/* NIAPAY - B2B2C Marketplace Styles */
/* Professional, high-value furniture & home focus */

:root {
  --color-bg: #0a0a0a;
  --color-surface: #141414;
  --color-text: #f5f5f5;
  --color-text-muted: #a3a3a3;
  --color-accent: #d4a853;
  --color-accent-hover: #e5b96a;
  --color-border: #262626;
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 400;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Layout */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* Header / Nav */
/* Header / Nav */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  /* background & backdrop-filter moved to ::before to avoid containing block for fixed children */
  border-bottom: 1px solid #e5e5e5;
  transition: all 0.3s ease;
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  z-index: 1001;
  display: flex;
  align-items: center;
}

.logo img {
  height: 100px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  color: #555;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #000;
}

/* Mobile Menu Button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
  padding: var(--space-xs);
  flex-direction: column;
  gap: 6px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #000;
  transition: all 0.3s ease;
}

/* Responsive Navigation */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #ffffff;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: var(--space-xl);
    z-index: 999;
    padding: calc(72px + var(--space-2xl)) var(--space-xl) var(--space-xl);
    overflow-y: auto;
    display: none;
    /* Hide by default */
  }

  .nav-links.active {
    display: flex;
    /* Show when active */
  }

  .nav-links a {
    font-size: 1.75rem;
    /* Make links larger */
    font-family: var(--font-display);
    color: #0d0d0d;
    text-decoration: none;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    /* Subtle separator */
    padding-bottom: var(--space-md);
  }

  /* Hamburger Animation */
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
    background-color: #000;
  }

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

  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
    background-color: #000;
  }

  body.nav-open {
    overflow: hidden;
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-3xl);
  align-items: center;
  padding: calc(72px + var(--space-3xl)) var(--space-xl) var(--space-3xl);
  background: var(--color-bg);
}

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

.hero-headline {
  margin-bottom: var(--space-lg);
}

.hero-subheadline {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2xl);
}

.hero-visual {
  aspect-ratio: 4/3;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Nia-Calculator Sidebar */
.nia-calculator {
  position: sticky;
  top: calc(72px + var(--space-xl));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.nia-calculator h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.nia-calculator-input {
  margin-bottom: var(--space-lg);
}

.nia-calculator-input label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.nia-calculator-input input {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1rem;
}

.nia-calculator-input input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.nia-timeline {
  margin: var(--space-lg) 0;
}

.nia-timeline-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.nia-timeline-item:last-child {
  border-bottom: none;
}

.nia-timeline-date {
  color: var(--color-text-muted);
}

.nia-timeline-amount {
  font-weight: 600;
}

.btn-unlock {
  display: block;
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-accent);
  color: var(--color-bg);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  text-align: center;
}

.btn-unlock:hover {
  background: var(--color-accent-hover);
}

/* How It Works */
.how-it-works {
  padding: var(--space-3xl) 0;
  background: var(--color-surface);
}

.how-it-works h2 {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  max-width: 900px;
  margin: 0 auto;
}

.step {
  text-align: center;
}

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--color-accent);
  opacity: 0.5;
  margin-bottom: var(--space-sm);
}

.step h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

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

/* Use NIAPAY Anywhere */
/* Use NIAPAY Anywhere */
.use-niapay {
  padding: var(--space-3xl) 0;
  background: var(--color-bg);
}

.use-niapay-container {
  max-width: 1200px;
}

.use-niapay h2 {
  text-align: center;
  margin-bottom: var(--space-md);
  font-weight: 500;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
}

.use-niapay-intro {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
  line-height: 1.6;
}

.shop-channels {
  display: flex;
  gap: var(--space-xl);
  /* Ensure the container has enough height or let it adapt, but flex is better for width animation */
  align-items: flex-start;
}

.channel {
  display: flex;
  flex-direction: column;
  padding: 0;
  background: transparent;
  border: none;
  text-decoration: none;
  color: inherit;
  /* Flex settings for expansion */
  flex: 1;
  min-width: 0;
  transition: flex 0.5s cubic-bezier(0.25, 1, 0.5, 1), transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.channel:hover {
  flex: 1.5;
  /* Expand width on hover */
  transform: translateY(-4px);
  /* Keep the lift, removed scale to avoid conflict with flex expansion */
}

/* Ensure the image container has a fixed height so changing width doesn't shift layout vertically */
.channel-image {
  width: 100%;
  height: 400px;
  /* Fixed height for consistency during width expansion */
  border-radius: 32px;
  overflow: hidden;
  background: var(--color-surface);
  margin-bottom: var(--space-lg);
  position: relative;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.4s ease;
}

.channel:hover .channel-image {
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.channel-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
  /* Crop bottom 40px to hide watermark */
  clip-path: inset(0 0 40px 0 round 32px);
  /* Adjust margin/height if needed, but since it's cover fit in container, 
     we rely on the clip inside the container. 
     Note: Since parent has overflow:hidden, we just scale/position to ensure 
     bottom is cut off visually or use clip-path inside. 
     Using object-position could also work: object-position: center top; 
     But let's stick to clipping if the image has the watermark AT the bottom.
  */
  margin-bottom: -40px;
  height: calc(100% + 40px);
  /* Extend height so we clip the bad part */
}

