/* ==========================================================================
   ConRegister - Main Stylesheet
   ========================================================================== */

/* Variables */
:root {
  --color-bg: #FAFAFB;
  --color-surface: #FFFFFF;
  --color-text: #334155;
  --color-heading: #0F172A;
  --color-primary: #00A896;
  --color-primary-hover: #028090;
  --color-border: #E2E8F0;
  --color-accent-bg: #F0FDFA;
  
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  
  --transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
  --shadow-md: 0 10px 20px -5px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
  --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --container-width: 1200px;
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

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

a:hover {
  color: var(--color-primary-hover);
}

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

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

/* Typography */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.section-tag {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-accent-bg);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: 24px;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--color-text);
  max-width: 700px;
  margin: 0 auto 48px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: #fff;
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 10px 20px rgba(0, 168, 150, 0.2);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-heading);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-heading);
  color: var(--color-heading);
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(250, 250, 251, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
}

.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-link {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 32px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 24px;
}

.nav-links a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-icon {
  width: 24px;
  height: 24px;
  fill: var(--color-heading);
}

/* Hero Section */
.hero {
  padding: 160px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--color-bg);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(15, 23, 42, 0.06) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.8;
  z-index: -1;
}

.hero-bg-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1;
}

.shape {
  position: absolute;
  filter: blur(80px);
  border-radius: 50%;
  animation: floatShape 20s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);
}

.shape-1 {
  width: 600px;
  height: 600px;
  background: rgba(0, 168, 150, 0.2);
  top: -200px;
  left: -200px;
}

.shape-2 {
  width: 500px;
  height: 500px;
  background: rgba(2, 128, 144, 0.15);
  bottom: -100px;
  right: -50px;
  animation-delay: -7s;
}

.shape-3 {
  width: 400px;
  height: 400px;
  background: rgba(15, 23, 42, 0.1);
  top: 40%;
  left: 30%;
  animation-delay: -14s;
}

@keyframes floatShape {
  0% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(60px, -40px) scale(1.1); }
  66% { transform: translate(-40px, 60px) scale(0.9); }
  100% { transform: translate(20px, -20px) scale(1); }
}

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

.hero-content {
  max-width: 600px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 1.125rem;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-support {
  font-size: 0.875rem;
  color: #64748B;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-visual {
  position: relative;
}

.abstract-illustration {
  position: relative;
  width: 100%;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.abstract-core {
  width: 160px;
  height: 160px;
  background: var(--color-surface);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  z-index: 2;
  position: relative;
}

.abstract-core::after {
  content: '';
  position: absolute;
  top: -24px;
  left: -24px;
  right: -24px;
  bottom: -24px;
  border-radius: 50%;
  border: 1px dashed rgba(0, 168, 150, 0.4);
  animation: spin 30s linear infinite;
  z-index: -1;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.floating-chip {
  position: absolute;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 12px 20px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--color-heading);
  box-shadow: var(--shadow-md);
  z-index: 3;
  animation: float 6s ease-in-out infinite;
}

.chip-icon {
  width: 32px;
  height: 32px;
  background: var(--color-accent-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chip-icon svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-primary);
}

.chip-1 {
  top: 15%;
  left: 0;
  animation-delay: 0s;
}

.chip-2 {
  bottom: 15%;
  left: 15%;
  animation-delay: -2s;
}

.chip-3 {
  top: 35%;
  right: -5%;
  animation-delay: -4s;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
  100% { transform: translateY(0px); }
}

/* Features */
.features {
  padding: 100px 0;
  background-color: var(--color-surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.feature-card {
  padding: 32px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 168, 150, 0.3);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

/* Custom URL Section */
.custom-url {
  padding: 100px 0;
}

.url-box-wrapper {
  background: var(--color-heading);
  border-radius: var(--radius-xl);
  padding: 64px 32px;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.url-box-wrapper .section-title {
  color: white;
  max-width: 600px;
  margin: 0 auto 24px;
}

