/* =============================================================
   BRIGHT PLATFORMS — Main Stylesheet
   Structure:
     1. CSS Custom Properties (design tokens)
     2. Reset / Base
     3. Typography
     4. Layout utilities
     5. Buttons
     6. Navigation
     7. Hero
     8. Section shared styles
     9. About
    10. Tools / Product cards
    11. Contact / Form
    12. Footer
    13. Animations & transitions
    14. Responsive overrides
   ============================================================= */


/* -------------------------------------------------------------
   1. CSS Custom Properties
   ------------------------------------------------------------- */
:root {
  /* Brand colours */
  --color-navy:       #0D1F3C;   /* Primary dark — nav, headings, strong text */
  --color-navy-mid:   #1A3560;   /* Mid navy — section alt bg, accents */
  --color-blue:       #1F6FEB;   /* Electric blue — primary CTAs, highlights */
  --color-blue-light: #3D8EF5;   /* Lighter blue — hover states, accents */
  --color-blue-faint: #EBF3FF;   /* Very light blue — subtle bg tints */

  /* Neutrals */
  --color-white:      #FFFFFF;
  --color-bg:         #FAFBFC;   /* Off-white page background */
  --color-surface:    #F2F5F9;   /* Card / alt section background */
  --color-border:     #DDE3EC;   /* Subtle borders */
  --color-text:       #1C2B3A;   /* Body text */
  --color-text-muted: #6A7F99;   /* Secondary / caption text */

  /* Semantic colours */
  --color-success:    #16A34A;
  --color-error:      #DC2626;

  /* Typography */
  --font-sans:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-normal:   400;
  --font-weight-medium:   500;
  --font-weight-semibold: 600;
  --font-weight-bold:     700;
  --font-weight-extrabold:800;
  --font-weight-black:    900;

  /* 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 */

  /* Layout */
  --container-max:  1200px;
  --container-pad:  var(--space-6);  /* horizontal padding */

  /* Borders */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  20px;

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(13, 31, 60, 0.08);
  --shadow-md:   0 4px 16px rgba(13, 31, 60, 0.10);
  --shadow-lg:   0 8px 32px rgba(13, 31, 60, 0.14);
  --shadow-card: 0 2px 12px rgba(13, 31, 60, 0.08);

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

  /* Navigation */
  --nav-height: 68px;
}


/* -------------------------------------------------------------
   2. Reset / Base
   ------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height); /* offset for sticky nav */
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-blue-light);
}

ul,
ol {
  list-style: none;
}

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

input,
textarea {
  font-family: inherit;
}

/* Focus visible ring — accessible but unobtrusive */
:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
  border-radius: 2px;
}


/* -------------------------------------------------------------
   3. Typography
   ------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.15;
  color: var(--color-navy);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
  color: var(--color-text);
  max-width: 68ch;
}

strong {
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
}


/* -------------------------------------------------------------
   4. Layout utilities
   ------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* Sections share consistent vertical rhythm */
.section {
  padding-block: var(--space-24);
}

.section--alt {
  background-color: var(--color-surface);
}


/* -------------------------------------------------------------
   5. Buttons
   ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-decoration: none;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

/* Primary — solid blue */
.btn--primary {
  background-color: var(--color-blue);
  color: var(--color-white);
  border: 2px solid var(--color-blue);
  box-shadow: 0 2px 8px rgba(31, 111, 235, 0.25);
}

.btn--primary:hover {
  background-color: var(--color-blue-light);
  border-color: var(--color-blue-light);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(31, 111, 235, 0.35);
}

/* Ghost — outlined */
.btn--ghost {
  background-color: transparent;
  color: var(--color-navy);
  border: 2px solid var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-navy);
  color: var(--color-navy);
}

/* Nav CTA — small, outlined blue */
.btn--nav {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  background-color: transparent;
  color: var(--color-blue);
  border: 2px solid var(--color-blue);
}

