/* 
 * Responsive Framework - Zekt SaaS Landing Page
 * Mobile-first responsive design with flexible grid system
 * Container, layout, and breakpoint utilities
 */

/* ==========================================================================
   Breakpoints and Media Queries
   ========================================================================== */

:root {
  /* Breakpoints */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
  
  /* Container Max Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1400px;
  
  /* Grid Columns */
  --grid-columns: 12;
  --grid-gap: var(--space-md);
}

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

.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* Responsive container sizes */
@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }
}

@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

@media (min-width: 1536px) {
  .container {
    max-width: var(--container-2xl);
  }
}

/* Fluid container (no max-width) */
.container-fluid {
  width: 100%;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* ==========================================================================
   Flexbox Grid System
   ========================================================================== */

.row {
  display: flex;
  flex-wrap: wrap;
  margin-left: calc(var(--grid-gap) * -0.5);
  margin-right: calc(var(--grid-gap) * -0.5);
}

.col {
  flex: 1 0 0%;
  padding-left: calc(var(--grid-gap) * 0.5);
  padding-right: calc(var(--grid-gap) * 0.5);
}

/* Auto-sizing columns */
.col-auto {
  flex: 0 0 auto;
  width: auto;
  padding-left: calc(var(--grid-gap) * 0.5);
  padding-right: calc(var(--grid-gap) * 0.5);
}

/* Fixed width columns (mobile-first) */
.col-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
.col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
.col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-9 { flex: 0 0 75%; max-width: 75%; }
.col-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
.col-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

/* Add padding to all column classes */
[class*="col-"] {
  padding-left: calc(var(--grid-gap) * 0.5);
  padding-right: calc(var(--grid-gap) * 0.5);
}

/* ==========================================================================
   Responsive Columns (sm: 640px+)
   ========================================================================== */

@media (min-width: 640px) {
  .col-sm { flex: 1 0 0%; }
  .col-sm-auto { flex: 0 0 auto; width: auto; }
  .col-sm-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
  .col-sm-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
  .col-sm-3 { flex: 0 0 25%; max-width: 25%; }
  .col-sm-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
  .col-sm-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
  .col-sm-6 { flex: 0 0 50%; max-width: 50%; }
  .col-sm-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
  .col-sm-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
  .col-sm-9 { flex: 0 0 75%; max-width: 75%; }
  .col-sm-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
  .col-sm-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
  .col-sm-12 { flex: 0 0 100%; max-width: 100%; }
}

/* ==========================================================================
   Responsive Columns (md: 768px+)
   ========================================================================== */

@media (min-width: 768px) {
  .col-md { flex: 1 0 0%; }
  .col-md-auto { flex: 0 0 auto; width: auto; }
  .col-md-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
  .col-md-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
  .col-md-3 { flex: 0 0 25%; max-width: 25%; }
  .col-md-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
  .col-md-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
  .col-md-6 { flex: 0 0 50%; max-width: 50%; }
  .col-md-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
  .col-md-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
  .col-md-9 { flex: 0 0 75%; max-width: 75%; }
  .col-md-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
  .col-md-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
  .col-md-12 { flex: 0 0 100%; max-width: 100%; }
}

/* ==========================================================================
   Responsive Columns (lg: 1024px+)
   ========================================================================== */

@media (min-width: 1024px) {
  .col-lg { flex: 1 0 0%; }
  .col-lg-auto { flex: 0 0 auto; width: auto; }
  .col-lg-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
  .col-lg-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
  .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
  .col-lg-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
  .col-lg-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
  .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
  .col-lg-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
  .col-lg-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
  .col-lg-9 { flex: 0 0 75%; max-width: 75%; }
  .col-lg-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
  .col-lg-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
  .col-lg-12 { flex: 0 0 100%; max-width: 100%; }
}

/* ==========================================================================
   Responsive Columns (xl: 1280px+)
   ========================================================================== */

@media (min-width: 1280px) {
  .col-xl { flex: 1 0 0%; }
  .col-xl-auto { flex: 0 0 auto; width: auto; }
  .col-xl-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
  .col-xl-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
  .col-xl-3 { flex: 0 0 25%; max-width: 25%; }
  .col-xl-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
  .col-xl-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
  .col-xl-6 { flex: 0 0 50%; max-width: 50%; }
  .col-xl-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
  .col-xl-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
  .col-xl-9 { flex: 0 0 75%; max-width: 75%; }
  .col-xl-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
  .col-xl-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
  .col-xl-12 { flex: 0 0 100%; max-width: 100%; }
}

