:root {
  --primary: #2563eb;
  --dark: #020617;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui;
}

body {
  background: var(--bg);
  color: var(--text);
}

/* BRAND */
.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand {
  font-weight: 800;
  font-size: 1rem;
  color: #2563eb;
  letter-spacing: 1px;
}

.tagline {
  font-size: 0.7rem;
  color: #64748b;
}

/* MENU BUTTON */
.menu-btn {
  font-size: 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: #0f172a;
}

/* MOBILE SIDE MENU */
.nav-actions {
  position: fixed;
  top: 0;
  right: -100%;
  height: 100vh;
  width: 260px;
  background: white;
  display: flex;
  flex-direction: column;
  padding: 80px 20px 20px;
  gap: 15px;
  transition: right 0.35s ease;
  z-index: 9999;
  border-left: 1px solid #e2e8f0;
}

/* LINKS */
.nav-actions a {
  text-decoration: none;
  color: #2563eb;
  font-size: 1rem;
  padding: 12px;
  border-radius: 10px;
  transition: 0.2s;
}

.nav-actions a:hover {
  background: #f1f5f9;
  color: #0f172a;
}

/* OPEN STATE */
.nav-actions.active {
  right: 0;
}

/* HERO */

.hero {
  background: radial-gradient(circle at top, #0f172a, #020617);
  color: white;
  text-align: center;
  padding: 140px 20px 100px;
  position: relative;
  overflow: hidden;
}

/* subtle glow effect */
.hero::before {
  content: "";
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.25), transparent 70%);
  filter: blur(60px);
}

.hero-container {
  max-width: 800px;
  margin: auto;
  position: relative;
  z-index: 1;
}

/* SMALL LABEL */
.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #93c5fd;
  margin-bottom: 15px;
}

/* MAIN HEADLINE */
.hero h1 {
  font-size: 2.4rem;
  line-height: 1.2;
  margin-bottom: 15px;
  letter-spacing: -1px;
}

/* SUBTITLE */
.hero-subtitle {
  font-size: 1rem;
  color: #cbd5e1;
  margin-bottom: 10px;
  line-height: 1.6;
}

/* DESCRIPTION */
.hero-description {
  font-size: 0.95rem;
  color: #94a3b8;
  line-height: 1.7;
  max-width: 650px;
  margin: auto;
}

.btn-primary,
.btn-light {
  display: inline-block;
  padding: 12px 18px;
  margin: 5px;
  border-radius: 8px;
}

.btn-primary {
  background: white;
  color: #2563eb;
}
.btn-light {
  border: 1px solid white;
}

/* ABOUT */

.about {
  padding: 40px 20px;
}

.about-card {
  background: white;
  padding: 25px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.about-card h2 {
  margin-bottom: 15px;
  color: #2563eb;
}

.about-intro {
  margin-bottom: 25px;
  font-size: 1rem;
  color: #334155;
}

/* GRID */
.about-grid {
  display: grid;
  gap: 15px;
}

/* ITEMS */
.about-item {
  padding: 18px;
  border-radius: 12px;
  background: #f8fafc;
  transition: all 0.25s ease;
}

.about-item h3 {
  font-size: 0.95rem;
  margin-bottom: 6px;
  color: #0f172a;
}

.about-item p {
  font-size: 0.9rem;
  color: #475569;
}

/* HOVER EFFECT */
.about-item:hover {
  background: #2563eb;
  color: white;
  transform: translateY(-4px);
}

.about-item:hover p,
.about-item:hover h3 {
  color: white;
}

/* CORE */
.core {
  padding: 60px 20px;
  background: linear-gradient(to bottom, #f8fafc, #ffffff);
}

.core-card {
  max-width: 1000px;
  margin: auto;
  padding: 40px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(226, 232, 240, 0.6);
}

.core-card h2 {
  font-size: 1.8rem;
  color: #0f172a;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}

.core-intro {
  color: #475569;
  font-size: 1rem;
  margin-bottom: 30px;
  max-width: 700px;
}

/* GRID */
.core-grid {
  display: grid;
  gap: 18px;
}

/* CARD STYLE (ELITE LOOK) */
.core-item {
  padding: 22px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.8);
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

/* subtle top highlight line */
.core-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, #2563eb, #60a5fa);
  transition: width 0.4s ease;
}

.core-item h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  color: #0f172a;
  letter-spacing: -0.2px;
}

