/* ========================================
   CSS Variables
   ======================================== */
:root {
  --color-primary: #1a1a1a;
  --color-secondary: #0a0a0a;
  --color-lavender: #b8a4d4;
  --color-lavender-light: #d4c5eb;
  --color-lavender-dark: #9b82c7;
  --color-text: #ffffff;
  --color-text-secondary: #c0c0c0;
  --color-text-muted: #808080;
  --color-accent: #b8a4d4;

  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Helvetica Neue", Arial, sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  --transition-default: all 0.3s ease;
  --transition-smooth: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   Reset & Base Styles
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-secondary);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-default);
}

ul {
  list-style: none;
}

/* ========================================
   Header
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(184, 164, 212, 0.1);
}

.header__nav {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-lavender);
  letter-spacing: -0.5px;
}

.header__menu {
  display: flex;
  gap: 3rem;
}

.header__menu-item {
  position: relative;
}

.header__menu-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.5px;
  position: relative;
}

.header__menu-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-lavender);
  transition: width 0.3s ease;
}

.header__menu-link:hover {
  color: var(--color-lavender);
}

.header__menu-link:hover::after {
  width: 100%;
}

.header__mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.header__mobile-toggle-bar {
  width: 25px;
  height: 2px;
  background-color: var(--color-lavender);
  transition: var(--transition-default);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 2rem;
}

.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
      circle at 30% 50%,
      rgba(184, 164, 212, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 70% 50%,
      rgba(155, 130, 199, 0.1) 0%,
      transparent 50%
    );
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  animation: fadeInUp 1s ease;
}

.hero__title {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero__title-main {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -2px;
  line-height: 1.1;
}

.hero__title-sub {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-lavender);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.hero__description {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 3rem;
}

.hero__cta {
  display: inline-block;
  padding: 1rem 3rem;
  background-color: transparent;
  border: 2px solid var(--color-lavender);
  color: var(--color-lavender);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 1px;
  border-radius: 50px;
  transition: var(--transition-default);
}

.hero__cta:hover {
  background-color: var(--color-lavender);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(184, 164, 212, 0.3);
}

/* ========================================
   About Section
   ======================================== */
.about {
  padding: var(--spacing-xl) 2rem;
  background-color: var(--color-primary);
}

.about__container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.about__title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 3rem;
  letter-spacing: -1px;
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.about__text {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 2;
  max-width: 900px;
  margin: 0 auto;
}

/* ========================================
   Mission Section
   ======================================== */
.mission {
  padding: var(--spacing-xl) 2rem;
  background-color: var(--color-secondary);
}

.mission__container {
  max-width: 1200px;
  margin: 0 auto;
}

.mission__title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
  margin-bottom: 4rem;
  letter-spacing: -1px;
}

.mission__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.mission__card {
  background-color: rgba(184, 164, 212, 0.05);
  border: 1px solid rgba(184, 164, 212, 0.15);
  padding: 3rem 2rem;
  border-radius: 10px;
  text-align: center;
  transition: var(--transition-smooth);
}

.mission__card:hover {
  background-color: rgba(184, 164, 212, 0.08);
  border-color: var(--color-lavender);
  transform: translateY(-5px);
}

.mission__card-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.mission__card-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-lavender);
  margin-bottom: 1rem;
}

.mission__card-text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.mission__note {
  text-align: center;
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  padding: 2rem;
  border-top: 1px solid rgba(184, 164, 212, 0.15);
}

/* ========================================
   Philosophy Section
   ======================================== */
.philosophy {
  padding: var(--spacing-xl) 2rem;
  background-color: var(--color-primary);
}

.philosophy__container {
  max-width: 1200px;
  margin: 0 auto;
}

.philosophy__title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
  margin-bottom: 4rem;
  letter-spacing: -1px;
}

.philosophy__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}

.philosophy__item {
  background-color: rgba(184, 164, 212, 0.03);
  border-left: 3px solid var(--color-lavender);
  padding: 2.5rem 2rem;
  transition: var(--transition-smooth);
}

.philosophy__item:hover {
  background-color: rgba(184, 164, 212, 0.08);
  transform: translateX(10px);
}

.philosophy__item-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.philosophy__item-icon {
  font-size: 2rem;
}

