/* ==========================================================================
   WiFi FTP Server - Premium Marketing Website Design System
   Color Palette: Primary Purple (#6750A4), Dark Mode Ambient Aesthetic
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@500;600;700;800&display=swap');

:root {
  --primary: #6750A4;
  --primary-gradient: linear-gradient(135deg, #7F67BE 0%, #6750A4 50%, #4F378B 100%);
  --accent-glow: radial-gradient(circle, rgba(127, 103, 190, 0.25) 0%, rgba(15, 13, 21, 0) 70%);
  --bg-dark: #0D0B12;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --text-main: #F4F1FA;
  --text-muted: #A5A0B8;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(127, 103, 190, 0.4);
  --success-color: #2E7D32;
  --shadow-glow: 0 10px 40px -10px rgba(103, 80, 164, 0.5);
  --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
}

/* Reset & Global */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: radial-gradient(circle at 50% -10%, #201738 0%, var(--bg-dark) 50%);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

.gradient-text {
  background: linear-gradient(135deg, #FFFFFF 0%, #D0BCFF 50%, #7F67BE 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 18px 0;
  background: rgba(13, 11, 18, 0.75);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 800;
  font-family: 'Outfit', sans-serif;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  box-shadow: 0 0 12px rgba(103, 80, 164, 0.4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: #FFFFFF;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 28px;
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 45px -5px rgba(103, 80, 164, 0.7);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  padding: 160px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(103, 80, 164, 0.25) 0%, rgba(13, 11, 18, 0) 70%);
  filter: blur(80px);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-badges {
  display: flex;
  gap: 24px;
  align-items: center;
}

.badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.badge-icon {
  color: #D0BCFF;
  font-weight: bold;
}

/* Hero Phone Mockup */
.hero-mockup-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-mockup-frame {
  width: 320px;
  border-radius: 40px;
  overflow: hidden;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.9), 0 0 50px rgba(103, 80, 164, 0.3);
  border: 4px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition-fast);
}

.hero-mockup-frame:hover {
  transform: scale(1.02);
  box-shadow: 0 30px 70px -10px rgba(0, 0, 0, 0.95), 0 0 60px rgba(127, 103, 190, 0.5);
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(103, 80, 164, 0.2);
  border: 1px solid var(--border-glow);
  color: #D0BCFF;
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: 30px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Features Section */
.features-section {
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(12px);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: var(--transition-fast);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-6px);
}

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

.feature-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(103, 80, 164, 0.15);
  border: 1px solid rgba(127, 103, 190, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* Interactive Connection Guide Section */
.guide-section {
  padding: 100px 0;
  background: rgba(255, 255, 255, 0.015);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.tabs-header {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 12px 24px;
  border-radius: 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-btn.active, .tab-btn:hover {
  background: var(--primary-gradient);
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: var(--shadow-glow);
}

.tab-content {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 860px;
  margin: 0 auto;
  backdrop-filter: blur(16px);
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.step-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
  box-shadow: 0 4px 15px rgba(103, 80, 164, 0.4);
}

.step-info h4 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

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

.code-box {
  margin-top: 10px;
  padding: 12px 18px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: 'Courier New', Courier, monospace;
  color: #D0BCFF;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.copy-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition-fast);
}

.copy-btn:hover {
  color: #FFFFFF;
}

/* Gallery Section */
.gallery-section {
  padding: 100px 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: var(--transition-fast);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.gallery-item:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: 0 20px 40px rgba(103, 80, 164, 0.3);
}

.gallery-item img {
  width: 100%;
  display: block;
}

.gallery-caption {
  padding: 16px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  background: rgba(13, 11, 18, 0.9);
}

/* FAQ Section */
.faq-section {
  padding: 100px 0;
}

.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover {
  border-color: var(--border-glow);
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  background: none;
  border: none;
  color: var(--text-main);
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-toggle-icon {
  font-size: 1.3rem;
  transition: transform 0.3s ease;
  color: #D0BCFF;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 28px;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding-bottom: 24px;
}

/* Legal Pages Styling (Privacy & Terms) */
.legal-page {
  padding: 140px 0 100px;
  max-width: 860px;
  margin: 0 auto;
}

.legal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: blur(16px);
}

.legal-content h1 {
  font-size: 2.8rem;
  margin-bottom: 12px;
}

.legal-content .meta-date {
  color: var(--text-muted);
  margin-bottom: 36px;
  font-size: 0.95rem;
}

.legal-content h2 {
  font-size: 1.6rem;
  margin: 32px 0 16px;
  color: #D0BCFF;
}

.legal-content p, .legal-content ul {
  color: var(--text-muted);
  margin-bottom: 18px;
  font-size: 1.02rem;
}

.legal-content ul {
  padding-left: 24px;
}

.legal-content li {
  margin-bottom: 8px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  background: rgba(9, 7, 12, 0.95);
}

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

.footer-brand p {
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 320px;
  font-size: 0.92rem;
}

.footer-col h4 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: #FFFFFF;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.92rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-subtitle {
    margin: 0 auto 36px;
  }
  .hero-actions, .hero-badges {
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.6rem;
  }
  .section-header h2 {
    font-size: 2rem;
  }
  .nav-links {
    display: none;
  }
}