/* ==========================================================================
   Display Utilities
   ========================================================================== */

/* Base display utilities */
.d-none { display: none !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.d-grid { display: grid !important; }

/* Responsive display utilities */
@media (min-width: 640px) {
  .d-sm-none { display: none !important; }
  .d-sm-inline { display: inline !important; }
  .d-sm-inline-block { display: inline-block !important; }
  .d-sm-block { display: block !important; }
  .d-sm-flex { display: flex !important; }
  .d-sm-inline-flex { display: inline-flex !important; }
  .d-sm-grid { display: grid !important; }
}

@media (min-width: 768px) {
  .d-md-none { display: none !important; }
  .d-md-inline { display: inline !important; }
  .d-md-inline-block { display: inline-block !important; }
  .d-md-block { display: block !important; }
  .d-md-flex { display: flex !important; }
  .d-md-inline-flex { display: inline-flex !important; }
  .d-md-grid { display: grid !important; }
}

@media (min-width: 1024px) {
  .d-lg-none { display: none !important; }
  .d-lg-inline { display: inline !important; }
  .d-lg-inline-block { display: inline-block !important; }
  .d-lg-block { display: block !important; }
  .d-lg-flex { display: flex !important; }
  .d-lg-inline-flex { display: inline-flex !important; }
  .d-lg-grid { display: grid !important; }
}

/* ==========================================================================
   Flexbox Utilities
   ========================================================================== */

/* Flex Direction */
.flex-row { flex-direction: row !important; }
.flex-row-reverse { flex-direction: row-reverse !important; }
.flex-column { flex-direction: column !important; }
.flex-column-reverse { flex-direction: column-reverse !important; }

/* Flex Wrap */
.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }
.flex-wrap-reverse { flex-wrap: wrap-reverse !important; }

/* Justify Content */
.justify-start { justify-content: flex-start !important; }
.justify-end { justify-content: flex-end !important; }
.justify-center { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.justify-around { justify-content: space-around !important; }
.justify-evenly { justify-content: space-evenly !important; }

/* Align Items */
.align-start { align-items: flex-start !important; }
.align-end { align-items: flex-end !important; }
.align-center { align-items: center !important; }
.align-baseline { align-items: baseline !important; }
.align-stretch { align-items: stretch !important; }

/* Align Content */
.align-content-start { align-content: flex-start !important; }
.align-content-end { align-content: flex-end !important; }
.align-content-center { align-content: center !important; }
.align-content-between { align-content: space-between !important; }
.align-content-around { align-content: space-around !important; }
.align-content-stretch { align-content: stretch !important; }

/* Align Self */
.align-self-auto { align-self: auto !important; }
.align-self-start { align-self: flex-start !important; }
.align-self-end { align-self: flex-end !important; }
.align-self-center { align-self: center !important; }
.align-self-baseline { align-self: baseline !important; }
.align-self-stretch { align-self: stretch !important; }

/* Flex Grow/Shrink */
.flex-grow-0 { flex-grow: 0 !important; }
.flex-grow-1 { flex-grow: 1 !important; }
.flex-shrink-0 { flex-shrink: 0 !important; }
.flex-shrink-1 { flex-shrink: 1 !important; }

/* ==========================================================================
   Spacing Utilities
   ========================================================================== */

/* Margin utilities */
.m-0 { margin: 0 !important; }
.m-auto { margin: auto !important; }
.mx-auto { margin-left: auto !important; margin-right: auto !important; }
.my-auto { margin-top: auto !important; margin-bottom: auto !important; }

.m-xs { margin: var(--space-xs) !important; }
.m-sm { margin: var(--space-sm) !important; }
.m-md { margin: var(--space-md) !important; }
.m-lg { margin: var(--space-lg) !important; }
.m-xl { margin: var(--space-xl) !important; }
.m-2xl { margin: var(--space-2xl) !important; }
.m-3xl { margin: var(--space-3xl) !important; }
.m-4xl { margin: var(--space-4xl) !important; }

