/* ================================================
   KB Estate Management — Common Style Sheet
   Mobile-first · Loaded on every page
   ================================================= */

/* --- CUSTOM PROPERTIES --- */
:root {
  --primary-blue: #0A2540;
  --secondary-blue: #0d6efd;
  --accent-crimson: #E63946;
  --stunning-pink: var(--accent-crimson);
  --blue-gradient: linear-gradient(160deg, #0A2540 0%, #0b3d91 50%, #0d6efd 100%);
  --crimson-gradient: linear-gradient(135deg, #E63946 0%, #c1121f 100%);
  --light-neutral: #F8FAFC;
  --text-dark: #0F172A;
  --text-light: #FFFFFF;

  --border: #E2E8F0;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1200px;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(10, 37, 64, 0.06), 0 1px 2px rgba(10, 37, 64, 0.04);
  --shadow-md: 0 4px 16px rgba(10, 37, 64, 0.08);
  --shadow-lg: 0 12px 40px rgba(10, 37, 64, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

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

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

ul {
  list-style: none;
}

/* --- UTILITY --- */
.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--stunning-pink);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-dark);
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.25rem;
  }
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 50px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 1.4s ease, color 1.4s ease, box-shadow 1.4s ease, border-color 1.4s ease;
  text-align: center;
}

.btn--primary {
  background: var(--crimson-gradient);
  color: var(--text-light);
  box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: transparent;
  color: var(--accent-crimson);
  border-color: var(--accent-crimson);
  box-shadow: none;
}

.btn--secondary {
  background: var(--secondary-blue);
  color: var(--text-light);
  border-color: var(--secondary-blue);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  background: transparent;
  color: var(--secondary-blue);
}

.btn--outline {
  background: transparent;
  color: var(--text-light);
  border-color: var(--text-light);
}

.btn--outline:hover,
.btn--outline:focus-visible {
  background: var(--text-light);
  color: var(--primary-blue);
}

.btn--outline-dark {
  background: transparent;
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}

.btn--outline-dark:hover,
.btn--outline-dark:focus-visible {
  background: var(--primary-blue);
  color: var(--text-light);
}

/* ============================================
   TOP BAR OF THE WEBSITE
   ============================================ */
.top-bar {
  background: var(--primary-blue);
  padding: 0.5rem 1rem;
}

.top-bar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  justify-content: flex-start;
}

.top-bar__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  padding: 0.3rem 0;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.top-bar__link:hover,
.top-bar__link:focus-visible {
  color: var(--stunning-pink);
}

.top-bar__link--accent {
  color: var(--text-light);
}

.top-bar__link--accent:hover,
.top-bar__link--accent:focus-visible {
  color: var(--text-light);
}

/* ============================================
   HEADER
   ============================================ */
.header {
  background: var(--text-light);
  border-bottom: 1px solid rgba(10, 37, 64, 0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
}

.header__logo {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--blue-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
}

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

.header__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 101;
}

.header__toggle-bar {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--primary-blue);
  border-radius: 2px;
  transition: var(--transition);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.header__nav {
  position: fixed;
  inset: 0;
  background: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 99;
}

.header__nav--open {
  opacity: 1;
  pointer-events: auto;
}

.header__nav-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.header__nav-link {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  padding: 0.25rem 0;
  transition: var(--transition-fast);
  position: relative;
}

.header__nav-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--crimson-gradient);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header__nav-link:hover::after,
.header__nav-link--active::after {
  width: 100%;
}

.header__nav-link:hover,
.header__nav-link:focus-visible {
  color: var(--stunning-pink);
}

.header__nav-link--active {
  color: var(--stunning-pink);
}

/* Dropdown */
.header__nav-item--has-dropdown {
  position: relative;
}

.header__nav-dropdown {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding-top: 0.5rem;
}

.header__nav-dropdown-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-dark);
  opacity: 0.75;
  transition: var(--transition);
}

.header__nav-dropdown-link:hover,
.header__nav-dropdown-link:focus-visible {
  color: var(--stunning-pink);
  opacity: 1;
}

.header__nav-dropdown--open {
  display: flex;
}

@media (min-width: 768px) {
  .header__nav-item--has-dropdown {
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }

  .header__nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 1.25rem;
    min-width: 170px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    display: flex;
  }

  .header__nav-item--has-dropdown:hover .header__nav-dropdown,
  .header__nav-item--has-dropdown:focus-within .header__nav-dropdown {
    opacity: 1;
    pointer-events: auto;
  }

  .header__nav-dropdown-link {
    font-size: 0.9rem;
    white-space: nowrap;
  }
}

.header__nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.4rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-light);
  background: var(--crimson-gradient);
  border: 2px solid transparent;
  border-radius: 50px;
  transition: background 1.4s ease, color 1.4s ease, box-shadow 1.4s ease, border-color 1.4s ease;
  box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
}

.header__nav-btn:hover,
.header__nav-btn:focus-visible {
  background: transparent;
  color: var(--accent-crimson);
  border-color: var(--accent-crimson);
  box-shadow: none;
}

@media (min-width: 768px) {
  .header__nav-btn {
    font-size: 0.9rem;
    padding: 0.5rem 1.25rem;
  }

  .header__toggle {
    display: none;
  }

  .header__nav {
    position: static;
    opacity: 1;
    pointer-events: auto;
    background: none;
    display: flex;
    align-items: center;
    justify-content: flex-end;
  }

  .header__nav-list {
    flex-direction: row;
    gap: 2rem;
  }

  .header__nav-list li:last-child {
    margin-left: auto;
  }

  .header__nav-link {
    font-size: 0.95rem;
  }
}

/* ============================================
   PAGE HERO (inner pages)
   ============================================ */
.page-hero {
  background: var(--blue-gradient);
  color: var(--text-light);
  padding: 3rem 1rem 3.5rem;
  text-align: center;
  position: relative;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(13, 110, 253, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-hero__title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

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

.page-hero__subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 0.75rem;
  max-width: 32rem;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .page-hero {
    padding: 4.5rem 1rem 5rem;
  }

  .page-hero__title {
    font-size: 2.75rem;
  }

  .page-hero__subtitle {
    font-size: 1.1rem;
  }
}

/* ============================================
   FOOTER SEPARATOR
   ============================================ */
.footer-sep {
  height: 1px;
  width: 50%;
  max-width: 600px;
  margin: 0 auto;
  background: var(--text-light);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--blue-gradient);
  color: var(--text-light);
  padding: 3rem 1rem 1.5rem;
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer__logo {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--blue-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
}

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

.footer__tagline {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.5;
}

.footer__cols {
  display: grid;
  gap: 2rem;
  margin: 2.5rem 0;
}

@media (min-width: 640px) {
  .footer__cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__cols {
    grid-template-columns: repeat(4, 1fr);
  }
}

.footer__col-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stunning-pink);
  margin-bottom: 1rem;
}

.footer__col-list li {
  margin-bottom: 0.5rem;
}

.footer__col-list a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
  transition: var(--transition);
}

.footer__col-list a:hover,
.footer__col-list a:focus-visible {
  color: var(--stunning-pink);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
}