/*
Theme Name: ChangeTank
Theme URI: https://www.changetank.com.au
Description: Custom theme for The Change Tank — management consulting, business transformation. Bold, confident, light aesthetic with DM Sans typography and orange brand accent.
Author: The Change Tank
Author URI: https://www.changetank.com.au
Version: 2.0
Requires at least: 6.0
Tested up to: 7.0
Requires PHP: 7.4
License: Proprietary
License URI: https://www.changetank.com.au
Text Domain: changetank
*/

/* ============================================================
   CUSTOM PROPERTIES
   ============================================================ */

:root {
  /* Brand colours */
  --ct-orange:     #F47B20;   /* PLACEHOLDER — MJ to confirm exact hex in Phase 3B */
  --ct-white:      #ffffff;
  --ct-cream:      #f7f6f3;
  --ct-dark:       #1a1a1a;
  --ct-grey:       #6b6b6b;
  --ct-border:     #e5e5e5;

  /* Typography */
  --ct-font:       'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Layout */
  --ct-max-width:  1200px;
  --ct-radius:     4px;

  /* Spacing scale */
  --space-xs:      0.25rem;   /*  4px */
  --space-sm:      0.5rem;    /*  8px */
  --space-md:      1rem;      /* 16px */
  --space-lg:      1.5rem;    /* 24px */
  --space-xl:      2rem;      /* 32px */
  --space-2xl:     3rem;      /* 48px */
  --space-3xl:     4rem;      /* 64px */
  --space-xxl:     5rem;      /* 80px */
}


/* ============================================================
   CSS RESET
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

input,
button,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}


/* ============================================================
   BASE TYPOGRAPHY
   ============================================================ */

body {
  font-family: var(--ct-font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ct-dark);
  background-color: var(--ct-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1 {
  font-size: 48px;
  line-height: 1.1;
  font-weight: 700;
  color: var(--ct-dark);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 36px;
  line-height: 1.2;
  font-weight: 700;
  color: var(--ct-dark);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 24px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--ct-dark);
}

h4 {
  font-size: 20px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--ct-dark);
}

h5 {
  font-size: 18px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--ct-dark);
}

h6 {
  font-size: 16px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--ct-dark);
}

p {
  margin-bottom: 1rem;
}

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

a {
  color: var(--ct-orange);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--ct-dark);
  text-decoration: underline;
}

strong,
b {
  font-weight: 700;
}

em,
i {
  font-style: italic;
}

ul,
ol {
  padding-left: var(--space-xl);
  margin-bottom: 1rem;
}

li {
  margin-bottom: var(--space-xs);
}

blockquote {
  border-left: 3px solid var(--ct-orange);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  color: var(--ct-grey);
  font-size: 18px;
  line-height: 1.6;
}

hr {
  border: none;
  border-top: 1px solid var(--ct-border);
  margin: var(--space-2xl) 0;
}


/* ============================================================
   BUTTON STYLES
   ============================================================ */

.btn-primary,
.btn-secondary,
.btn-text {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--ct-font);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

/* Primary: orange background, white text */
.btn-primary {
  background-color: var(--ct-orange);
  color: var(--ct-white);
  border: 2px solid var(--ct-orange);
  padding: 0.875rem 2rem;
  border-radius: var(--ct-radius);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--ct-dark);
  border-color: var(--ct-dark);
  color: var(--ct-white);
  text-decoration: none;
}

/* Secondary: transparent background, orange border and text */
.btn-secondary {
  background-color: transparent;
  color: var(--ct-orange);
  border: 2px solid var(--ct-orange);
  padding: 0.875rem 2rem;
  border-radius: var(--ct-radius);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--ct-orange);
  color: var(--ct-white);
  text-decoration: none;
}

/* Text link: no border/bg, orange with arrow */
.btn-text {
  background-color: transparent;
  color: var(--ct-orange);
  border: none;
  padding: 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.btn-text::after {
  content: ' →';
}

.btn-text:hover,
.btn-text:focus {
  color: var(--ct-dark);
  text-decoration: none;
}


/* ============================================================
   LAYOUT
   ============================================================ */

.container {
  max-width: var(--ct-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.container-narrow {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.section {
  padding-top: var(--space-xxl);
  padding-bottom: var(--space-xxl);
}

.section--cream {
  background-color: var(--ct-cream);
}

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

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


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

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

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* Asymmetric hero layout: 55/45 text-left, image-right */
.grid-hero {
  display: grid;
  grid-template-columns: 55fr 45fr;
  gap: 4rem;
  align-items: center;
}


/* ============================================================
   UTILITY CLASSES
   ============================================================ */

.text-orange {
  color: var(--ct-orange);
}

.text-muted {
  color: var(--ct-grey);
}

.text-small {
  font-size: 13px;
  line-height: 1.5;
}

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

.text-right {
  text-align: right;
}

/* Eyebrow: small all-caps label, orange, above headings */
.eyebrow {
  display: block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ct-orange);
  margin-bottom: var(--space-sm);
}

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

/* Flex 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;
}

.gap-sm  { gap: var(--space-sm); }
.gap-md  { gap: var(--space-md); }
.gap-lg  { gap: var(--space-lg); }
.gap-xl  { gap: var(--space-xl); }

/* Margin utilities */
.mb-0   { margin-bottom: 0; }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-lg  { margin-bottom: var(--space-lg); }
.mb-xl  { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mt-xl  { margin-top: var(--space-xl); }

/* Width utilities */
.w-full { width: 100%; }

/* Orange accent rule (horizontal divider in brand colour) */
.accent-rule {
  display: block;
  width: 40px;
  height: 3px;
  background-color: var(--ct-orange);
  margin-bottom: var(--space-lg);
}

.accent-rule--center {
  margin-left: auto;
  margin-right: auto;
}


/* ============================================================
   RESPONSIVE — 1024px
   ============================================================ */

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

  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 30px;
  }

  .grid-hero {
    gap: 2.5rem;
  }
}


/* ============================================================
   RESPONSIVE — 768px (tablet / grid collapse point)
   ============================================================ */

@media (max-width: 768px) {
  :root {
    --space-xxl: 3.5rem;
  }

  h1 {
    font-size: 34px;
    letter-spacing: -0.01em;
  }

  h2 {
    font-size: 26px;
  }

  h3 {
    font-size: 22px;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .grid-hero {
    grid-template-columns: 1fr;
  }

  /* On mobile, image comes second in hero (after text) */
  .grid-hero .hero-image {
    order: 2;
  }

  .section {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }
}


/* ============================================================
   RESPONSIVE — 480px (small mobile)
   ============================================================ */

@media (max-width: 480px) {
  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 22px;
  }

  .container,
  .container-narrow {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  /* Buttons go full-width on small mobile */
  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .section {
    padding-top: 2.5rem;
    padding-bottom: 2.5rem;
  }
}


/* ============================================================
   WORDPRESS CORE OVERRIDES
   ============================================================ */

/* Remove default WP margin from last child in content areas */
.entry-content > *:last-child {
  margin-bottom: 0;
}

/* Alignment classes */
.alignleft  { float: left;  margin-right: var(--space-lg); margin-bottom: var(--space-md); }
.alignright { float: right; margin-left:  var(--space-lg); margin-bottom: var(--space-md); }
.aligncenter {
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-md);
}

/* Clear fix */
.clearfix::after {
  content: '';
  display: table;
  clear: both;
}

/* Screen reader text (WordPress standard) */
.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}