/* ================================================================
   OPTIFLOWS — BASE.CSS
   Firmus-derived design system. Light-mode first.
   General Sans + Space Mono. Teal palette.
   ================================================================ */

/* --- Font Loading --- */
@import url('https://api.fontshare.com/v2/css?f[]=general-sans@400,500,600&display=swap');

/* --- Reset --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  position: relative;
}

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

body, html {
  height: 100%;
  max-width: 100vw;
}

body {
  line-height: 1.3;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

ul, ol { list-style: none; }

/* --- Design Tokens --- */
:root {
  /* Core palette — teal replaces firmus green */
  --black: #0c0c0c;
  --white: #ffffff;
  --electric-teal: #66FFE0;
  --mid-teal: #0A6E6E;
  --dark-teal: #053D3D;
  --interface-teal: #66FFE0;
  --light-interface-teal: #E0FFF6;
  --mist-teal: #B8E8E0;

  /* Neutrals */
  --grey: #eff0f2;
  --mid-grey: #6f6f6f;
  --dark-grey: #1a1a1a;
  --light-grey: #ddd;
  --very-light-grey: #f7f7f7;
  --bright-grey: #d1d2d3;

  /* Fonts */
  --font-primary: "General Sans", "General Sans Fallback", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "Space Mono", "Courier New", monospace;

  /* Type scale — firmus-derived clamp values */
  --font-size-xxxx-large: clamp(2.5rem, 0.69vw + 2.28rem, 3rem);
  --font-size-xxx-large: clamp(2.25rem, 0.69vw + 2.03rem, 2.75rem);
  --font-size-xx-large: clamp(2rem, 0.69vw + 1.78rem, 2.5rem);
  --font-size-x-large: clamp(1.5rem, 0.69vw + 1.28rem, 2rem);
  --font-size-large: clamp(1.25rem, 0.35vw + 1.14rem, 1.5rem);
  --font-size-medium: clamp(1.125rem, 0.17vw + 1.07rem, 1.25rem);
  --font-size-body: clamp(1rem, .17vw + .95rem, 1.13rem);
  --font-size-small: clamp(0.875rem, 0.17vw + 0.82rem, 1rem);
  --font-size-x-small: 0.875rem;
  --font-size-xx-small: 0.75rem;
  --font-size-label: 0.6875rem;

  /* Layout */
  --max-width: 1480px;
  --main-max-width: 1520px;
  --container-padding: 20px;
  --section-gap: 80px;
  --border-radius: 15px;
  --border-radius-small: 5px;
  --border-radius-large: 25px;

  /* Motion */
  --easeInOut: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@media (min-width: 1260px) {
  :root {
    --container-padding: 80px;
  }
}

@media (max-width: 1024px) {
  :root {
    --section-gap: 50px;
  }
}

/* --- Base Typography --- */
body {
  font-family: var(--font-primary);
  font-size: var(--font-size-body);
  font-weight: 400;
  line-height: 1.3;
  color: var(--black);
  background-color: var(--white);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--dark-teal);
}

p {
  color: var(--mid-grey);
  line-height: 1.5;
}

/* --- Main container --- */
main {
  max-width: var(--main-max-width);
  margin: 0 auto;
}

/* --- Scroll reveal --- */
.animate-div {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--easeInOut), transform 0.5s var(--easeInOut);
}

.animate-div.Visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .animate-div { opacity: 1; transform: none; }
}

/* --- Selection --- */
::selection {
  background: var(--dark-teal);
  color: var(--white);
}

:focus-visible {
  outline: 2px solid var(--mid-teal);
  outline-offset: 2px;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--white); }
::-webkit-scrollbar-thumb { background: var(--bright-grey); border-radius: 3px; }