/* ============================================
   LevelUP Lab — Main Stylesheet
   Colors extracted from logo:
   Purple: #7B2FBE  Green: #39B54A
   ============================================ */

/* --- CSS Variables --- */
:root {
  --purple: #7B2FBE;
  --purple-light: #9B4FDE;
  --purple-dark: #5A1F8E;
  --green: #39B54A;
  --green-light: #4FD462;
  --green-dark: #2A8A38;
  --bg-primary: #0D0D12;
  --bg-secondary: #13131A;
  --bg-card: #1A1A24;
  --bg-card-hover: #22222E;
  --text-primary: #F0F0F5;
  --text-secondary: #A0A0B0;
  --text-muted: #6B6B80;
  --border-color: #2A2A3A;
  --border-subtle: #1F1F2E;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-purple: 0 4px 20px rgba(123,47,190,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-height: 72px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); }

.section-title {
  text-align: center;
  margin-bottom: 16px;
}

.section-title span {
  color: var(--purple-light);
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  justify-content: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple), var(--purple-dark));
  color: #fff;
  box-shadow: var(--shadow-purple);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--purple-light), var(--purple));
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(123,47,190,0.3);
}

.btn-whatsapp {
  background: linear-gradient(135deg, #25D366, #128C7E);
  color: #fff;
}
.btn-whatsapp:hover {
  background: linear-gradient(135deg, #2EE672, #25D366);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(37,211,102,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-color);
}
.btn-outline:hover {
  border-color: var(--purple);
  color: var(--purple-light);
  transform: translateY(-2px);
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(13,13,18,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(13,13,18,0.95);
  box-shadow: var(--shadow-md);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-logo img {
  height: 44px;
  width: auto;
}

.header-logo-text {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
}

.header-logo-text span {
  color: var(--purple-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--purple);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.header-cta {
  flex-shrink: 0;
}

.header-cta .btn {
  padding: 10px 20px;
  font-size: 0.85rem;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(123,47,190,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(57,181,74,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-content { position: relative; z-index: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(123,47,190,0.1);
  border: 1px solid rgba(123,47,190,0.2);
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--purple-light);
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  margin-bottom: 20px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--purple-light), var(--green-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 500px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 480px;
}

.hero-image-wrapper img {
  border-radius: var(--radius-lg);
  width: 100%;
}

/* --- Sections common --- */
section {
  padding: 96px 0;
}

section:nth-child(even) {
  background: var(--bg-secondary);
}

/* --- Services --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--purple), var(--green));
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(123,47,190,0.3);
  box-shadow: var(--shadow-purple);
}

.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(123,47,190,0.1);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  color: var(--purple-light);
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

.service-note {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
}

/* --- Platforms --- */
.platforms-grid {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 40px;
  text-align: center;
  transition: var(--transition);
  min-width: 200px;
}

.platform-card:hover {
  border-color: rgba(123,47,190,0.3);
  transform: translateY(-2px);
}

.platform-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.platform-card h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.platform-card p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* --- Why Us --- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.why-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.why-item:hover {
  border-color: rgba(123,47,190,0.2);
}

.why-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(57,181,74,0.1);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  color: var(--green);
}

.why-icon svg {
  width: 20px;
  height: 20px;
}

.why-item h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.why-item p {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

/* --- Process --- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}

.process-step {
  text-align: center;
  padding: 32px 24px;
  position: relative;
}

.process-number {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--purple), var(--purple-dark));
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 20px;
  color: #fff;
}

.process-step h3 {
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.process-step p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* --- Gallery --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.gallery-item {
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.88rem;
  transition: var(--transition);
}

.gallery-item:hover {
  border-color: rgba(123,47,190,0.3);
}

.gallery-item svg {
  width: 40px;
  height: 40px;
  opacity: 0.4;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Reviews --- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(123,47,190,0.2);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--green));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  flex-shrink: 0;
}

.review-meta h4 {
  font-size: 0.95rem;
  font-weight: 600;
}

.review-meta p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.review-stars {
  color: #F5A623;
  font-size: 0.9rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-text {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  font-style: italic;
}

.review-service {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.reviews-notice {
  text-align: center;
  margin-top: 32px;
  padding: 16px 24px;
  background: rgba(123,47,190,0.05);
  border: 1px dashed rgba(123,47,190,0.2);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* --- FAQ --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(123,47,190,0.2);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  gap: 16px;
  background: none;
  border: none;
  color: var(--text-primary);
  width: 100%;
  text-align: left;
}

.faq-question:hover {
  color: var(--purple-light);
}

.faq-chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: var(--transition);
  color: var(--text-muted);
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--purple-light);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* --- CTA --- */
.cta-section {
  text-align: center;
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(123,47,190,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section h2 {
  margin-bottom: 16px;
  position: relative;
}

.cta-section .section-subtitle {
  margin-bottom: 36px;
}

.cta-section .btn {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* --- Footer --- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.6;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 0.88rem;
  padding: 4px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--purple-light);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  color: var(--text-muted);
  font-size: 0.82rem;
  transition: var(--transition);
}

.footer-bottom-links a:hover {
  color: var(--purple-light);
}

/* --- Scroll Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- WhatsApp Float --- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  z-index: 999;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37,211,102,0.5);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: #fff;
}

/* =====================
   RESPONSIVE
   ===================== */

@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-height: 64px; }

  .nav-links, .header-cta {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(13,13,18,0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px;
    gap: 0;
    border-bottom: 1px solid var(--border-color);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }

  .nav-links.active {
    display: flex;
  }

  .header-cta.active {
    display: flex;
    position: fixed;
    top: auto;
    bottom: 0;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    border-bottom: none;
  }

  .nav-links a {
    padding: 14px 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links a::after { display: none; }

  .menu-toggle { display: flex; }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .hero-description { margin: 0 auto 32px; }
  .hero-buttons { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-image-wrapper { max-width: 300px; }

  .services-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: 1fr; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  section { padding: 64px 0; }
}

@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; width: 100%; }
  .hero-buttons .btn { width: 100%; }
  .process-grid { grid-template-columns: 1fr; }
  .platforms-grid { flex-direction: column; align-items: center; }
  .platform-card { width: 100%; }
  .why-grid { grid-template-columns: 1fr; }
}