/* ==========================================================================
   Responsive Styles (Mobile First)
   ==========================================================================
   Mobile: 320-576px  (default styles)
   Tablet: 577-992px  (@media min-width: 577px)
   Desktop: 993px+    (@media min-width: 993px)
   ========================================================================== */

/* ==========================================================================
   Base (Mobile First): 320px - 576px
   These styles apply to all viewports and serve as mobile defaults.
   ========================================================================== */

.container {
  padding: 0 15px;
}

/* Grid defaults: single column on mobile */
.grid--2,
.grid--3,
.grid--4 {
  grid-template-columns: 1fr;
}

/* Stats */
.stats__grid {
  display: grid;
  gap: 1.5rem;
  text-align: center;
}

.stats__number {
  font-size: 2rem;
}

/* Hero */
.hero {
  min-height: 70vh;
}

.hero__title {
  font-size: 1.75rem;
}

.hero--inner .hero__title {
  font-size: 1.5rem;
}

.hero__subtitle {
  font-size: 0.95rem;
}

.hero__actions {
  flex-direction: column;
}

/* Sections */
.section {
  padding: 2.5rem 0;
}

.section__title {
  font-size: 1.5rem;
}

.section__subtitle {
  font-size: 0.95rem;
}

/* Cards */
.card__image {
  height: 180px;
}

/* Buttons */
.btn--lg {
  padding: 12px 28px;
  font-size: 0.85rem;
}

/* Footer */
.footer {
  padding: 2.5rem 0 0;
}

.footer__grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

.footer__bottom {
  flex-direction: column;
  text-align: center;
}

.footer__col-title {
  font-size: 1rem;
}

/* News */
.news-card__image {
  height: 160px;
}

.news-grid {
  display: grid;
  gap: var(--spacing-xl);
}

/* Programs */
.programs-grid {
  display: grid;
  gap: var(--spacing-lg);
}

/* Contact */
.contact-grid {
  display: grid;
  gap: var(--spacing-xl);
}

.contact-form-wrap {
  padding: var(--spacing-lg);
}

.contact-map iframe {
  height: 250px;
}

/* Page Hero (inner pages) */
.page-hero {
  min-height: 35vh;
}

.page-hero h1 {
  font-size: 1.75rem;
}

.page-hero p {
  font-size: 1rem;
}

/* 404 page */
.page-404__code {
  font-size: 5rem;
}

/* Navigation (mobile defaults) */
.nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 350px;
  height: 100vh;
  background-color: var(--color-white);
  padding: calc(var(--header-height) + var(--spacing-lg)) var(--spacing-lg) var(--spacing-lg);
  box-shadow: -5px 0 30px var(--color-shadow);
  transition: right var(--transition-base);
  z-index: 999;
  overflow-y: auto;
}

.nav.open {
  right: 0;
}

.nav__list {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.nav__link {
  font-size: 1rem;
  padding: var(--spacing-sm) 0;
}

.burger {
  display: flex;
}

/* Header logo text hidden on mobile */
.header__logo-text {
  display: none;
}

/* Root font sizes for mobile */
:root {
  --font-size-h1: 2rem;
  --font-size-h2: 1.5rem;
  --font-size-h3: 1.25rem;
}

/* Values grid single column */
.values-grid {
  grid-template-columns: 1fr;
}

.achievements-list {
  grid-template-columns: 1fr;
}

.faculty-card__stats {
  gap: var(--spacing-md);
}

.leadership-card__photo {
  height: 200px;
  font-size: 2rem;
}

/* ==========================================================================
   Tablet: 577px - 992px
   ========================================================================== */

@media (min-width: 577px) {

  /* Grid: 2 columns */
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Stats: 2 columns */
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .stats__number {
    font-size: 2.5rem;
  }

  /* Hero */
  .hero {
    min-height: 80vh;
  }

  .hero__title {
    font-size: 2.2rem;
  }

  .hero--inner .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 1.1rem;
  }

  .hero__actions {
    flex-direction: row;
  }

  /* Sections */
  .section {
    padding: 3.5rem 0;
  }

  .section__title {
    font-size: 1.75rem;
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer__bottom {
    flex-direction: row;
    text-align: left;
  }

  /* News grid: 2 columns */
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-card__image {
    height: 180px;
  }

  /* Programs grid: 2 columns */
  .programs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Contact grid: single column on tablet */
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-map iframe {
    height: 300px;
  }

  .contact-form-wrap {
    padding: var(--spacing-xl);
  }

  /* Page Hero */
  .page-hero {
    min-height: 40vh;
  }

  .page-hero h1 {
    font-size: 2.2rem;
  }

  /* 404 page */
  .page-404__code {
    font-size: 6rem;
  }

  /* Header */
  .header__logo-text {
    display: block;
  }

  /* Root font sizes for tablet */
  :root {
    --font-size-h1: 2.2rem;
    --font-size-h2: 1.75rem;
    --font-size-h3: 1.35rem;
  }

  /* Values grid */
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .achievements-list {
    grid-template-columns: repeat(2, 1fr);
  }

}

/* ==========================================================================
   Tablet landscape / Small desktop: 769px - 992px overrides
   ========================================================================== */

@media (min-width: 769px) {

  /* Stats: 4 columns */
  .stats__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero__title {
    font-size: 2.8rem;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  /* Contact grid: 2 columns */
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }

  .contact-map iframe {
    height: 350px;
  }

}

/* ==========================================================================
   Desktop: 993px+
   ========================================================================== */

@media (min-width: 993px) {

  /* Navigation: horizontal bar */
  .nav {
    position: static;
    width: auto;
    max-width: none;
    height: auto;
    padding: 0;
    background: none;
    box-shadow: none;
    overflow: visible;
    display: block;
  }

  .nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-lg);
  }

  .nav__link {
    font-size: var(--font-size-small);
    padding: var(--spacing-sm) 0;
  }

  .burger {
    display: none;
  }

  .header__logo-text {
    display: block;
  }

  /* Grid: full multi-column */
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Hero */
  .hero {
    min-height: 100vh;
  }

  .hero__title {
    font-size: 3.5rem;
  }

  .hero--inner .hero__title {
    font-size: 2.5rem;
  }

  .hero__subtitle {
    font-size: 1.25rem;
  }

  /* Sections */
  .section {
    padding: var(--spacing-xxl) 0;
  }

  .section__title {
    font-size: var(--font-size-h2);
  }

  .section__subtitle {
    font-size: 1.125rem;
  }

  /* Stats */
  .stats__number {
    font-size: 2.5rem;
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
  }

  /* News grid: 3 columns */
  .news-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .news-card__image {
    height: 200px;
  }

  /* Programs grid: 2 columns */
  .programs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Contact grid: 2 columns */
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }

  .contact-map iframe {
    height: 350px;
  }

  .contact-form-wrap {
    padding: var(--spacing-xl);
  }

  /* Page Hero */
  .page-hero {
    min-height: 40vh;
  }

  .page-hero h1 {
    font-size: 2.5rem;
  }

  /* 404 page */
  .page-404__code {
    font-size: 8rem;
  }

  /* Root font sizes for desktop */
  :root {
    --font-size-h1: 2.5rem;
    --font-size-h2: 2rem;
    --font-size-h3: 1.5rem;
  }

  /* Container */
  .container {
    padding: 0 var(--spacing-lg);
  }

  /* Values grid */
  .values-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .achievements-list {
    grid-template-columns: repeat(3, 1fr);
  }

}