/**
 * PennyBot Layouts CSS v1.0.0
 *
 * Page structure, containers, grids, and flex layouts.
 * Depends on design-tokens.css for variables.
 *
 * Contents:
 * 1. Global Reset & Base Styles
 * 2. Containers
 * 3. Grid Systems
 * 4. Flex Layouts
 * 5. Sections
 * 6. Responsive Utilities
 */

/* ============================================
   1. GLOBAL RESET & BASE STYLES
   ============================================ */

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-text-default);
  background-color: var(--color-bg-subtle);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-accent);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-default);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-md); }
h6 { font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); }

p {
  margin-bottom: var(--space-4);
}

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

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

/* ============================================
   2. CONTAINERS
   ============================================ */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-sm {
  max-width: 800px;
}

.container-md {
  max-width: 1000px;
}

.container-lg {
  max-width: 1600px;
}

.container-fluid {
  max-width: 100%;
  padding: 0 var(--space-6);
}

/* ============================================
   3. GRID SYSTEMS
   ============================================ */

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

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

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

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

/* Alternative column syntax */
.grid-2-col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.grid-3-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

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

/* Auto-fit responsive grid */
.grid-auto-fit {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}

.grid-auto-fill {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}

/* Stats Grid - specific layout for stat cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

/* Responsive grid breakpoints */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-2-col,
  .grid-3-col,
  .grid-4-col {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   4. FLEX LAYOUTS
   ============================================ */

.flex {
  display: flex;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

/* Flex items */
.flex-1 {
  flex: 1;
}

.flex-auto {
  flex: auto;
}

.flex-none {
  flex: none;
}

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

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

/* Gap utilities */
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ============================================
   5. SECTIONS
   ============================================ */

.section {
  padding: var(--space-8) 0;
}

.section-sm {
  padding: var(--space-4) 0;
}

.section-lg {
  padding: var(--space-12) 0;
}

/* Main content area */
.main-content {
  min-height: calc(100vh - 80px);
  padding: var(--space-6);
}

/* Page wrapper */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Two-column layout */
.layout-two-col {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-6);
}

/* Sidebar layout */
.layout-sidebar {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: var(--space-6);
  min-height: 100vh;
}

.sidebar {
  background: var(--color-bg-base);
  border-right: 1px solid var(--color-border-default);
  padding: var(--space-5);
}

.main-area {
  padding: var(--space-6);
}

@media (max-width: 1024px) {
  .layout-two-col,
  .layout-sidebar {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--color-border-default);
  }
}

/* ============================================
   6. RESPONSIVE UTILITIES
   ============================================ */

/* Display at breakpoints */
@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }

  body {
    font-size: var(--font-size-sm);
  }

  h1 { font-size: var(--font-size-2xl); }
  h2 { font-size: var(--font-size-xl); }
  h3 { font-size: var(--font-size-lg); }

  .container {
    padding: 0 var(--space-4);
  }
}

@media (min-width: 769px) {
  .hide-desktop {
    display: none !important;
  }
}

@media (max-width: 480px) {
  .hide-small {
    display: none !important;
  }
}

/* Stack on mobile */
.stack-mobile {
  display: flex;
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .stack-mobile {
    flex-direction: column;
  }
}