/* -------------- Root Variables -------------- */
:root {
  /* Colors */
  --color-bg: #FFFFFF;
  --color-bg-muted: #F3F4F6;     /* softer, more premium grey */
  --color-text: #111827;         /* slightly richer, high-contrast text */
  --color-text-muted: #6B7280;
  --color-border: #E5E7EB;
  --color-primary: #2A9D8F;      /* academic teal */
  --color-primary-hover: #23867A;
  --color-accent: #4F6C8B;
  --color-error: #B91C1C;

  /* Typography */
  --font-heading: 'Merriweather', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Layout */
  --max-width-page: 1200px;
  --max-width-content: 1080px;
  --section-padding-y: 5rem;
  --section-padding-y-large: 6.25rem;
  --section-padding-x: 1.5rem;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 14px;

  /* Shadows (subtle & premium) */
  --shadow-soft: 0 18px 60px rgba(15, 23, 42, 0.06);
  --shadow-subtle: 0 8px 24px rgba(15, 23, 42, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-med: 220ms ease-out;
}

/* -------------- Global Reset -------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.7;
  font-size: 16px;
}

/* -------------- Typography -------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text);
  margin-top: 0;
  margin-bottom: 0.75em;
}

h1 {
  font-size: clamp(2.25rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.4rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--color-text);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition:
    color var(--transition-fast),
    text-decoration-color var(--transition-fast);
}

a:hover,
a:focus {
  color: var(--color-primary-hover);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

small {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* -------------- Layout Helpers -------------- */
.page {
  min-height: 100vh;
  background-color: var(--color-bg);
}

.container {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--section-padding-x);
}

.section {
  padding: var(--section-padding-y) 0;
}

.section--large {
  padding: var(--section-padding-y-large) 0;
}

.section--muted {
  background-color: var(--color-bg-muted);
}

.section__header {
  max-width: 720px;
  margin: 0 auto 2.75rem auto;
  text-align: center;
}

.section__header p {
  color: var(--color-text-muted);
}

/* -------------- Grid Helpers -------------- */
.grid {
  display: grid;
  gap: 2rem;
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3.5rem 0;
  }
}

/* -------------- Header & Nav -------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 20;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.9);
  transition:
    box-shadow var(--transition-med),
    border-color var(--transition-med),
    background-color var(--transition-med);
}

.header__inner {
  max-width: var(--max-width-page);
  margin: 0 auto;
  padding: 0.75rem var(--section-padding-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  transition: padding var(--transition-med);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.header__logo-img {
  height: 36px;
  width: auto;
  display: block;
  transition: height var(--transition-med), transform var(--transition-med);
}

.header__logo-text {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

/* NAV LINK ANIMATIONS */
.nav__link {
  position: relative;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-weight: 500;
  padding: 0.35rem 0.5rem;
  border-radius: 999px;
  transition:
    color var(--transition-fast),
    background-color var(--transition-med),
    font-weight var(--transition-fast);
}

/* override global underline on nav links */
.nav__link:hover {
  text-decoration: none;
}

/* underline "ink" animation */
.nav__link::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.15rem;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: 50% 50%;
  opacity: 0;
  transition:
    transform var(--transition-med),
    opacity var(--transition-fast);
}

/* hover/focus state */
.nav__link:hover,
.nav__link:focus {
  color: var(--color-primary);
  font-weight: 600;
}

.nav__link:hover::after,
.nav__link:focus::after {
  transform: scaleX(1);
  opacity: 1;
}

/* active item = pill + underline */
.nav__link--active {
  color: var(--color-primary);
  font-weight: 600;
  background-color: rgba(42, 157, 143, 0.06);
}

.nav__link--active::after {
  transform: scaleX(1);
  opacity: 1;
}

/* shrink header on scroll */
.header--scrolled {
  box-shadow: var(--shadow-subtle);
  border-bottom-color: rgba(148, 163, 184, 0.9);
}

.header--scrolled .header__inner {
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
}

.header--scrolled .header__logo-img {
  height: 30px;
}

.header__cta {
  margin-left: 1rem;
}

/* Hamburger button (hidden by default, shown on mobile) */
.nav-toggle {
  display: none;
  position: relative;
  width: 32px;
  height: 24px;
  padding: 0;
  margin-left: 0.5rem;
  border: none;
  background: transparent;
  cursor: pointer;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.nav-toggle span {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 999px;
  background-color: #4B5563;
  transition:
    transform var(--transition-med),
    opacity var(--transition-fast),
    top var(--transition-med),
    bottom var(--transition-med);
}

.nav-toggle span:nth-child(1) {
  top: 0;
}

.nav-toggle span:nth-child(2) {
  top: 11px;
}

.nav-toggle span:nth-child(3) {
  bottom: 0;
}

/* Transform into X when open */
.header--nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(11px) rotate(45deg);
}

.header--nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.header--nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-11px) rotate(-45deg);
}

@media (max-width: 768px) {
  .header__inner {
    justify-content: space-between;
  }

  .header__logo-text {
    display: none; /* keep only icon on small screens */
  }