.btn--nav:hover {
  background-color: var(--color-blue);
  color: var(--color-white);
}

/* Full-width */
.btn--full {
  width: 100%;
}

/* Disabled state */
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}


/* -------------------------------------------------------------
   6. Navigation
   ------------------------------------------------------------- */
.nav-wrapper {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-normal);
}

/* Shadow added via JS when scrolled */
.nav-wrapper--scrolled {
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

/* Brand name */
.nav__brand {
  font-size: 1.25rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-navy);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav__brand:hover {
  color: var(--color-navy);
}

.nav__brand-accent {
  color: var(--color-blue);
}

/* Desktop links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-blue);
}

/* Hamburger toggle (hidden on desktop) */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav__toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-navy);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Hamburger → X animation */
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu drawer */
.mobile-menu {
  display: none;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) var(--container-pad) var(--space-6);
}

.mobile-menu.is-open {
  display: block;
}

.mobile-menu__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-menu__link {
  display: block;
  padding: var(--space-3) 0;
  font-size: 1.0625rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.mobile-menu__link:hover {
  color: var(--color-blue);
}


/* -------------------------------------------------------------
   7. Hero
   ------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--space-32) var(--space-24);
  background-color: var(--color-white);
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

/* Eyebrow label above the headline */
.hero__eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-blue);
  background-color: var(--color-blue-faint);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-6);
  max-width: none;
}

/* Main headline */
.hero__headline {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: var(--font-weight-black);
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--color-navy);
  margin-bottom: var(--space-6);
}

.hero__headline-accent {
  color: var(--color-blue);
}

/* Tagline */
.hero__tagline {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-10);
  max-width: 54ch;
}

/* CTA group */
.hero__ctas {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Decorative background blobs */
.hero__bg-shape {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.hero__bg-shape--1 {
  width: 640px;
  height: 640px;
  top: -200px;
  right: -160px;
  background: radial-gradient(circle, rgba(31, 111, 235, 0.08) 0%, transparent 70%);
}

.hero__bg-shape--2 {
  width: 400px;
  height: 400px;
  bottom: -100px;
  left: -80px;
  background: radial-gradient(circle, rgba(13, 31, 60, 0.05) 0%, transparent 70%);
}


/* -------------------------------------------------------------
   8. Section shared styles
   ------------------------------------------------------------- */
.section__header {
  margin-bottom: var(--space-12);
}

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

.section__header--center p {
  margin-inline: auto;
}

.section__eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: var(--space-3);
  max-width: none;
}

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  color: var(--color-navy);
  margin-bottom: var(--space-4);
}

.section__subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.65;
}


/* -------------------------------------------------------------
   9. About
   ------------------------------------------------------------- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.about__copy p {
  color: var(--color-text);
  line-height: 1.75;
  margin-bottom: var(--space-4);
}

.about__lead {
  font-size: 1.125rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-navy) !important;
  line-height: 1.65 !important;
}

/* Feature list */
.about__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.about__feature {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.about__feature-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-blue-faint);
  color: var(--color-blue);
  border-radius: var(--radius-md);
  font-size: 0.6rem;
  margin-top: 2px;
}

.about__feature strong {
  display: block;
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}

.about__feature p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
  max-width: none;
}


/* -------------------------------------------------------------
   10. Tools / Product Cards
   ------------------------------------------------------------- */
.tools__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* Base card */
.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal);
}

/* Hover effect */
.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.tool-card--live:hover {
  box-shadow: 0 8px 32px rgba(31, 111, 235, 0.15);
}

/* Badge (Live / Coming Soon) */
.tool-card__badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 2px 10px;
  border-radius: 999px;
}

.tool-card__badge--live {
  background-color: #DCFCE7;
  color: #15803D;
}

.tool-card__badge--soon {
  background-color: var(--color-surface);
  color: var(--color-text-muted);
}

/* Icon */
.tool-card__icon {
  color: var(--color-blue);
  margin-bottom: var(--space-5);
}

