/*
 * idesignweb Layout and Structural Grids
 * Visual Reference: Flat hairline bordered grids, full-bleed hero, 3-stat row,
 * numbered process steps, zero gradients, zero shadows.
 */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.container-fluid {
  width: 100%;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

/* Site Header */
.site-header {
  height: var(--header-height);
  border-bottom: 1px solid var(--border-hairline);
  background-color: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.brand-mark {
  font-family: var(--font-sans);
  font-size: var(--text-h3);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.brand-mark:hover {
  color: var(--text-main);
}

.brand-sub {
  font-family: var(--font-sans);
  font-size: var(--text-tiny);
  font-weight: var(--weight-regular);
  color: var(--text-muted);
  border-left: 1px solid var(--border-hairline);
  padding-left: 8px;
  margin-left: 4px;
}

/* Navigation Links */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  font-size: var(--text-small);
  font-weight: var(--weight-regular);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  padding: 8px 0;
}

.nav-link:hover {
  color: var(--text-main);
}

.nav-link.active {
  color: var(--text-main);
  font-weight: var(--weight-bold);
  border-bottom: 2px solid var(--text-main);
}

.nav-numeral {
  font-family: var(--font-sans);
  font-size: var(--text-tiny);
  color: var(--text-dim);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-hairline);
  padding: 8px 12px;
  font-family: var(--font-sans);
  font-size: var(--text-small);
  font-weight: var(--weight-bold);
  cursor: pointer;
}

/* Hero Section (Modeled on Clean Full-Bleed Structure) */
.hero-section {
  padding: var(--space-3xl) 0 var(--space-2xl) 0;
  border-bottom: 1px solid var(--border-hairline);
  background-color: var(--bg-primary);
}

.hero-meta {
  font-family: var(--font-sans);
  font-size: var(--text-small);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-headline {
  font-size: var(--text-display);
  font-weight: var(--weight-bold);
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 960px;
  margin-bottom: var(--space-xl);
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 720px;
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Hero Showcase Device Presentation */
.hero-showcase {
  margin-top: var(--space-2xl);
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  padding: var(--space-md);
  overflow: hidden;
}

.hero-showcase-inner {
  border: 1px solid var(--border-hairline);
  overflow: hidden;
  background-color: var(--bg-primary);
}

.hero-showcase-img {
  width: 100%;
  height: auto;
  display: block;
}

/* 3-Stat Metric Row Section */
.stats-section {
  border-bottom: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-left: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
}

.stat-item {
  padding: var(--space-2xl) var(--space-xl);
  border-right: 1px solid var(--border-hairline);
  background-color: var(--bg-primary);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.stat-item:last-child {
  border-right: none;
}

.stat-metric {
  font-family: var(--font-sans);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: var(--weight-bold);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: var(--text-small);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* Section Shells */
.section {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--border-hairline);
}

.section-alt {
  background-color: var(--bg-surface);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: var(--space-lg);
}

.section-title-wrap {
  max-width: 640px;
}

.section-numeral {
  font-family: var(--font-sans);
  font-size: var(--text-small);
  font-weight: var(--weight-bold);
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.section-title {
  font-size: var(--text-h2);
  margin-bottom: 0;
}

/* Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

/* Numbered Process List */
.process-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border-hairline);
}

.process-item {
  padding: var(--space-xl);
  border-right: 1px solid var(--border-hairline);
  background-color: var(--bg-primary);
}

.process-item:last-child {
  border-right: none;
}

.process-item-numeral {
  font-family: var(--font-sans);
  font-size: var(--text-h3);
  font-weight: var(--weight-bold);
  color: var(--text-main);
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-md);
}

.process-item-title {
  font-size: var(--text-h3);
  margin-bottom: var(--space-sm);
}

.process-item-desc {
  font-size: var(--text-small);
  color: var(--text-muted);
  line-height: 1.6;
}

/* Portal Layout Structure */
.portal-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - var(--header-height));
}

.portal-sidebar {
  border-right: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  padding: var(--space-xl) var(--space-lg);
}

.portal-main {
  padding: var(--space-2xl);
  background-color: var(--bg-primary);
}

.portal-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.portal-nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  font-size: var(--text-small);
  font-weight: var(--weight-regular);
  color: var(--text-muted);
  border: 1px solid transparent;
}

.portal-nav-item:hover {
  background-color: var(--bg-primary);
  border-color: var(--border-hairline);
  color: var(--text-main);
}

.portal-nav-item.active {
  background-color: var(--bg-primary);
  border-color: var(--border-hairline-strong);
  font-weight: var(--weight-bold);
  color: var(--text-main);
}

/* Site Footer */
.site-footer {
  border-top: 1px solid var(--border-hairline);
  background-color: var(--bg-primary);
  padding: var(--space-3xl) 0 var(--space-2xl) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer-col-title {
  font-family: var(--font-sans);
  font-size: var(--text-tiny);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: var(--space-xs);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  font-size: var(--text-small);
  color: var(--text-muted);
}

.footer-link:hover {
  color: var(--text-main);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-hairline);
  padding-top: var(--space-lg);
  font-size: var(--text-tiny);
  color: var(--text-dim);
  font-family: var(--font-sans);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .process-list {
    grid-template-columns: 1fr;
  }
  .process-item {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }
  .stats-row {
    grid-template-columns: 1fr;
  }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .portal-layout {
    grid-template-columns: 1fr;
  }
  .portal-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .main-nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-hairline);
    padding: var(--space-lg);
    gap: var(--space-md);
  }
  .mobile-nav-toggle {
    display: block;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}