/* ======================================================
   PROTOCALL DESIGN SYSTEM
   Premium Operations Platform — Design Tokens & Base
   Inspired by: Stripe elegance, Linear minimalism, Vercel dark
   ====================================================== */

/* ---------- METRIC-MATCHED FALLBACK FONTS ---------- */
/* Eliminates layout shift when Inter / Archivo Black swap in.
   Values calibrated against actual font metrics so the fallback
   occupies the same advance width & line-height as the web font. */
@font-face {
  font-family: 'InterFallback';
  src: local('Arial'), local('Helvetica Neue'), local('Helvetica');
  size-adjust: 107%;
  ascent-override: 90%;
  descent-override: 22.5%;
  line-gap-override: 0%;
}
@font-face {
  font-family: 'ArchivoBlackFallback';
  src: local('Arial Black'), local('Impact'), local('Helvetica Neue Bold');
  size-adjust: 100%;
  ascent-override: 95%;
  descent-override: 23%;
  line-gap-override: 0%;
}

/* ---------- CSS CUSTOM PROPERTIES ---------- */
:root {
  /* Brand Colors — Orange-led identity */
  --color-primary: #FF6B2C;
  --color-primary-light: #FF8854;
  --color-primary-dark: #E85C1F;
  --color-primary-darker: #C44A18;
  --color-primary-glow: rgba(255, 107, 44, 0.22);
  --color-primary-subtle: rgba(255, 107, 44, 0.08);

  /* Action accent (kept for legacy refs — same as primary) */
  --color-accent: #FF6B2C;
  --color-accent-light: #FF8854;
  --color-accent-dark: #E85C1F;
  --color-accent-glow: rgba(255, 107, 44, 0.22);

  /* Deep ink — used for charts, secondary marks, dark surfaces */
  --color-ink: #0F172A;
  --color-ink-light: #1E293B;

  /* Neutral / Light Theme (body) */
  --color-bg-body: #FAFAFA;
  --color-bg-white: #FFFFFF;
  --color-bg-subtle: #F5F5F7;
  --color-bg-card: #FFFFFF;
  --color-bg-card-hover: #FAFAFA;

  /* Dark Palette (hero, dark sections, footer) */
  --color-dark: #09090B;
  --color-dark-elevated: #18181B;
  --color-dark-card: rgba(255, 255, 255, 0.04);
  --color-dark-card-hover: rgba(255, 255, 255, 0.08);

  /* Borders */
  --color-border: #E2E8F0;
  --color-border-subtle: #F1F5F9;
  --color-border-dark: rgba(255, 255, 255, 0.06);
  --color-border-dark-hover: rgba(255, 255, 255, 0.12);
  --color-border-active: rgba(255, 107, 44, 0.35);

  /* Text — Light Mode */
  --color-text-heading: #0F172A;
  --color-text-body: #334155;
  --color-text-secondary: #64748B;
  --color-text-tertiary: #94A3B8;

  /* Text — Dark Mode */
  --color-text-on-dark: #FFFFFF;
  --color-text-on-dark-secondary: rgba(255, 255, 255, 0.6);
  --color-text-on-dark-tertiary: rgba(255, 255, 255, 0.35);

  /* Semantic */
  --color-success: #059669;
  --color-success-bg: #ECFDF5;
  --color-warning: #D97706;
  --color-warning-bg: #FFFBEB;
  --color-error: #DC2626;
  --color-error-bg: #FEF2F2;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #FF8854 0%, #FF6B2C 50%, #E85C1F 100%);
  --gradient-text: linear-gradient(135deg, #FFFFFF 0%, #E2E8F0 50%, #94A3B8 100%);
  --gradient-text-blue: linear-gradient(135deg, #FF6B2C 0%, #FF8854 100%);
  --gradient-mesh: radial-gradient(at 40% 20%, rgba(255, 107, 44, 0.12) 0, transparent 50%),
                    radial-gradient(at 80% 0%, rgba(255, 136, 84, 0.08) 0, transparent 50%),
                    radial-gradient(at 0% 50%, rgba(255, 107, 44, 0.06) 0, transparent 50%);
  --gradient-hero-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 107, 44, 0.10), transparent 40%);

  /* Typography */
  --font-primary: 'Inter', 'InterFallback', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Archivo Black', 'ArchivoBlackFallback', 'Arial Black', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --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: 2rem;        /* 32px */
  --text-4xl: 2.5rem;      /* 40px */
  --text-5xl: 3.25rem;     /* 52px */
  --text-6xl: 4rem;        /* 64px */

  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.04em;
  --tracking-wider: 0.08em;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  /* Spacing Scale */
  --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 */

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --container-wide: 1440px;
  --container-padding: var(--space-6);

  /* Border Radius — modern, not bubbly */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows / Elevation — Light theme */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.08), 0 8px 16px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.12);
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 40px rgba(255, 107, 44, 0.15);
  --shadow-glow-accent: 0 0 40px rgba(255, 107, 44, 0.15);

