/* ============================================================
   layout.css — Grid, Flexbox, Containers & Page Structure
   ============================================================ */

/* ===================== CONTAINERS ===================== */

.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 28px;
  padding-right: 28px;
}

@media (min-width: 640px)  { .container { padding-left: 32px; padding-right: 32px; } }
@media (min-width: 1024px) { .container { padding-left: 48px; padding-right: 48px; } }

.container-narrow {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 28px;
}

.container-wide {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ===================== PAGE WRAPPER ===================== */

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Main content shifts right on desktop for sidebar */
.main-content {
  flex: 1;
  padding-top: 72px; /* nav height */
}

@media (min-width: 1024px) {
  .main-content { padding-right: 64px; padding-left: 64px; } /* sidebar balance */
}

/* ===================== SECTIONS ===================== */

.page-section {
  display: none;
  min-height: calc(100vh - 72px);
}

.page-section.active {
  display: block;
  animation: fadeInUp 0.45s var(--ease-smooth) both;
}

/* Section spacing */
.section       { padding: 80px 0; }
.section-lg    { padding: 112px 0; }
.section-xl    { padding: 144px 0; }
.section-tight { padding: 48px 0; }

@media (max-width: 767px) {
  .section       { padding: 48px 0; }
  .section-lg    { padding: 64px 0; }
  .section-xl    { padding: 80px 0; }
  
  .section-header {
    padding-left: 12px;
    padding-right: 12px;
  }
}

/* ===================== GRID SYSTEM ===================== */

.grid { display: grid; }

/* Auto-responsive grids */
.grid-auto-sm { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.grid-auto-md { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.grid-auto-lg { grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 24px; }

/* Fixed column grids */
.grid-2  { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3  { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4  { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }

/* Responsive overrides */
@media (max-width: 767px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
@media (min-width: 768px) and (max-width: 1023px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* Column spans for grid-12 */
.col-1  { grid-column: span 1; }
.col-2  { grid-column: span 2; }
.col-3  { grid-column: span 3; }
.col-4  { grid-column: span 4; }
.col-5  { grid-column: span 5; }
.col-6  { grid-column: span 6; }
.col-7  { grid-column: span 7; }
.col-8  { grid-column: span 8; }
.col-9  { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

@media (max-width: 767px) {
  .grid-2, .grid-3, .grid-4, .grid-12 { grid-template-columns: 1fr; }
  [class*="col-"] { grid-column: span 12 !important; }
}
@media (min-width: 768px) and (max-width: 1023px) {
  .col-3, .col-4 { grid-column: span 6; }
  .col-8, .col-9 { grid-column: span 12; }
}

/* Row spans */
.row-2 { grid-row: span 2; }

/* ===================== FLEXBOX UTILITIES ===================== */

.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.flex-wrap    { flex-wrap: wrap; }
.items-start  { align-items: flex-start; }
.items-center { align-items: center; }
.items-end    { align-items: flex-end; }
.justify-start   { justify-content: flex-start; }
.justify-center  { justify-content: center; }
.justify-end     { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.flex-1       { flex: 1; }
.shrink-0     { flex-shrink: 0; }

/* Gap utilities */
.gap-xs  { gap: 4px; }
.gap-sm  { gap: 8px; }
.gap-md  { gap: 16px; }
.gap-lg  { gap: 24px; }
.gap-xl  { gap: 40px; }
.gap-2xl { gap: 64px; }

/* ===================== SPACING UTILITIES ===================== */

/* Margin */
.mt-auto  { margin-top: auto; }
.mb-auto  { margin-bottom: auto; }
.ml-auto  { margin-left: auto; }
.mr-auto  { margin-right: auto; }
.mx-auto  { margin-left: auto; margin-right: auto; }

/* Padding */
.p-sm  { padding: 8px; }
.p-md  { padding: 16px; }
.p-lg  { padding: 24px; }
.p-xl  { padding: 32px; }
.p-2xl { padding: 48px; }

/* ===================== POSITION UTILITIES ===================== */

.relative { position: relative; }
.absolute { position: absolute; }
.fixed    { position: fixed; }
.sticky   { position: sticky; top: 72px; }
.inset-0  { inset: 0; }
.z-0      { z-index: 0; }
.z-10     { z-index: 10; }

/* ===================== SIZE UTILITIES ===================== */

.w-full   { width: 100%; }
.h-full   { height: 100%; }
.min-h-screen { min-height: 100vh; }
.min-h-hero   { min-height: calc(100vh - 72px); }
.aspect-sq    { aspect-ratio: 1 / 1; }
.aspect-video { aspect-ratio: 16 / 9; }

/* ===================== OVERFLOW ===================== */
.overflow-hidden { overflow: hidden; }
.overflow-x-hidden { overflow-x: hidden; }

/* ===================== DISPLAY ===================== */
.hidden  { display: none !important; }
.block   { display: block; }
.inline  { display: inline; }
.inline-flex { display: inline-flex; }

/* Responsive visibility */
@media (max-width: 767px)  { .hide-mobile { display: none; } }
@media (min-width: 768px)  { .show-mobile { display: none; } }
@media (min-width: 1024px) { .hide-desktop { display: none; } }

/* ===================== BENTO GRID LAYOUTS ===================== */

/* Home Featured Projects */
.bento-featured {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto;
  gap: 20px;
}

@media (min-width: 768px) {
  .bento-featured {
    grid-template-columns: repeat(12, 1fr);
  }
  .bento-featured__main { grid-column: span 7; min-height: 400px; }
  .bento-featured__side { grid-column: span 5; display: grid; grid-template-rows: 1fr 1fr; gap: 20px; }
}

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--surface-mid);
}

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

/* Stack asymmetric */
.stack-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .stack-grid { grid-template-columns: repeat(12, 1fr); }
  .stack-grid__main   { grid-column: span 8; }
  .stack-grid__tall   { grid-column: span 4; grid-row: span 2; }
  .stack-grid__bottom { grid-column: span 8; }
  .stack-grid__full   { grid-column: span 12; }
}

/* Mission section */
.mission-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 80px;
  align-items: center;
}

@media (min-width: 1024px) {
  .mission-grid { grid-template-columns: 1fr 1fr; }
}

/* Connect form */
.connect-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 1024px) {
  .connect-grid { 
    grid-template-columns: 7fr 5fr; 
    align-items: start;
  }
}

/* 2-col form row */
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

/* ===================== TEXT ALIGNMENT ===================== */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

@media (max-width: 767px) { .text-center-mobile { text-align: center; } }

/* ===================== 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-pill); }

/* ===================== FLOATING HERO TAGS ===================== */

.tag-float {
  position: absolute;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-family: var(--font-headline);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
  z-index: 2;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.05);
}

.tag-float-1 { top: -10px; right: -10px; color: var(--primary-container); }
.tag-float-2 { top: 30%; left: -70px; color: var(--secondary); }
.tag-float-3 { bottom: 10px; right: -50px; color: var(--tertiary-fixed); }
.tag-float-4 { bottom: -16px; left: 0px; color: var(--primary); }

@media (max-width: 767px) {
  .tag-float {
    font-size: 0.5rem;
    padding: 6px 10px;
  }
  .tag-float-1 { top: -14px; right: -4px; }
  .tag-float-2 { top: 15%; left: -32px; }
  .tag-float-3 { bottom: 6px; right: -24px; }
  .tag-float-4 { bottom: -18px; left: -10px; }
}

/* Force specific classes if they were using hide-mobile globally */
@media (max-width: 767px) {
  .hide-mobile:not(.tag-float) { display: none; }
}

@media (min-width: 1024px) {
  .hide-mobile { display: block; }
}