.5px;
}



.contact-section {
  text-align: center;
}

.contact-section h2 {
  color: var(--primary-700);
  font-size: 22px;
  margin-bottom: var(--space-3);
}

.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  max-width: 640px;
  margin: 0 auto;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-3);
  transition: box-shadow 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}

.contact-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-200);
  transform: translateY(-3px);
}

.contact-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-50);
  color: var(--primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}

.contact-card-label {
  font-size: 14px;
  color: var(--neutral-600);
  font-weight: 500;
}

.contact-card-value {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-700);
  direction: ltr;
}

@media (max-width: 560px) {
  .contact-cards {
    grid-template-columns: 1fr;
  }

  .about-team-photo {
    height: 220px;
  }
}



html, body {
  overflow-x: hidden;
  max-width: 100%;
}



.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0 8px;
  transition: border-color 0.15s ease;
}

.nav-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--neutral-800);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}



picture.responsive-img {
  display: block;
  width: 100%;
}

picture.responsive-img img {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 768px) {
  

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    padding: var(--space-1) 0;
    background: var(--neutral-0);
    border-top: 1px solid var(--neutral-200);
  }

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

  .main-nav a {
    padding: 14px 4px;
    border-bottom: 1px solid var(--neutral-100);
    font-size: 16px;
  }

  .main-nav a:last-child {
    border-bottom: none;
  }

  .main-nav a:hover,
  .main-nav a.active {
    border-bottom-color: transparent;
    background: var(--primary-50);
  }

  .site-header .container {
    flex-wrap: nowrap;
  }

  

  .banner {
    margin: var(--space-2) auto 0;
    margin-left: 10px;
    margin-right: 10px;
    border-radius: var(--radius-md);
  }

  .banner-slide-content {
    padding: var(--space-3);
  }

  .banner-slide-content p {
    font-size: 13.5px;
  }

  

  .main-cards {
    margin: var(--space-3) auto;
    padding: 0 var(--space-2);
  }

  .main-card {
    padding: var(--space-3);
  }

  .main-card h3 {
    font-size: 18px;
  }

  .main-card p {
    font-size: 14px;
  }

  

  .page-title-block {
    padding: var(--space-3) 0 var(--space-1);
  }

  .page-title-block h1 {
    font-size: 22px;
  }

  .page-title-block p {
    font-size: 14px;
  }

  

  .form-wrapper {
    padding: var(--space-3);
    margin: 0 var(--space-2) var(--space-5);
  }

  .form-group input,
  .form-group select {
    padding: 13px 14px;
    font-size: 16px;
  }

  .btn {
    padding: 14px 28px;
  }

  

  .majors-intro {
    padding: var(--space-3) var(--space-2) var(--space-1);
  }

  .majors-intro h1 {
    font-size: 22px;
  }

  .majors-intro p {
    font-size: 14px;
  }

  .category-grid {
    padding: 0 var(--space-2);
  }

  .category-card {
    padding: var(--space-2) var(--space-1);
    font-size: 15px;
  }

  .majors-list-section {
    padding: 0 var(--space-2);
  }

  .majors-list-header {
    flex-direction: column;
    align-items: stretch;
  }

  .majors-search {
    max-width: 100%;
  }

  .majors-grid {
    max-height: 420px;
  }

  

  .major-page {
    padding: var(--space-3) var(--space-2) var(--space-5);
  }

  .major-header h1 {
    font-size: 22px;
  }

  .major-section h2 {
    font-size: 16px;
  }

  .major-section p {
    font-size: 14.5px;
  }

  

  .about-page {
    padding: 0 var(--space-2) var(--space-5);
  }

  .about-text {
    padding: var(--space-3);
  }

  .about-text p {
    font-size: 14.5px;
  }

  .contact-section h2 {
    font-size: 20px;
  }

  .contact-card {
    padding: var(--space-3) var(--space-2);
  }

  .contact-card-value {
    font-size: 15px;
  }

  

  .site-footer {
    padding: var(--space-3) 0;
  }

  .site-footer .container {
    padding: 0 var(--space-2);
    font-size: 13px;
  }
}

@media (max-width: 420px) {
  .site-logo {
    font-size: 17px;
  }

  .banner {
    height: 170px;
    border-radius: var(--radius-sm);
  }

  .banner-slide-content h2 {
    font-size: 17px;
  }

  .banner-slide-content p {
    font-size: 12.5px;
  }

  .page-title-block h1 {
    font-size: 20px;
  }

  .majors-intro h1 {
    font-size: 20px;
  }

  .major-header h1 {
    font-size: 20px;
  }

  .contact-section h2 {
    font-size: 18px;
  }
}