/* ============================================================
   BASE.CSS — SolarGente Design Tokens + Reset
   
   BRAND PALETTE (from Solargente-Brand-3.pdf):
     Bone        #F1ECE5  — primary surface
     Deep Green  #094232  — text + primary brand
     Yellow Sun  #F7E445  — accent (mark on deep green hero)
     Day Green   #008C68  — mid green (secondary accents)
     Mint        #DEE3E0  — secondary light surface
   
   Type: Syne (display/titles) + Satoshi (body)
   ============================================================ */

/* ---- Self-hosted Syne (official designer files, OFL licensed) ---- */
@font-face {
  font-family: 'Syne';
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  src: url('./assets/fonts/Syne-Regular.ttf') format('truetype');
}
@font-face {
  font-family: 'Syne';
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  src: url('./assets/fonts/Syne-Medium.ttf') format('truetype');
}
@font-face {
  font-family: 'Syne';
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  src: url('./assets/fonts/Syne-SemiBold.ttf') format('truetype');
}
@font-face {
  font-family: 'Syne';
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  src: url('./assets/fonts/Syne-Bold.ttf') format('truetype');
}
@font-face {
  font-family: 'Syne';
  font-weight: 800;
  font-style: normal;
  font-display: swap;
  src: url('./assets/fonts/Syne-ExtraBold.ttf') format('truetype');
}
/* Satoshi loads from Fontshare via <link> in HTML head */

/* --- CSS Custom Properties --- */
:root {
  /* Typography
     ----------------------------------------------------------------
     --font-logo    : Syne (geometric display) — RESERVED FOR LOGO ONLY
     --font-display : Satoshi — all headings, hero H1, section H2s
     --font-body    : Satoshi — paragraphs, UI, buttons, stats
     To use Syne elsewhere, set `font-family: var(--font-logo);`
     ---------------------------------------------------------------- */
  --font-logo:    'Syne', 'Trebuchet MS', sans-serif;
  --font-display: 'Satoshi', 'Helvetica Neue', Arial, sans-serif;
  --font-body:    'Satoshi', 'Helvetica Neue', Arial, sans-serif;

  /* Fluid Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* 4px Spacing System */
  --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;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:     cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;
}

/* ============================================================
   LIGHT MODE (default)
   ============================================================ */
:root, [data-theme="light"] {
  /* Brand */
  --brand-bone:       #F1ECE5;
  --brand-deep:       #094232;
  --brand-yellow:     #F7E445;
  --brand-day:        #008C68;
  --brand-mint:       #DEE3E0;

  /* Foundation — Bone surface, deep green text */
  --color-bg:            #F1ECE5;
  --color-bg-alt:        #E9E2D6;
  --color-surface:       #FBF7F0;
  --color-surface-2:     #F1ECE5;
  --color-text:          #094232;
  --color-text-muted:    #4A6B5D;
  --color-text-faint:    #87998F;
  --color-border:        #D6CFC0;
  --color-divider:       #E0D9CB;

  /* Primary — Deep Green */
  --color-primary:       #094232;
  --color-primary-hover: #073527;
  --color-primary-active:#052920;
  --color-primary-light: #DEE3E0;

  /* Accent — Day Green (mid green) */
  --color-accent:        #008C68;
  --color-accent-hover:  #007355;
  --color-accent-light:  #DEE3E0;

  /* Yellow Sun — for stat numbers on deep green, accents */
  --color-yellow:        #B8A100;  /* darkened for WCAG AA on bone */
  --color-yellow-pure:   #F7E445;  /* pure brand yellow — only on deep green */
  --color-yellow-light:  #FBF6CE;

  /* Mint — secondary light surface */
  --color-sky:           #008C68;
  --color-sky-light:     #DEE3E0;

  /* Email/contact CTA (replaces WhatsApp) */
  --color-whatsapp:      #094232;
  --color-whatsapp-hover:#073527;

  /* Semantic */
  --color-text-inverse:  #F1ECE5;
  --color-overlay:       rgba(9, 66, 50, 0.55);

  /* Shadows — softer, warm-tinted */
  --shadow-sm: 0 1px 3px rgba(9, 66, 50, 0.06);
  --shadow-md: 0 4px 12px rgba(9, 66, 50, 0.08);
  --shadow-lg: 0 12px 32px rgba(9, 66, 50, 0.12);
  --shadow-xl: 0 20px 48px rgba(9, 66, 50, 0.16);
}

/* ============================================================
   DARK MODE
   ============================================================ */
[data-theme="dark"] {
  /* Brand (constant) */
  --brand-bone:       #F1ECE5;
  --brand-deep:       #094232;
  --brand-yellow:     #F7E445;
  --brand-day:        #008C68;
  --brand-mint:       #DEE3E0;

  /* Foundation — Deep Green surface, Bone text */
  --color-bg:            #094232;
  --color-bg-alt:        #073527;
  --color-surface:       #0C5440;
  --color-surface-2:     #073527;
  --color-text:          #F1ECE5;
  --color-text-muted:    #B7C7BD;
  --color-text-faint:    #87998F;
  --color-border:        #1A5947;
  --color-divider:       #133E2F;

  /* Primary — Mint for contrast on deep green */
  --color-primary:       #DEE3E0;
  --color-primary-hover: #C8D2CC;
  --color-primary-active:#B7C7BD;
  --color-primary-light: #0C5440;

  /* Accent — brighter Day Green */
  --color-accent:        #00B484;
  --color-accent-hover:  #009B70;
  --color-accent-light:  #0C5440;

  /* Yellow Sun — full pop on deep green */
  --color-yellow:        #F7E445;
  --color-yellow-pure:   #F7E445;
  --color-yellow-light:  #3A3415;

  /* Mint */
  --color-sky:           #DEE3E0;
  --color-sky-light:     #0C5440;

  /* CTA */
  --color-whatsapp:      #F7E445;
  --color-whatsapp-hover:#FFEE5A;

  /* Semantic */
  --color-text-inverse:  #094232;
  --color-overlay:       rgba(0, 0, 0, 0.6);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.5);
}

/* System preference fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:            #094232;
    --color-bg-alt:        #073527;
    --color-surface:       #0C5440;
    --color-surface-2:     #073527;
    --color-text:          #F1ECE5;
    --color-text-muted:    #B7C7BD;
    --color-text-faint:    #87998F;
    --color-border:        #1A5947;
    --color-divider:       #133E2F;
    --color-primary:       #DEE3E0;
    --color-primary-hover: #C8D2CC;
    --color-primary-active:#B7C7BD;
    --color-primary-light: #0C5440;
    --color-accent:        #00B484;
    --color-accent-hover:  #009B70;
    --color-accent-light:  #0C5440;
    --color-yellow:        #F7E445;
    --color-yellow-pure:   #F7E445;
    --color-yellow-light:  #3A3415;
    --color-sky:           #DEE3E0;
    --color-sky-light:     #0C5440;
    --color-whatsapp:      #F7E445;
    --color-whatsapp-hover:#FFEE5A;
    --color-text-inverse:  #094232;
    --color-overlay:       rgba(0, 0, 0, 0.6);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.5);
  }
}

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

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scroll-padding-top: 5rem;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.15;
  font-family: var(--font-display);
}

p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection {
  background: rgba(247, 228, 69, 0.5);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button { cursor: pointer; background: none; border: none; }
a { color: inherit; text-decoration: none; }

a, button, [role="button"], [role="link"], input, textarea, select {
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.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;
}