.philosophy__item-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-lavender);
}

.philosophy__item-subtitle {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.philosophy__item-text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ========================================
   Curriculum Section
   ======================================== */
.curriculum {
  padding: var(--spacing-xl) 2rem;
  background-color: var(--color-secondary);
}

.curriculum__container {
  max-width: 1000px;
  margin: 0 auto;
}

.curriculum__title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
  margin-bottom: 1rem;
  letter-spacing: -1px;
}

.curriculum__subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: var(--color-lavender);
  margin-bottom: 4rem;
}

.curriculum__timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.curriculum__step {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  position: relative;
  padding-left: 2rem;
}

.curriculum__step::before {
  content: "";
  position: absolute;
  left: 3.5rem;
  top: 5rem;
  width: 2px;
  height: calc(100% + 3rem);
  background: linear-gradient(to bottom, var(--color-lavender), transparent);
}

.curriculum__step:last-child::before {
  display: none;
}

.curriculum__step-number {
  flex-shrink: 0;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--color-lavender-dark),
    var(--color-lavender)
  );
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  box-shadow: 0 5px 20px rgba(184, 164, 212, 0.3);
}

.curriculum__step-content {
  flex: 1;
  background-color: rgba(184, 164, 212, 0.05);
  border: 1px solid rgba(184, 164, 212, 0.15);
  padding: 2rem;
  border-radius: 10px;
  transition: var(--transition-smooth);
}

.curriculum__step-content:hover {
  background-color: rgba(184, 164, 212, 0.08);
  border-color: var(--color-lavender);
  transform: translateX(10px);
}

.curriculum__step-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-lavender);
  margin-bottom: 1rem;
}

.curriculum__step-text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
  padding: var(--spacing-xl) 2rem;
  background: linear-gradient(
    135deg,
    rgba(184, 164, 212, 0.1) 0%,
    rgba(10, 10, 10, 1) 100%
  );
  border-top: 1px solid rgba(184, 164, 212, 0.2);
  border-bottom: 1px solid rgba(184, 164, 212, 0.2);
}

.cta__container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.cta__title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.cta__text {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 3rem;
}

.cta__button {
  display: inline-block;
  padding: 1.2rem 4rem;
  background: linear-gradient(
    135deg,
    var(--color-lavender-dark),
    var(--color-lavender)
  );
  color: var(--color-primary);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 1px;
  border-radius: 50px;
  transition: var(--transition-smooth);
  box-shadow: 0 5px 20px rgba(184, 164, 212, 0.3);
}

.cta__button:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(184, 164, 212, 0.5);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: 4rem 2rem 2rem;
  background-color: var(--color-primary);
  border-top: 1px solid rgba(184, 164, 212, 0.1);
}

.footer__container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
}

.footer__brand-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-lavender);
  margin-bottom: 0.5rem;
}

.footer__brand-tagline {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

.footer__text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.footer__copyright {
  grid-column: 1 / -1;
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(184, 164, 212, 0.1);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-smooth);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
  .hero__title-main {
    font-size: 3rem;
  }

  .hero__title-sub {
    font-size: 1.2rem;
  }

  .about__title,
  .mission__title,
  .philosophy__title,
  .curriculum__title {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .header__menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: rgba(10, 10, 10, 0.98);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    transition: left 0.3s ease;
  }

  .header__menu.active {
    left: 0;
  }

  .header__mobile-toggle {
    display: flex;
  }

  .hero__title-main {
    font-size: 2.5rem;
  }

  .hero__title-sub {
    font-size: 1rem;
    letter-spacing: 2px;
  }

  .hero__description {
    font-size: 1rem;
  }

  .about__title,
  .mission__title,
  .philosophy__title,
  .curriculum__title {
    font-size: 2rem;
  }

  .curriculum__step {
    flex-direction: column;
    padding-left: 0;
  }

  .curriculum__step::before {
    left: 35px;
    top: 90px;
  }

  .cta__title {
    font-size: 2rem;
  }

  .footer__container {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__title-main {
    font-size: 2rem;
  }

  .hero__cta,
  .cta__button {
    padding: 1rem 2rem;
    font-size: 0.95rem;
  }

  .mission__grid,
  .philosophy__grid {
    grid-template-columns: 1fr;
  }
}