/* ============================================
   MOBILE-FIRST LAYOUT SYSTEM
   Clean, predictable spacing and layout
   ============================================ */

/* Container System - Mobile First */
.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-4);  /* 16px mobile */
  box-sizing: border-box;
}

/* Tablet Container */
@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);  /* 24px tablet */
  }
}

/* Desktop Container */
@media (min-width: 1024px) {
  .container {
    max-width: 1200px;
    padding: 0 var(--space-8);  /* 32px desktop */
  }
}

/* Section Spacing - Mobile First */
section {
  padding: var(--space-12) 0;  /* 48px mobile */
  position: relative;
}

@media (min-width: 768px) {
  section {
    padding: var(--space-16) 0;  /* 64px tablet */
  }
}

@media (min-width: 1024px) {
  section {
    padding: var(--space-20) 0;  /* 80px desktop */
  }
}

/* Grid Systems - Mobile First */
.grid-2,
.grid-3,
.grid-4,
.grid-auto {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr; /* Mobile: single column */
}

/* Tablet Enhancement */
@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

/* Desktop Enhancement */
@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

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

/* Gap Utilities */
.gap-sm { gap: 0.5rem; }
.gap-md { gap: 1rem; }
.gap-lg { gap: 1.5rem; }
.gap-xl { gap: 2rem; }
.gap-2xl { gap: 3rem; }

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

/* Section Headers - Mobile First */
.section-header {
  text-align: center;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .section-header {
    margin-bottom: 3rem;
  }
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
  text-align: center;
  text-wrap: balance;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
  }
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 2px;
  margin: 0.75rem auto 0;
}

.section-subtitle {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-gray-600);
  text-align: center;
  margin: 0 auto 2rem;
}

@media (min-width: 768px) {
  .section-subtitle {
    font-size: 1.25rem;
    max-width: 800px;
    margin-bottom: 3rem;
  }
}

/* Footer Layout - Mobile First */
.footer-main {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-gray-800);
}

@media (min-width: 768px) {
  .footer-main {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 3rem;
  }
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .footer-links {
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
  }
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  text-align: center;
  gap: 1rem;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
}