/* ============================================================
   SalesMechanix — Design System
   Brand of Mangotrax Solutions LLP
   ============================================================ */

/* ------------------------------------------------------------
   1. CUSTOM PROPERTIES (CSS Variables)
   ------------------------------------------------------------ */
:root {
  /* Brand colours */
  --color-brand-dark:     #0F0F0F;
  --color-brand-teal:     #0F6E56;
  --color-brand-teal-mid: #1D9E75;
  --color-brand-teal-lt:  #E1F5EE;
  --color-brand-white:    #FFFFFF;

  /* Neutrals */
  --color-neutral-950: #0F0F0F;
  --color-neutral-900: #1A1A1A;
  --color-neutral-800: #2C2C2A;
  --color-neutral-700: #444441;
  --color-neutral-600: #5F5E5A;
  --color-neutral-500: #888780;
  --color-neutral-400: #B4B2A9;
  --color-neutral-300: #D3D1C7;
  --color-neutral-200: #E8E8E4;
  --color-neutral-100: #F4F4F2;
  --color-neutral-50:  #F9F9F7;

  /* Engine accent colours */
  --color-demand:      #0F6E56;
  --color-demand-lt:   #E1F5EE;
  --color-sdr:         #534AB7;
  --color-sdr-lt:      #EEEDFE;
  --color-performance: #854F0B;
  --color-performance-lt: #FAEEDA;
  --color-enablement:  #993C1D;
  --color-enablement-lt: #FAECE7;
  --color-leadership:  #444441;
  --color-leadership-lt: #F1EFE8;

  /* Semantic */
  --color-success:     #0F6E56;
  --color-success-lt:  #E1F5EE;
  --color-danger:      #A32D2D;
  --color-danger-lt:   #FCEBEB;

  /* Typography */
  --font-sans:   'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-serif:  'Georgia', 'Times New Roman', serif;
  --font-mono:   'JetBrains Mono', 'Courier New', monospace;

  /* Type scale */
  --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 */

  /* Font weights */
  --weight-regular: 400;
  --weight-medium:  500;
  --weight-semibold: 600;

  /* Line heights */
  --leading-tight:  1.2;
  --leading-snug:   1.35;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;
  --leading-loose:  1.8;

  /* Spacing scale (8px base) */
  --space-1:  0.25rem;  /* 4px */
  --space-2:  0.5rem;   /* 8px */
  --space-3:  0.75rem;  /* 12px */
  --space-4:  1rem;     /* 16px */
  --space-5:  1.25rem;  /* 20px */
  --space-6:  1.5rem;   /* 24px */
  --space-8:  2rem;     /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* Border radius */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-pill: 999px;

  /* Borders */
  --border-subtle:   1px solid var(--color-neutral-200);
  --border-default:  1px solid var(--color-neutral-300);
  --border-strong:   1px solid var(--color-neutral-400);

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg:  0 12px 32px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.06);

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

  /* Layout */
  --container-max:    1140px;
  --container-narrow: 760px;
  --container-wide:   1280px;
  --nav-height:       72px;
}

/* ------------------------------------------------------------
   2. RESET & BASE
   ------------------------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-relaxed);
  color: var(--color-neutral-900);
  background-color: var(--color-brand-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

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

/* ------------------------------------------------------------
   3. TYPOGRAPHY SYSTEM
   ------------------------------------------------------------ */

/* Display headings — hero only */
.text-display {
  font-size: clamp(2.5rem, 5vw, var(--text-6xl));
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--color-neutral-950);
}

.text-display-inv {
  font-size: clamp(2.5rem, 5vw, var(--text-6xl));
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--color-brand-white);
}

/* Section headings */
.text-h1 {
  font-size: clamp(1.875rem, 3.5vw, var(--text-4xl));
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  letter-spacing: -0.015em;
  color: var(--color-neutral-950);
}

.text-h2 {
  font-size: clamp(1.5rem, 2.5vw, var(--text-3xl));
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  letter-spacing: -0.01em;
  color: var(--color-neutral-900);
}

.text-h3 {
  font-size: clamp(1.125rem, 2vw, var(--text-xl));
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
  color: var(--color-neutral-900);
}

/* Body text */
.text-body-lg {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-neutral-700);
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

.text-body {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-neutral-700);
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

.text-body-sm {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-neutral-600);
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

/* Labels / overlines */
.text-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-neutral-500);
}

.text-label-brand {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-brand-teal);
}

/* Pull quotes */
.text-pullquote {
  font-family: var(--font-serif);
  font-size: clamp(1.125rem, 2vw, var(--text-xl));
  font-style: italic;
  line-height: var(--leading-relaxed);
  color: var(--color-neutral-600);
  border-left: 3px solid var(--color-neutral-300);
  padding-left: var(--space-6);
}

/* Inverted variants */
.text-inv         { color: var(--color-brand-white); }
.text-inv-muted   { color: rgba(255,255,255,0.70); }
.text-inv-subtle  { color: rgba(255,255,255,0.50); }

/* Utility */
.text-teal   { color: var(--color-brand-teal); }
.text-muted  { color: var(--color-neutral-500); }
.text-center { text-align: center; }
.text-right  { text-align: right; }

/* ------------------------------------------------------------
   4. LAYOUT SYSTEM
   ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.container--wide {
  max-width: var(--container-wide);
}

/* Section spacing */
.section {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
}

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

.section--lg {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

/* Background variants */
.bg-white   { background-color: var(--color-brand-white); }
.bg-light   { background-color: var(--color-neutral-50); }
.bg-subtle  { background-color: var(--color-neutral-100); }
.bg-dark    { background-color: var(--color-neutral-950); }
.bg-brand   { background-color: var(--color-brand-teal); }

/* Grid */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--5 { grid-template-columns: repeat(5, 1fr); }

.grid--auto-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--auto-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

/* 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; }
.flex-col     { display: flex; flex-direction: column; }
.gap-2        { gap: var(--space-2); }
.gap-3        { gap: var(--space-3); }
.gap-4        { gap: var(--space-4); }
.gap-6        { gap: var(--space-6); }
.gap-8        { gap: var(--space-8); }

/* ------------------------------------------------------------
   5. RESPONSIVE BREAKPOINTS
   ------------------------------------------------------------ */
/* Mobile first — breakpoints at 640, 768, 1024, 1280 */

@media (max-width: 1024px) {
  .grid--5 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .section       { padding-top: var(--space-12); padding-bottom: var(--space-12); }
  .section--lg   { padding-top: var(--space-20); padding-bottom: var(--space-20); }
  .container     { padding-left: var(--space-5); padding-right: var(--space-5); }

  .grid--2,
  .grid--3,
  .grid--4,
  .grid--5 { grid-template-columns: 1fr; }

  .hide-mobile { display: none !important; }
}

@media (max-width: 640px) {
  .container { padding-left: var(--space-4); padding-right: var(--space-4); }
}

/* ------------------------------------------------------------
   6. UTILITY CLASSES
   ------------------------------------------------------------ */

/* Spacing */
.mt-2  { margin-top: var(--space-2); }
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.mt-12 { margin-top: var(--space-12); }

.mb-2  { margin-bottom: var(--space-2); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }
.mb-10 { margin-bottom: var(--space-10); }
.mb-12 { margin-bottom: var(--space-12); }

/* Display */
.block        { display: block; }
.inline-block { display: inline-block; }
.hidden       { display: none; }

/* Borders */
.border-top    { border-top: var(--border-subtle); }
.border-bottom { border-bottom: var(--border-subtle); }

/* 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-2xl { border-radius: var(--radius-2xl); }