.url-box-wrapper .section-desc {
  color: #94A3B8;
  margin-bottom: 48px;
}

.browser-bar {
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 500px;
  margin: 0 auto;
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
}

.browser-bar svg {
  width: 20px;
  height: 20px;
  fill: #94A3B8;
  margin-right: 12px;
}

.url-text {
  font-size: 1.25rem;
  font-family: monospace;
  color: white;
}

.url-highlight {
  color: #38BDF8;
  font-weight: bold;
}

.url-badge {
  position: absolute;
  top: -12px;
  right: -12px;
  background: var(--color-primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  transform: rotate(10deg);
}

.years-timeline {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.year-tag {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  color: #CBD5E1;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.year-tag.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* How It Works */
.how-it-works {
  padding: 100px 0;
  background: var(--color-surface);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
  position: relative;
}

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

.step-number {
  width: 48px;
  height: 48px;
  background: var(--color-accent-bg);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 auto 24px;
  position: relative;
  z-index: 2;
}

.step-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

/* Product Previews (Tabs) */
.previews {
  padding: 100px 0;
}

.preview-container {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: flex;
}

.preview-tabs {
  width: 280px;
  background: var(--color-bg);
  border-right: 1px solid var(--color-border);
  padding: 24px 0;
}

.tab-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 16px 24px;
  background: none;
  border: none;
  border-left: 3px solid transparent;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  background: var(--color-surface);
}

.tab-btn[aria-selected="true"] {
  border-left-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-surface);
  font-weight: 700;
}

.preview-content {
  flex: 1;
  padding: 48px;
  position: relative;
  display: flex;
  align-items: center;
}

.tab-panel {
  display: none;
  animation: fadeIn var(--transition-fast);
  width: 100%;
}

.tab-panel.active {
  display: block;
}

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

.panel-title {
  margin-bottom: 24px;
  font-size: 1.75rem;
  color: var(--color-primary);
}

.panel-desc {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text);
}



/* Who is it for */
.who-for {
  padding: 100px 0;
  background: var(--color-surface);
  text-align: center;
}

.tags-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

.audience-tag {
  font-size: 1.125rem;
  padding: 12px 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-weight: 500;
}

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

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 24px;
  background: none;
  border: none;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-heading);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-fast);
}

.faq-item.active .faq-answer {
  padding: 0 24px 24px;
  max-height: 500px; /* arbitrary max height for animation */
}

/* Contact */
.contact {
  padding: 100px 0;
  background: var(--color-surface);
  text-align: center;
}

.contact-box {
  background: var(--color-accent-bg);
  border: 1px solid #CCFBF1;
  border-radius: var(--radius-xl);
  padding: 64px 32px;
  max-width: 800px;
  margin: 0 auto;
}

.contact-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
}

/* Footer */
.site-footer {
  background: var(--color-heading);
  color: #94A3B8;
  padding: 64px 0 32px;
}

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

.footer-logo {
  height: 32px;
  margin-bottom: 24px;
}

.footer-desc {
  max-width: 300px;
}

.footer-title {
  color: white;
  font-size: 1.125rem;
  margin-bottom: 24px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: #94A3B8;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

/* Utilities & Animations */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    transition: none;
    opacity: 1;
    transform: none;
  }
  
  .floating-card, .tab-panel {
    animation: none;
  }
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 64px;
  }
  
  .hero-content {
    margin: 0 auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-support {
    justify-content: center;
  }
  
  .preview-container {
    flex-direction: column;
  }
  
  .preview-tabs {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    overflow-x: auto;
    padding: 0;
  }
  
  .tab-btn {
    border-left: none;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    text-align: center;
  }
  
  .tab-btn[aria-selected="true"] {
    border-left-color: transparent;
    border-bottom-color: var(--color-primary);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--color-surface);
    flex-direction: column;
    padding: 24px;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
  }
  
  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .nav-links {
    flex-direction: column;
    width: 100%;
    text-align: center;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero {
    padding-top: 120px;
  }
  
  .url-text {
    font-size: 1rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}