  /* mobile nav panel */
  .nav {
    position: fixed;
    top: 56px;
    right: 1.5rem;
    left: 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: 0.6rem 0.4rem;
    background-color: #FFFFFF;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    display: none;
  }

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

  .nav__link {
    width: 100%;
    text-align: left;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-md);
  }

  .nav__link::after {
    left: 0.75rem;
    right: 0.75rem;
    bottom: 0.35rem;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

/* -------------- Buttons -------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: var(--border-radius-md);
  padding: 0.8rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  letter-spacing: 0.02em;
  text-transform: none;
  transition:
    background-color var(--transition-med),
    color var(--transition-med),
    border-color var(--transition-med),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn--primary {
  background-color: var(--color-primary);
  color: #FFFFFF;
  box-shadow: var(--shadow-subtle);
}

.btn--primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.btn--secondary {
  background-color: #FFFFFF;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--secondary:hover {
  background-color: #ECFDF5;
}

.btn--small {
  padding: 0.55rem 1.15rem;
  font-size: 0.875rem;
}

/* -------------- Hero -------------- */
.hero {
  padding: 4.75rem 0 3.75rem 0;
}

.hero__inner {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--section-padding-x);
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.3fr);
  gap: 3rem;
  align-items: center;
}

.hero__kicker {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.hero__title {
  margin-bottom: 1rem;
}

.hero__subtitle {
  margin-bottom: 1.7rem;
  color: var(--color-text-muted);
  max-width: 36rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
  margin-bottom: 1.1rem;
}

.hero__email {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.hero__email strong {
  color: var(--color-text);
}

.hero__side {
  justify-self: center;
}

.hero__card {
  background-color: #FFFFFF;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 2rem;
  border: 1px solid rgba(229, 231, 235, 0.8);
}

.hero__card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.9rem;
}

.hero__list {
  padding-left: 1.25rem;
  margin: 0;
}

.hero__list li {
  margin-bottom: 0.45rem;
  color: var(--color-text-muted);
}

@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero__side {
    order: -1;
  }
}

/* -------------- Features (Why Choose Us) -------------- */
.features__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.85rem;
}

.feature {
  background-color: #FFFFFF;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  padding: 1.6rem 1.6rem 1.85rem;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
}

.feature__icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  background-color: #E0F2FE;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
  color: var(--color-accent);
  font-size: 1.1rem;
}

.feature__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
}

.feature__text {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .features__grid {
    grid-template-columns: 1fr;
  }
}

/* -------------- Services Cards -------------- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.85rem;
}

.service-card {
  background-color: #FFFFFF;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  padding: 1.9rem 1.7rem 1.9rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
  border-color: var(--color-primary);
  background-color: #FFFFFF;
}

.service-card__icon {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  background-color: #ECFDF5;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
  font-size: 1.1rem;
}

.service-card__title {
  font-size: 1.08rem;
  font-weight: 600;
}

.service-card__text {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.service-card__meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.service-card__footer {
  margin-top: auto;
  padding-top: 0.75rem;
}

@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .services__grid {
    grid-template-columns: 1fr;
  }
}

/* -------------- Funding Banner -------------- */
.funding-banner {
  background-color: var(--color-bg-muted);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 2.75rem 0;
}

.funding-banner__inner {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--section-padding-x);
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  align-items: center;
  justify-content: space-between;
}

.funding-banner__text {
  max-width: 40rem;
}

.funding-banner__text p {
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .funding-banner__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* -------------- Steps (How It Works) -------------- */
.steps__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.85rem;
}

.step {
  background-color: #FFFFFF;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  padding: 1.6rem 1.6rem 1.8rem;
  text-align: left;
}

.step__number {
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background-color: #ECFDF5;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.step__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
}

.step__text {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .steps__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .steps__grid {
    grid-template-columns: 1fr;
  }
}

/* -------------- Testimonials -------------- */
.testimonials {
  background-color: var(--color-bg-muted);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.85rem;
}

.testimonial-card {
  background-color: #FFFFFF;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  padding: 1.7rem 1.9rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.testimonial-card__quote {
  font-style: italic;
}

.testimonial-card__author {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.testimonial-card__meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .testimonials__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .testimonials__grid {
    grid-template-columns: 1fr;
  }
}

/* -------------- FAQ Accordion -------------- */
.faq__list {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

.faq-item:first-of-type {
  border-top: 1px solid var(--color-border);
}

.faq-item__button {
  width: 100%;
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-item__icon {
  margin-left: 1rem;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq-item__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 260ms ease-out;
}

.faq-item__content-inner {
  padding-top: 0.55rem;
  padding-right: 1.5rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* when active, add class .faq-item--open via JS */
.faq-item--open .faq-item__content {
  max-height: 260px;
}

.faq-item--open .faq-item__icon {
  transform: rotate(90deg);
}

/* -------------- Footer -------------- */
.footer {
  background-color: var(--color-bg-muted);
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
}

.footer__inner {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 2.75rem var(--section-padding-x) 2.1rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 1.85rem;
  margin-bottom: 1.6rem;
}

.footer__title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.footer__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer__link {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

@media (max-width: 900px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
  }
}