  /* Motion — smooth, slightly springy */
  --ease-out: cubic-bezier(0.25, 0.4, 0, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 800ms;

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scrollbar-gutter: stable;
  overscroll-behavior-y: none;
}

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

body {
  font-family: var(--font-primary);
  font-size: 0.9375rem; /* 15px — premium SaaS density */
  font-weight: var(--weight-regular);
  line-height: 1.6;
  letter-spacing: -0.006em;
  color: var(--color-text-body);
  background-color: var(--color-bg-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-heading);
}

h1 { font-size: var(--text-5xl); font-weight: var(--weight-extrabold); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-xl); font-weight: var(--weight-semibold); }
h4 { font-size: var(--text-lg); font-weight: var(--weight-semibold); }
h5 { font-size: var(--text-base); font-weight: var(--weight-semibold); }
h6 { font-size: var(--text-sm); font-weight: var(--weight-semibold); }

p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-blue {
  background: var(--gradient-text-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- LAYOUT ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

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

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

.section {
  padding: var(--space-20) 0;
  position: relative;
}

.section--dark {
  background: var(--color-dark);
  color: var(--color-text-on-dark);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-text-on-dark);
}

.section--dark p {
  color: var(--color-text-on-dark-secondary);
}

.section--subtle {
  background: var(--color-bg-white);
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-12);
}

.section__tag {
  display: inline-block;
  font-size: 11px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section--dark .section__tag {
  color: var(--color-accent);
}

.section__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
  letter-spacing: var(--tracking-tight);
}

.section__subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 560px;
  margin: 0 auto;
}

.section--dark .section__subtitle {
  color: var(--color-text-on-dark-secondary);
}

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

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-tertiary);
}

/* ---------- SELECTION ---------- */
::selection {
  background: var(--color-primary);
  color: #fff;
}

/* ---------- SCREEN READER ONLY ---------- */
.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;
}

/* ======================================================
   PREMIUM MOTION LAYER
   Goal: silky-smooth, restrained, GPU-accelerated movement.
   Apply globally — opt-out via prefers-reduced-motion.
   ====================================================== */
:root {
  --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);   /* expo-out, the "Apple" curve */
  --ease-smooth:  cubic-bezier(0.4, 0, 0.2, 1);     /* material standard */
  --ease-soft:    cubic-bezier(0.32, 0.72, 0, 1);   /* Linear.app style */
  --motion-fast:   220ms;
  --motion-base:   360ms;
  --motion-slow:   620ms;
}

/* Promote common animated surfaces to their own GPU layer so
   transforms/opacity stay buttery and never trigger paint. */
.btn,
.nav__link,
.nav__dropdown,
.service-card,
.industry-card,
.why-card,
.testimonial-card,
.platform-card,
.platforms__card,
.case-card,
.team-card,
.value-card,
.step-card,
.faq-item,
.feature-card,
.trust__logo,
.contact__detail,
.wa-fab,
.reveal {
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Refined reveal: longer, expo-out, tiny scale for depth */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translate3d(0, 28px, 0) scale(0.985);
    transition:
      opacity   var(--motion-slow) var(--ease-premium),
      transform var(--motion-slow) var(--ease-premium);
  }
  .reveal.visible {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
  }
}

/* Universal hover/focus polish — premium ease, never abrupt */
@media (prefers-reduced-motion: no-preference) {
  a,
  button,
  .btn,
  .nav__link,
  .service-card,
  .industry-card,
  .why-card,
  .testimonial-card,
  .platform-card,
  .platforms__card,
  .case-card,
  .team-card,
  .value-card,
  .step-card,
  .feature-card,
  .trust__logo {
    transition:
      transform   var(--motion-base) var(--ease-premium),
      box-shadow  var(--motion-base) var(--ease-premium),
      border-color var(--motion-base) var(--ease-premium),
      background-color var(--motion-base) var(--ease-premium),
      color       var(--motion-fast) var(--ease-smooth),
      opacity     var(--motion-fast) var(--ease-smooth);
  }

  /* Subtle, consistent card lift */
  .service-card:hover,
  .industry-card:hover,
  .why-card:hover,
  .platform-card:hover,
  .platforms__card:hover,
  .case-card:hover,
  .team-card:hover,
  .value-card:hover,
  .step-card:hover,
  .feature-card:hover {
    transform: translate3d(0, -4px, 0);
  }

  .btn:hover { transform: translate3d(0, -1px, 0); }
  .btn:active { transform: translate3d(0, 0, 0); transition-duration: 80ms; }
}

/* Premium focus ring — soft, not jarring */
:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 107, 44, 0.28);
  border-radius: 6px;
  transition: box-shadow var(--motion-fast) var(--ease-smooth);
}

/* Smoother sticky header tone-shift */
.site-header {
  transition:
    background-color var(--motion-base) var(--ease-premium),
    backdrop-filter  var(--motion-base) var(--ease-premium),
    box-shadow       var(--motion-base) var(--ease-premium),
    border-color     var(--motion-base) var(--ease-premium);
}

/* Honor user preference: kill all motion */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}