/* ============================================
   Layout Styles - CSS Grid & Flexbox System
   Electric Products Landing Page
   ============================================ */

/* ==========================================
   Container System
   ========================================== */

.container {
  width: 100%;
  max-width: var(--container-7xl);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (width >= 640px) {
  .container {
    padding-inline: var(--space-6);
  }
}

@media (width >= 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

@media (width >= 1024px) {
  .container {
    padding-inline: var(--space-12);
  }
}

.container-sm {
  max-width: var(--container-3xl);
}

.container-md {
  max-width: var(--container-4xl);
}

.container-lg {
  max-width: var(--container-5xl);
}

.container-xl {
  max-width: var(--container-6xl);
}

.container-fluid {
  max-width: 100%;
}

/* ==========================================
   CSS Grid Layout System
   ========================================== */

.grid {
  display: grid;
  gap: var(--space-4);
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-cols-6 {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.grid-cols-12 {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

/* Auto-fit responsive grid */
.grid-auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}

.grid-auto-fill {
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
}

/* Grid gap utilities */
.gap-0 {
  gap: var(--space-0);
}

.gap-2 {
  gap: var(--space-2);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

.gap-8 {
  gap: var(--space-8);
}

.gap-12 {
  gap: var(--space-12);
}

.gap-16 {
  gap: var(--space-16);
}

/* Column and row gaps */
.gap-x-4 {
  column-gap: var(--space-4);
}

.gap-x-6 {
  column-gap: var(--space-6);
}

.gap-x-8 {
  column-gap: var(--space-8);
}

.gap-y-4 {
  row-gap: var(--space-4);
}

.gap-y-6 {
  row-gap: var(--space-6);
}

.gap-y-8 {
  row-gap: var(--space-8);
}

/* Grid column span */
.col-span-1 {
  grid-column: span 1 / span 1;
}

.col-span-2 {
  grid-column: span 2 / span 2;
}

.col-span-3 {
  grid-column: span 3 / span 3;
}

.col-span-4 {
  grid-column: span 4 / span 4;
}

.col-span-6 {
  grid-column: span 6 / span 6;
}

.col-span-12 {
  grid-column: span 12 / span 12;
}

.col-span-full {
  grid-column: 1 / -1;
}

/* Grid row span */
.row-span-1 {
  grid-row: span 1 / span 1;
}

.row-span-2 {
  grid-row: span 2 / span 2;
}

.row-span-3 {
  grid-row: span 3 / span 3;
}

.row-span-full {
  grid-row: 1 / -1;
}

/* Grid alignment */
.place-items-start {
  place-items: start;
}

.place-items-center {
  place-items: center;
}

.place-items-end {
  place-items: end;
}

.place-content-start {
  place-content: start;
}

.place-content-center {
  place-content: center;
}

.place-content-end {
  place-content: end;
}

.place-content-between {
  place-content: space-between;
}

/* ==========================================
   Flexbox Layout System
   ========================================== */

.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

/* Flex direction */
.flex-row {
  flex-direction: row;
}

.flex-row-reverse {
  flex-direction: row-reverse;
}

.flex-col {
  flex-direction: column;
}

.flex-col-reverse {
  flex-direction: column-reverse;
}

/* Flex wrap */
.flex-wrap {
  flex-wrap: wrap;
}

.flex-wrap-reverse {
  flex-wrap: wrap-reverse;
}

.flex-nowrap {
  flex-wrap: nowrap;
}

/* Justify content */
.justify-start {
  justify-content: flex-start;
}

.justify-end {
  justify-content: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

.justify-evenly {
  justify-content: space-evenly;
}

/* Align items */
.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.items-center {
  align-items: center;
}

.items-baseline {
  align-items: baseline;
}

.items-stretch {
  align-items: stretch;
}

/* Align content */
.content-start {
  align-content: flex-start;
}

.content-end {
  align-content: flex-end;
}

.content-center {
  align-content: center;
}

.content-between {
  align-content: space-between;
}

.content-around {
  align-content: space-around;
}

.content-evenly {
  align-content: space-evenly;
}

/* Align self */
.self-auto {
  align-self: auto;
}

.self-start {
  align-self: flex-start;
}

.self-end {
  align-self: flex-end;
}

.self-center {
  align-self: center;
}

.self-stretch {
  align-self: stretch;
}

/* Flex grow and shrink */
.flex-1 {
  flex: 1 1 0%;
}

.flex-auto {
  flex: 1 1 auto;
}

.flex-initial {
  flex: 0 1 auto;
}

.flex-none {
  flex: none;
}

.flex-grow {
  flex-grow: 1;
}

.flex-grow-0 {
  flex-grow: 0;
}

.flex-shrink {
  flex-shrink: 1;
}

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

/* ==========================================
   Responsive Grid Breakpoints (Mobile-First)
   ========================================== */