.tool-card__icon--muted {
  color: var(--color-border);
}

/* Title */
.tool-card__title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

/* Description */
.tool-card__description {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-6);
  flex: 1;  /* push CTA to bottom */
  max-width: none;
}

/* Card CTA */
.tool-card__cta {
  align-self: flex-start;
  font-size: 0.9rem;
  padding: 0.625rem 1.375rem;
}

/* Coming soon label */
.tool-card__coming-soon-label {
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  margin-top: auto;
  padding-top: var(--space-2);
}

/* Muted overlay on coming-soon cards */
.tool-card--coming-soon {
  opacity: 0.75;
}

.tool-card--coming-soon:hover {
  opacity: 1;
}


/* -------------------------------------------------------------
   11. Contact / Form
   ------------------------------------------------------------- */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact__intro {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-top: var(--space-4);
  max-width: 42ch;
}

/* Form layout */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: 0.9rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
}

.form-label span {
  color: var(--color-blue);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: var(--color-text);
  background-color: var(--color-white);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  outline: none;
}

.form-input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.form-input:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.12);
}

.form-input.is-invalid {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.08);
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
}

/* Inline validation error message */
.form-error {
  font-size: 0.8125rem;
  color: var(--color-error);
  font-weight: var(--font-weight-medium);
  min-height: 1em;
}

/* Success / error feedback banners */
.form-feedback {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
}

.form-feedback--success {
  background-color: #DCFCE7;
  color: #15803D;
  border: 1px solid #86EFAC;
}

.form-feedback--error {
  background-color: #FEF2F2;
  color: var(--color-error);
  border: 1px solid #FECACA;
}

.form-feedback--error a {
  color: var(--color-error);
  text-decoration: underline;
}


/* -------------------------------------------------------------
   12. Footer
   ------------------------------------------------------------- */
.footer {
  background-color: var(--color-navy);
  color: rgba(255, 255, 255, 0.75);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-8);
  padding-block: var(--space-16);
  align-items: start;
}

/* Brand column */
.footer__brand-name {
  display: block;
  font-size: 1.25rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-white);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.footer__brand-accent {
  color: var(--color-blue-light);
}

.footer__tagline {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.55);
  max-width: 28ch;
}

/* Nav column */
.footer__nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-white);
}

/* Contact column */
.footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__contact-item {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition-fast);
  word-break: break-all;
}

.footer__contact-item:hover {
  color: var(--color-white);
}

/* Bottom bar */
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-block: var(--space-5);
}

.footer__bottom p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.45);
  max-width: none;
  text-align: center;
}


/* -------------------------------------------------------------
   13. Animations & transitions
   ------------------------------------------------------------- */

/* Fade-in-up on scroll (applied via JS IntersectionObserver) */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delay helpers (applied in JS) */
.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }


/* -------------------------------------------------------------
   14. Responsive overrides
   ------------------------------------------------------------- */

/* --- Tablet: ~900px and below --- */
@media (max-width: 900px) {

  /* Nav — hide desktop links, show hamburger */
  .nav__links {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  /* Hero */
  .hero {
    padding-block: var(--space-24) var(--space-20);
  }

  /* About grid → single column */
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  /* Tools grid → 2 columns */
  .tools__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Contact → single column */
  .contact__inner {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  /* Footer → 2 columns */
  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

/* --- Mobile: ~600px and below --- */
@media (max-width: 600px) {

  :root {
    --container-pad: var(--space-4);
    --space-24: 4rem;  /* reduce section padding */
    --space-32: 5rem;
  }

  /* Hero CTA buttons → stack */
  .hero__ctas {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__ctas .btn {
    width: 100%;
    justify-content: center;
  }

  /* Tools grid → single column */
  .tools__grid {
    grid-template-columns: 1fr;
  }

  /* Contact form inner padding */
  .contact-form {
    padding: var(--space-6);
  }

  /* Footer → single column */
  .footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}