/* Directional margins */
.mt-0 { margin-top: 0 !important; }
.mt-xs { margin-top: var(--space-xs) !important; }
.mt-sm { margin-top: var(--space-sm) !important; }
.mt-md { margin-top: var(--space-md) !important; }
.mt-lg { margin-top: var(--space-lg) !important; }
.mt-xl { margin-top: var(--space-xl) !important; }
.mt-2xl { margin-top: var(--space-2xl) !important; }
.mt-3xl { margin-top: var(--space-3xl) !important; }
.mt-4xl { margin-top: var(--space-4xl) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-xs { margin-bottom: var(--space-xs) !important; }
.mb-sm { margin-bottom: var(--space-sm) !important; }
.mb-md { margin-bottom: var(--space-md) !important; }
.mb-lg { margin-bottom: var(--space-lg) !important; }
.mb-xl { margin-bottom: var(--space-xl) !important; }
.mb-2xl { margin-bottom: var(--space-2xl) !important; }
.mb-3xl { margin-bottom: var(--space-3xl) !important; }
.mb-4xl { margin-bottom: var(--space-4xl) !important; }

.ml-0 { margin-left: 0 !important; }
.ml-auto { margin-left: auto !important; }
.mr-0 { margin-right: 0 !important; }
.mr-auto { margin-right: auto !important; }

/* Padding utilities */
.p-0 { padding: 0 !important; }
.p-xs { padding: var(--space-xs) !important; }
.p-sm { padding: var(--space-sm) !important; }
.p-md { padding: var(--space-md) !important; }
.p-lg { padding: var(--space-lg) !important; }
.p-xl { padding: var(--space-xl) !important; }
.p-2xl { padding: var(--space-2xl) !important; }
.p-3xl { padding: var(--space-3xl) !important; }
.p-4xl { padding: var(--space-4xl) !important; }

/* Directional padding */
.pt-0 { padding-top: 0 !important; }
.pt-xs { padding-top: var(--space-xs) !important; }
.pt-sm { padding-top: var(--space-sm) !important; }
.pt-md { padding-top: var(--space-md) !important; }
.pt-lg { padding-top: var(--space-lg) !important; }
.pt-xl { padding-top: var(--space-xl) !important; }
.pt-2xl { padding-top: var(--space-2xl) !important; }
.pt-3xl { padding-top: var(--space-3xl) !important; }
.pt-4xl { padding-top: var(--space-4xl) !important; }

.pb-0 { padding-bottom: 0 !important; }
.pb-xs { padding-bottom: var(--space-xs) !important; }
.pb-sm { padding-bottom: var(--space-sm) !important; }
.pb-md { padding-bottom: var(--space-md) !important; }
.pb-lg { padding-bottom: var(--space-lg) !important; }
.pb-xl { padding-bottom: var(--space-xl) !important; }
.pb-2xl { padding-bottom: var(--space-2xl) !important; }
.pb-3xl { padding-bottom: var(--space-3xl) !important; }
.pb-4xl { padding-bottom: var(--space-4xl) !important; }

.px-0 { padding-left: 0 !important; padding-right: 0 !important; }
.px-xs { padding-left: var(--space-xs) !important; padding-right: var(--space-xs) !important; }
.px-sm { padding-left: var(--space-sm) !important; padding-right: var(--space-sm) !important; }
.px-md { padding-left: var(--space-md) !important; padding-right: var(--space-md) !important; }
.px-lg { padding-left: var(--space-lg) !important; padding-right: var(--space-lg) !important; }
.px-xl { padding-left: var(--space-xl) !important; padding-right: var(--space-xl) !important; }

.py-0 { padding-top: 0 !important; padding-bottom: 0 !important; }
.py-xs { padding-top: var(--space-xs) !important; padding-bottom: var(--space-xs) !important; }
.py-sm { padding-top: var(--space-sm) !important; padding-bottom: var(--space-sm) !important; }
.py-md { padding-top: var(--space-md) !important; padding-bottom: var(--space-md) !important; }
.py-lg { padding-top: var(--space-lg) !important; padding-bottom: var(--space-lg) !important; }
.py-xl { padding-top: var(--space-xl) !important; padding-bottom: var(--space-xl) !important; }

/* ==========================================================================
   Responsive Typography Scale Adjustments
   ========================================================================== */

@media (max-width: 639px) {
  :root {
    --font-size-4xl: 1.875rem;  /* 30px on mobile */
    --font-size-5xl: 2.25rem;   /* 36px on mobile */
    --font-size-6xl: 2.5rem;    /* 40px on mobile */
  }
}

@media (min-width: 1024px) {
  :root {
    --font-size-4xl: 2.5rem;    /* 40px on desktop */
    --font-size-5xl: 3.5rem;    /* 56px on desktop */
    --font-size-6xl: 4.5rem;    /* 72px on desktop */
  }
}