/* ============================================
   NAMSEZANA TRADING & PROJECTS
   Layout CSS - Grid, Flexbox & Containers
   ============================================ */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--section-padding-x);
  padding-right: var(--section-padding-x);
}

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

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

/* Section Base */
.section {
  position: relative;
  padding: var(--section-padding-y) 0;
  overflow: hidden;
}

.section-header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem); /* Mathematical content gap */
}

.section-header .section-label {
  margin-bottom: var(--space-3);
  display: block;
}

.section-header .section-title {
  margin-bottom: var(--space-4);
}

.section-header .section-subtitle {
  margin-top: var(--space-4);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-header.text-left .section-subtitle {
  margin-left: 0;
}

.section-dark {
  background-color: var(--industrial-dark);
  color: var(--operational-white);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4,
.section-dark h5,
.section-dark h6 {
  color: var(--operational-white);
}

.section-primary {
  background-color: var(--primary-blue);
  color: var(--operational-white);
}

.section-primary h1,
.section-primary h2,
.section-primary h3,
.section-primary h4,
.section-primary h5,
.section-primary h6 {
  color: var(--operational-white);
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

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

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

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

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

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

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

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

.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-1 {
  flex: 1 1 0%;
}

.flex-auto {
  flex: 1 1 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); }
.gap-10 { gap: var(--space-10); }
.gap-12 { gap: var(--space-12); }
.gap-16 { gap: var(--space-16); }
.gap-20 { gap: var(--space-20); }

/* Grid Utilities */
.grid {
  display: grid;
}

.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-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

.grid-rows-1 { grid-template-rows: repeat(1, minmax(0, 1fr)); }
.grid-rows-2 { grid-template-rows: repeat(2, minmax(0, 1fr)); }
.grid-rows-3 { grid-template-rows: repeat(3, minmax(0, 1fr)); }

/* Common Layout Patterns */
.two-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 768px) {
  .two-col {
    grid-template-columns: 1fr 1fr;
  }
}

.three-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .three-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .three-col {
    grid-template-columns: repeat(3, 1fr);
  }
}

.four-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .four-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .four-col {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Spacing Utilities */
.m-0 { margin: 0; }
.m-1 { margin: var(--space-1); }
.m-2 { margin: var(--space-2); }
.m-4 { margin: var(--space-4); }
.m-6 { margin: var(--space-6); }
.m-8 { margin: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }
.mt-20 { margin-top: var(--space-20); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }
.mb-20 { margin-bottom: var(--space-20); }

.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }

.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }

.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }
.px-8 { padding-left: var(--space-8); padding-right: var(--space-8); }

/* Width & Height */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-screen { width: 100vw; }

.h-full { height: 100%; }
.h-auto { height: auto; }
.h-screen { height: 100vh; }
.min-h-screen { min-height: 100vh; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }

.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

/* Z-Index */
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

/* Display */
.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.hidden { display: none; }

/* Visibility */
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Text Transform */
.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

/* Font Weight */
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Text Color */
.text-white { color: white; }
.text-primary { color: var(--primary-blue); }
.text-yellow { color: var(--safety-yellow); }
.text-gray { color: var(--gray-600); }
.text-dark { color: var(--industrial-dark); }

/* Background Color */
.bg-white { background-color: white; }
.bg-primary { background-color: var(--primary-blue); }
.bg-dark { background-color: var(--industrial-dark); }
.bg-light { background-color: var(--operational-white); }
.bg-yellow { background-color: var(--safety-yellow); }

/* Border Radius */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Responsive Utilities */
@media (min-width: 640px) {
  .sm\\:flex { display: flex; }
  .sm\\:grid { display: grid; }
  .sm\\:hidden { display: none; }
  .sm\\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Scroll Snap Utilities */
.snap-container {
  scroll-snap-type: y proximity;
  scroll-padding-top: 100px; /* Account for navbar */
}

@media (min-width: 1024px) {
  .snap-container {
    scroll-snap-type: y mandatory;
  }
}

.snap-section {
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

/* Scroll Progress Indicator */
.scroll-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(var(--palette-blue-deep-rgb), 0.1);
  z-index: 2000; /* Above navbar */
  pointer-events: none;
}

.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--safety-yellow);
  transition: width 100ms linear;
  box-shadow: 0 0 10px rgba(255, 193, 7, 0.4);
}

@media (min-width: 768px) {
  .md\\:flex { display: flex; }
  .md\\:grid { display: grid; }
  .md\\:hidden { display: none; }
  .md\\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .lg\\:flex { display: flex; }
  .lg\\:grid { display: grid; }
  .lg\\:hidden { display: none; }
  .lg\\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1280px) {
  .xl\\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .xl\\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .xl\\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}