/* =============================================================
   base.css — CSS custom properties, reset, typography, utilities
   TKE Zeta Phi Foundation
   ============================================================= */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  /* Colors */
  --color-red:        #A8192E;
  --color-red-dark:   #8B1325;
  --color-gray:       #787276;
  --color-gray-light: #D4D0CF;
  --color-cream:      #FAF7F2;
  --color-dark:       #1A1A1A;
  --color-white:      #FFFFFF;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Lato', 'Source Sans 3', system-ui, sans-serif;

  --text-xs:   0.75rem;   /*  12px */
  --text-sm:   0.875rem;  /*  14px */
  --text-base: 1rem;      /*  16px */
  --text-lg:   1.125rem;  /*  18px */
  --text-xl:   1.25rem;   /*  20px */
  --text-2xl:  1.5rem;    /*  24px */
  --text-3xl:  1.875rem;  /*  30px */
  --text-4xl:  2.25rem;   /*  36px */
  --text-5xl:  3rem;      /*  48px */
  --text-6xl:  3.75rem;   /*  60px */

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1200px;
  --container-pad: 1.5rem;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.10);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Nav height (used for scroll-margin-top) */
  --nav-height: 70px;
}

/* ── CSS Reset / Normalize ──────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-red);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-red-dark);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ── Base Typography ────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl);  }
h6 { font-size: var(--text-lg);  }

@media (max-width: 768px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }
}

@media (max-width: 480px) {
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  h3 { font-size: var(--text-xl);  }
}

p {
  margin-bottom: var(--space-4);
  max-width: 70ch;
}

p:last-child {
  margin-bottom: 0;
}

strong { font-weight: 700; }
em     { font-style: italic; }

blockquote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-gray);
  border-left: 4px solid var(--color-red);
  padding-left: var(--space-6);
  margin: var(--space-8) 0;
}

/* ── Utility Classes ────────────────────────────────────────── */

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--space-20);
}

.section--sm {
  padding-block: var(--space-12);
}

.section--lg {
  padding-block: var(--space-24);
}

/* Grid helpers */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

@media (max-width: 900px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Flex helpers */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }

/* Text */
.text-center  { text-align: center; }
.text-left    { text-align: left; }
.text-right   { text-align: right; }
.text-red     { color: var(--color-red); }
.text-gray    { color: var(--color-gray); }
.text-white   { color: var(--color-white); }

/* Background */
.bg-cream     { background-color: var(--color-cream); }
.bg-dark      { background-color: var(--color-dark); color: var(--color-white); }
.bg-red       { background-color: var(--color-red);  color: var(--color-white); }

/* Spacing helpers */
.mt-auto { margin-top: auto; }
.mb-0    { margin-bottom: 0; }
.w-full  { width: 100%; }

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Scroll margin for anchor targets (offset for sticky nav) */
[id] {
  scroll-margin-top: var(--nav-height);
}

/* Section heading with red underline accent */
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-red);
  margin-top: var(--space-3);
}

.section-title--center::after {
  margin-inline: auto;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-gray);
  max-width: 60ch;
  margin-bottom: var(--space-10);
}

/* ── Responsive Section Layouts ────────────────────────────── */

/* 3fr/2fr content + sidebar — used across all pages */
.content-sidebar {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: var(--space-16);
  align-items: start;
}

/* 1fr/1fr equal two-column section */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

@media (max-width: 900px) {
  .content-sidebar,
  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

/* 1fr/1fr form name row (first + last) */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Reduce section vertical padding on mobile */
@media (max-width: 768px) {
  .section {
    padding-block: var(--space-12);
  }

  .section--lg {
    padding-block: var(--space-16);
  }
}
/* =============================================================
   base.css — CSS custom properties, reset, typography, utilities
   TKE Zeta Phi Foundation
   ============================================================= */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  /* Colors */
  --color-red:        #A8192E;
  --color-red-dark:   #8B1325;
  --color-gray:       #787276;
  --color-gray-light: #D4D0CF;
  --color-cream:      #FAF7F2;
  --color-dark:       #1A1A1A;
  --color-white:      #FFFFFF;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Lato', 'Source Sans 3', system-ui, sans-serif;

  --text-xs:   0.75rem;   /*  12px */
  --text-sm:   0.875rem;  /*  14px */
  --text-base: 1rem;      /*  16px */
  --text-lg:   1.125rem;  /*  18px */
  --text-xl:   1.25rem;   /*  20px */
  --text-2xl:  1.5rem;    /*  24px */
  --text-3xl:  1.875rem;  /*  30px */
  --text-4xl:  2.25rem;   /*  36px */
  --text-5xl:  3rem;      /*  48px */
  --text-6xl:  3.75rem;   /*  60px */

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1200px;
  --container-pad: 1.5rem;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.10);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Nav height (used for scroll-margin-top) */
  --nav-height: 70px;
}

/* ── CSS Reset / Normalize ──────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-red);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-red-dark);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ── Base Typography ────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl);  }
h6 { font-size: var(--text-lg);  }

@media (max-width: 768px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }
}

@media (max-width: 480px) {
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  h3 { font-size: var(--text-xl);  }
}

p {
  margin-bottom: var(--space-4);
  max-width: 70ch;
}

p:last-child {
  margin-bottom: 0;
}

strong { font-weight: 700; }
em     { font-style: italic; }

blockquote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-gray);
  border-left: 4px solid var(--color-red);
  padding-left: var(--space-6);
  margin: var(--space-8) 0;
}

/* ── Utility Classes ────────────────────────────────────────── */

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--space-20);
}

.section--sm {
  padding-block: var(--space-12);
}

.section--lg {
  padding-block: var(--space-24);
}

/* Grid helpers */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

@media (max-width: 900px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Flex helpers */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }

/* Text */
.text-center  { text-align: center; }
.text-left    { text-align: left; }
.text-right   { text-align: right; }
.text-red     { color: var(--color-red); }
.text-gray    { color: var(--color-gray); }
.text-white   { color: var(--color-white); }

/* Background */
.bg-cream     { background-color: var(--color-cream); }
.bg-dark      { background-color: var(--color-dark); color: var(--color-white); }
.bg-red       { background-color: var(--color-red);  color: var(--color-white); }

/* Spacing helpers */
.mt-auto { margin-top: auto; }
.mb-0    { margin-bottom: 0; }
.w-full  { width: 100%; }

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Scroll margin for anchor targets (offset for sticky nav) */
[id] {
  scroll-margin-top: var(--nav-height);
}

/* Section heading with red underline accent */
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-red);
  margin-top: var(--space-3);
}

.section-title--center::after {
  margin-inline: auto;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-gray);
  max-width: 60ch;
  margin-bottom: var(--space-10);
}

/* ── Responsive Section Layouts ────────────────────────────── */

/* 3fr/2fr content + sidebar — used across all pages */
.content-sidebar {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: var(--space-16);
  align-items: start;
}

/* 1fr/1fr equal two-column section */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

@media (max-width: 900px) {
  .content-sidebar,
  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

/* 1fr/1fr form name row (first + last) */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Reduce section vertical padding on mobile */
@media (max-width: 768px) {
  .section {
    padding-block: var(--space-12);
  }

  .section--lg {
    padding-block: var(--space-16);
  }
}