.channel:hover .channel-image img {
  transform: scale(1.05);
}

.channel-content {
  padding: 0 var(--space-sm);
  text-align: left;
}

.channel h3 {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
  font-family: var(--font-display);
}

.channel p {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

.channel-cta {
  display: inline-flex;
  align-items: center;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.3);
  text-underline-offset: 4px;
  transition: all 0.2s;
}

.channel:hover .channel-cta {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

/* Responsive Use NIAPAY */
@media (max-width: 900px) {
  .shop-channels {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2xl);
  }

  .channel {
    flex: none;
    width: 100%;
  }

  .channel:hover {
    flex: none;
    transform: none;
  }

  .channel-image {
    height: 280px;
  }

  /* Reset hover expansion */
  .channel:hover .channel-image img {
    transform: scale(1.02);
  }
}


/* Shoppers' favorite way to pay */
.payment-options {
  padding: var(--space-3xl) 0;
  background: var(--color-surface);
}

.payment-options h2 {
  text-align: center;
  margin-bottom: var(--space-md);
  font-weight: 600;
}

.payment-options-intro {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto var(--space-3xl);
  line-height: 1.6;
}

.payment-options-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.payment-nav {
  position: sticky;
  top: calc(72px + var(--space-xl));
}

.payment-nav-arrows {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.nav-arrow {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1rem;
  cursor: pointer;
}

.nav-arrow:hover:not(:disabled) {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.nav-arrow:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.payment-nav-list {
  list-style: none;
}

.payment-nav-list li {
  margin-bottom: var(--space-xs);
}

.payment-nav-item {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-family: var(--font-body);
  text-align: left;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}

.payment-nav-item:hover {
  color: var(--color-text);
}

.payment-nav-item.active {
  color: var(--color-text);
  font-weight: 600;
  background: rgba(212, 168, 83, 0.1);
}

.payment-cards {
  display: flex;
  gap: var(--space-xl);
  overflow-x: auto;
  padding-bottom: var(--space-md);
  scroll-snap-type: x mandatory;
}

.payment-card {
  flex: 0 0 calc(100% - 0px);
  scroll-snap-align: start;
}

.payment-card:not(.active) {
  display: none;
}

.payment-card.active {
  display: block;
}

.payment-card-inner {
  display: flex;
  gap: var(--space-2xl);
  padding: var(--space-2xl);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  min-height: 320px;
}

.payment-card-visual {
  flex-shrink: 0;
  width: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.payment-card-visual img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  /* Crop the bottom 45px to hide date/watermark */
  clip-path: inset(0 0 45px 0 round var(--radius-lg));
  /* Use drop-shadow filter so shadow follows the clipped shape */
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.1));
  transition: transform 0.3s ease;
  margin-bottom: -45px;
  /* Reclaim space */
  background: #fff;
}

.payment-card:hover .payment-card-visual img {
  transform: scale(1.03);
}

.payment-card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.payment-card-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.payment-card-content p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.btn-learn-more {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
  align-self: flex-start;
}

.btn-learn-more:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

@media (max-width: 900px) {
  .payment-options-layout {
    grid-template-columns: 1fr;
  }

  .payment-nav {
    position: static;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-md);
  }

  .payment-nav-arrows {
    margin-bottom: 0;
  }

  .payment-nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .payment-card-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .payment-card-content {
    align-items: center;
  }

  .btn-learn-more {
    align-self: center;
  }
}

/* Footer */
.site-footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-column h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: var(--space-sm);
}

.footer-column a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-column a:hover {
  color: var(--color-text);
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Page Headers */
.page-header {
  padding: calc(72px + var(--space-3xl)) 0 var(--space-2xl);
  text-align: center;
}

.page-header h1 {
  margin-bottom: var(--space-md);
}

.page-header p {
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* Marketplace Search */
.search-section {
  padding: var(--space-2xl) 0;
}

.search-box {
  max-width: 560px;
  margin: 0 auto var(--space-2xl);
}

.search-box input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1rem;
}

.search-box input::placeholder {
  color: var(--color-text-muted);
}

.categories {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

.category-chip {
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.category-chip:hover,
.category-chip.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Merchant Cards */
.merchant-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.merchant-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s;
}

.merchant-card:hover {
  border-color: var(--color-accent);
}

.merchant-card-image {
  aspect-ratio: 16/9;
  background: var(--color-bg);
}

.merchant-card-body {
  padding: var(--space-lg);
}

.merchant-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.merchant-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ROI Calculator (Merchants page) */
.roi-calculator {
  max-width: 480px;
  margin: var(--space-2xl) auto;
  padding: var(--space-2xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.roi-calculator h3 {
  margin-bottom: var(--space-lg);
}

.roi-slider {
  width: 100%;
  margin: var(--space-lg) 0;
  accent-color: var(--color-accent);
}

.roi-result {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  text-align: center;
}

.roi-result-value {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-accent);
}

/* Support Portal */
.support-form {
  max-width: 400px;
  margin: var(--space-2xl) auto;
}

.support-form input {
  width: 100%;
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
}

/* Developers / Code blocks */
.code-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875rem;
  margin: var(--space-md) 0;
}

.code-block code {
  color: var(--color-text);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: none;
  }

  .nia-calculator {
    position: static;
    max-width: 400px;
    margin: 0 auto;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .shop-channels {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

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