@media (width >= 640px) {
  .sm\:grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  .sm\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sm\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .sm\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .sm\:col-span-1 {
    grid-column: span 1 / span 1;
  }

  .sm\:col-span-2 {
    grid-column: span 2 / span 2;
  }

  .sm\:col-span-3 {
    grid-column: span 3 / span 3;
  }

  .sm\:col-span-4 {
    grid-column: span 4 / span 4;
  }

  .sm\:flex-row {
    flex-direction: row;
  }

  .sm\:flex-col {
    flex-direction: column;
  }
}

@media (width >= 768px) {
  .md\:grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .md\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .md\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .md\:grid-cols-6 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .md\:col-span-1 {
    grid-column: span 1 / span 1;
  }

  .md\:col-span-2 {
    grid-column: span 2 / span 2;
  }

  .md\:col-span-3 {
    grid-column: span 3 / span 3;
  }

  .md\:col-span-4 {
    grid-column: span 4 / span 4;
  }

  .md\:col-span-6 {
    grid-column: span 6 / span 6;
  }

  .md\:flex-row {
    flex-direction: row;
  }

  .md\:flex-col {
    flex-direction: column;
  }

  .md\:gap-6 {
    gap: var(--space-6);
  }

  .md\:gap-8 {
    gap: var(--space-8);
  }
}

@media (width >= 1024px) {
  .lg\:grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  .lg\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lg\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .lg\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .lg\:grid-cols-6 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .lg\:grid-cols-12 {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .lg\:col-span-1 {
    grid-column: span 1 / span 1;
  }

  .lg\:col-span-2 {
    grid-column: span 2 / span 2;
  }

  .lg\:col-span-3 {
    grid-column: span 3 / span 3;
  }

  .lg\:col-span-4 {
    grid-column: span 4 / span 4;
  }

  .lg\:col-span-6 {
    grid-column: span 6 / span 6;
  }

  .lg\:col-span-8 {
    grid-column: span 8 / span 8;
  }

  .lg\:flex-row {
    flex-direction: row;
  }

  .lg\:flex-col {
    flex-direction: column;
  }

  .lg\:gap-8 {
    gap: var(--space-8);
  }

  .lg\:gap-12 {
    gap: var(--space-12);
  }
}

/* ==========================================
   Navigation Layout Components
   ========================================== */

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

@media (width < 768px) {
  .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-inline-start: auto;
}

/* ==========================================
   Product Grid Layout
   ========================================== */

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--space-6);
  padding-block: var(--space-8);
}

@media (width >= 768px) {
  .product-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
    gap: var(--space-8);
  }
}

@media (width >= 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-12);
  }
}

.product-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.product-card-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.product-card-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.product-card-actions {
  display: flex;
  gap: var(--space-3);
  margin-block-start: auto;
}

/* ==========================================
   Hero Section Layout
   ========================================== */

.hero-section {
  display: grid;
  min-height: max(500px, 60vh);
  place-items: center;
  padding-block: var(--space-16);
}

@media (width >= 768px) {
  .hero-section {
    min-height: max(600px, 70vh);
    padding-block: var(--space-24);
  }
}

@media (width >= 1024px) {
  .hero-section {
    min-height: max(700px, 80vh);
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  max-width: 65ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-block-start: var(--space-4);
}

/* ==========================================
   Section Layout
   ========================================== */

.section {
  padding-block: var(--space-16);
}

@media (width >= 768px) {
  .section {
    padding-block: var(--space-20);
  }
}

@media (width >= 1024px) {
  .section {
    padding-block: var(--space-24);
  }
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-block-end: var(--space-12);
  text-align: center;
}

.section-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

/* ==========================================
   Footer Layout
   ========================================== */

/* Footer */
.footer {
  background: linear-gradient(180deg, #1a1a1a 0%, #0a0a0a 100%);
  color: #ffffff;
  padding: 2rem 0;
  margin-top: auto;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #2196f3, transparent);
}

.footer-content {
  display: none;
}

.footer-bottom {
  padding: 2rem 0;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
}

.footer-bottom p {
  margin: 0;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.3px;
  text-align: center;
}

.footer-bottom time {
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .footer {
    padding: 1.5rem 0;
  }

  .footer-bottom {
    padding: 1.5rem 0;
  }

  .footer-bottom p {
    font-size: 0.875rem;
  }
}

/* ==========================================
   Utility Layout Classes
   ========================================== */

.stack {
  display: flex;
  flex-direction: column;
}

.stack-sm {
  gap: var(--space-2);
}

.stack-md {
  gap: var(--space-4);
}

.stack-lg {
  gap: var(--space-6);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.center {
  display: grid;
  place-items: center;
}

.sidebar-layout {
  display: grid;
  gap: var(--space-6);
}

@media (width >= 1024px) {
  .sidebar-layout {
    grid-template-columns: 300px 1fr;
    gap: var(--space-12);
  }
}

.split {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

@media (width >= 768px) {
  .split {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}