.core-item p {
  font-size: 0.92rem;
  color: #64748b;
  line-height: 1.6;
}

/* HOVER = PREMIUM INTERACTION */
.core-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  border-color: rgba(37, 99, 235, 0.25);
}

.core-item:hover::before {
  width: 100%;
}

.modules {
  padding: 70px 20px;
  background: #ffffff;
}

.modules-container {
  max-width: 1100px;
  margin: auto;
}

.modules h2 {
  font-size: 1.8rem;
  color: #0f172a;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}

.modules-intro {
  color: #64748b;
  margin-bottom: 30px;
  max-width: 700px;
  line-height: 1.6;
}

/* GRID */
.module-grid {
  display: grid;
  gap: 18px;
}

/* ELITE CARD STYLE */
.module-card {
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.8);
  border-radius: 18px;
  padding: 22px;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

/* subtle accent line */
.module-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, #2563eb, #60a5fa);
  transition: width 0.4s ease;
}

.module-card h3 {
  font-size: 1rem;
  color: #0f172a;
  margin-bottom: 6px;
  letter-spacing: -0.2px;
}

.module-card p {
  font-size: 0.9rem;
  color: #64748b;
  line-height: 1.5;
}

/* HOVER = PREMIUM FEEL */
.module-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  border-color: rgba(37, 99, 235, 0.25);
}

.module-card:hover::before {
  width: 100%;
}

.steps {
  padding: 70px 20px;
  background: linear-gradient(to bottom, #ffffff, #f8fafc);
}

.steps-container {
  max-width: 1000px;
  margin: auto;
}

.steps h2 {
  font-size: 1.8rem;
  color: #0f172a;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}

.steps-intro {
  color: #64748b;
  max-width: 700px;
  margin-bottom: 35px;
  line-height: 1.6;
}

/* GRID */
.steps-grid {
  display: grid;
  gap: 18px;
}

/* STEP CARD */
.step {
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.8);
  border-radius: 18px;
  padding: 24px;
  position: relative;
  transition: all 0.35s ease;
  overflow: hidden;
}

/* subtle top accent line */
.step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, #2563eb, #60a5fa);
  transition: width 0.4s ease;
}

/* NUMBER STYLE */
.step-number {
  font-size: 0.8rem;
  font-weight: 600;
  color: #2563eb;
  margin-bottom: 10px;
  letter-spacing: 1px;
}

/* TEXT */
.step h3 {
  font-size: 1rem;
  color: #0f172a;
  margin-bottom: 6px;
}

.step p {
  font-size: 0.9rem;
  color: #64748b;
  line-height: 1.6;
}

/* HOVER */
.step:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  border-color: rgba(37, 99, 235, 0.25);
}

.step:hover::before {
  width: 100%;
}

/* EXPERIENCE SECTION */
.experience {
  padding: 80px 20px;
  background: linear-gradient(180deg, #f8fafc, #eef2ff);
}

.experience-container {
  max-width: 1100px;
  margin: auto;
  text-align: center;
}

.experience h2 {
  font-size: 1.8rem;
  color: #0f172a;
  margin-bottom: 10px;
}

.experience-sub {
  color: #64748b;
  font-size: 0.95rem;
  margin-bottom: 40px;
}

/* GRID */
.experience-grid {
  display: grid;
  gap: 20px;
}

/* CARD */
.experience-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  border-radius: 18px;
  padding: 25px 20px;
  text-align: left;

  border: 1px solid rgba(226, 232, 240, 0.6);

  transition: all 0.3s ease;
}

/* ICON */
.exp-icon {
  width: 45px;
  height: 45px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;

  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  color: white;
  font-size: 18px;

  margin-bottom: 15px;
}

/* TEXT */
.experience-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  color: #0f172a;
}

.experience-card p {
  font-size: 0.9rem;
  color: #475569;
  line-height: 1.5;
}

/* HOVER (ELITE FEEL) */
.experience-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  border-color: rgba(37, 99, 235, 0.2);
}
.experience::before {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  background: #2563eb20;
  filter: blur(100px);
  top: -50px;
  left: -50px;
}

/* CTA */

.cta {
  padding: 80px 20px;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: white;
  text-align: center;
}

.cta-container {
  max-width: 800px;
  margin: auto;
}

.cta h2 {
  font-size: 1.9rem;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.cta p {
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 25px;
}

/* CONTACT BUTTONS */
.cta-contact {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.cta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  color: white;
  text-decoration: none;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
}

.cta-item i {
  font-size: 1.1rem;
}

/* HOVER EFFECT */
.cta-item:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
}

/* WHATSAPP ACCENT */
.cta-item.whatsapp i {
  color: #25d366;
}

/* FOOT NOTE */
.cta-note {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-top: 10px;
}

.footer {
  padding: 40px 20px;
  background: #0f172a;
  color: #cbd5e1;
}

.footer-container {
  max-width: 1000px;
  margin: auto;
  display: grid;
  gap: 20px;
}

/* BRAND */
.footer-brand h3 {
  color: white;
  font-size: 1.1rem;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #94a3b8;
  max-width: 400px;
}

/* META */
.footer-meta {
  font-size: 0.85rem;
  color: #64748b;
  line-height: 1.6;
}

/* TABLET+ */
@media (min-width: 768px) {
  .hero h1 {
    font-size: 3rem;
  }
  .about-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .module-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .core-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .module-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-container {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    justify-content: space-between;
  }

  .footer-meta {
    text-align: right;
  }

  .menu-btn {
    display: none;
  }

  .hero h1 {
    font-size: 3rem;
  }
}

/* =========================
   HEADER (WRAPPER ONLY)
========================= */
.header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e2e8f0;
}

/* =========================
   TOP ROW (LOGO + MENU)
========================= */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
}

/* =========================
   BRAND
========================= */
.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand {
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 1px;
  color: #0f172a;
  color: #2563eb;
}

.tagline {
  font-size: 0.7rem;
  color: #64748b;
}

/* =========================
   MENU BUTTON (MOBILE)
========================= */
.menu-btn {
  width: 30px;
  height: 22px;
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-btn span {
  position: absolute;
  width: 100%;
  height: 2px;
  background: #0f172a;
  left: 0;
  transition: 0.3s ease;
  border-radius: 2px;
}

.menu-btn span:nth-child(1) {
  top: 0;
}

.menu-btn span:nth-child(2) {
  top: 10px;
}

.menu-btn span:nth-child(3) {
  top: 20px;
}

/* ACTIVE STATE → X */
.menu-btn.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 10px;
}

.menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 10px;
}

/* =========================
   MOBILE DRAWER (DEFAULT)
========================= */
.nav-actions {
  position: fixed;
  top: 0;
  right: -100%;
  height: 100vh;
  width: 260px;

  background: white;
  display: flex;
  flex-direction: column;
  gap: 16px;

  padding: 80px 20px 20px;

  transition: right 0.45s cubic-bezier(0.77, 0, 0.18, 1);

  z-index: 9999;

  border-left: 1px solid #e2e8f0;
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.12);
}

.nav-actions.active {
  right: 0;
}

/* =========================
   NAV LINKS
========================= */
.nav-actions a {
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.4s ease;
}

/* when menu opens */
.nav-actions.active a {
  opacity: 1;
  transform: translateX(0);
}

/* stagger effect */
.nav-actions.active a:nth-child(1) {
  transition-delay: 0.05s;
}
.nav-actions.active a:nth-child(2) {
  transition-delay: 0.1s;
}
.nav-actions.active a:nth-child(3) {
  transition-delay: 0.15s;
}

/* =========================
   DESKTOP (ENHANCEMENT)
========================= */
@media (min-width: 768px) {
  /* HEADER BECOMES CONTAINER */
  .header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1100px;
    margin: auto;
    padding: 0 20px;
  }

  /* CLEAN NAV ROW */
  .nav {
    padding: 16px 0;
  }

  /* HIDE MENU BUTTON */
  .menu-btn {
    display: none;
  }

  /* TURN DRAWER INTO INLINE NAV */
  .nav-actions {
    position: static;
    height: auto;
    width: auto;

    flex-direction: row;
    align-items: center;
    gap: 24px;

    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;

    display: flex !important;
  }

  .nav-actions a {
    padding: 0;
    font-size: 0.9rem;
    color: #2563eb;
    opacity: 0.7;
  }
  .experience h2 {
    font-size: 2.2rem;
  }

  .experience-sub {
    font-size: 1rem;
  }

  .experience-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
  }

  .experience-card {
    padding: 30px;
  }
}

@media (min-width: 1024px) {
  .experience-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}