/* =========================================================
   ПАРУС — Черкаський крейсерський яхт-клуб
   Стилі: CSS-змінні, Mobile-First, анімації
   ========================================================= */

:root {
  /* Кольори */
  --color-navy-deep: #0A2540;
  --color-navy-darker: #071B2E;
  --color-navy-mid: #0D3B54;
  --color-blue-accent: #2E86AB;
  --color-gold: #F4C566;
  --color-gold-deep: #C9932E;
  --color-white: #FFFFFF;
  --color-ice: #EAF2F8;
  --color-text-muted: #B7C7D6;

  /* Типографіка */
  /*   --font-display: 'Cormorant Garamond', Georgia, serif; */
  --font-display: arial, Georgia, serif;
  --font-body: 'Manrope', 'Segoe UI', sans-serif;

  /* Розміри */
  --container-width: 1180px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --header-height: 84px;

  /* Тіні */
  --shadow-soft: 0 10px 30px rgba(7, 27, 46, 0.18);
  --shadow-strong: 0 20px 50px rgba(7, 27, 46, 0.35);

  /* Переходи */
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================================
   Скидання стилів
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-navy-darker);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0 0 0.5em;
  color: var(--color-navy-deep);
  line-height: 1.15;
  font-weight: 700;
}

p { margin: 0 0 1em; }
ul { list-style: none; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-gold);
  color: var(--color-navy-deep);
  padding: 12px 20px;
  z-index: 2000;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* =========================================================
   Кнопки
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  border: 2px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-deep) 100%);
  color: var(--color-navy-darker);
  box-shadow: var(--shadow-soft);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: var(--shadow-strong); }
.btn-accent:active { transform: translateY(0); }

.btn-ghost {
  background: rgba(234, 242, 248, 0.08);
  color: var(--color-white);
  border-color: rgba(234, 242, 248, 0.5);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover { background: rgba(234, 242, 248, 0.18); border-color: var(--color-white); }

.btn-outline {
  background: transparent;
  color: var(--color-navy-deep);
  border-color: var(--color-navy-deep);
}
.btn-outline:hover { background: var(--color-navy-deep); color: var(--color-white); }

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-height);
  border-bottom: 1px solid rgba(234, 242, 248, 0.08);
  transition: box-shadow var(--transition-base);
}

/*
 * Розмиття фону шапки винесене в ::before, а не задане напряму на .site-header.
 * Це принципово важливо: filter/backdrop-filter на елементі створює новий
 * containing block для його position:fixed нащадків. Якби backdrop-filter
 * лишався на .site-header, мобільне меню (.main-nav, теж position:fixed)
 * позиціонувалось би відносно 84-пікселевої шапки, а не всього екрана,
 * і мобільне меню виглядало б обрізаним/зламаним.
 */
.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(10, 37, 64, 0.72);
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  transition: background var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: 0 6px 24px rgba(7, 27, 46, 0.35);
}

.site-header.is-scrolled::before {
  background: rgba(10, 37, 64, 0.95);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand { display: inline-flex; align-items: center; }
.brand-logo { height: 48px; width: auto; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  position: fixed;
  top: var(--header-height);
  left: 0; right: 0;
  bottom: 0;
  background: var(--color-navy-deep);
  flex-direction: column;
  justify-content: center;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  padding: 40px 24px;
  overflow-y: auto;
}

.main-nav.is-open { transform: translateX(0); }

.nav-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  width: 100%;
}

.nav-link {
  color: var(--color-ice);
  font-size: 1.3rem;
  font-family: var(--font-display);
  font-weight: 600;
  position: relative;
  padding-bottom: 4px;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--color-gold);
  transition: width var(--transition-fast);
}
.nav-link:hover::after, .nav-link:focus-visible::after { width: 100%; }

.nav-cta { margin-top: 12px; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  margin-top: 20px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(234, 242, 248, 0.08);
  border: 1px solid rgba(234, 242, 248, 0.2);
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--color-ice);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 6px 14px;
  border-radius: 999px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-btn.is-active {
  background: var(--color-gold);
  color: var(--color-navy-darker);
}

.lang-btn:not(.is-active):hover {
  background: rgba(234, 242, 248, 0.14);
}

.burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  padding: 0;
  z-index: 1001;
}

.burger span {
  display: block;
  height: 3px;
  width: 28px;
  margin: 0 auto;
  background: var(--color-ice);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast), background var(--transition-fast);
}

.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(7, 27, 46, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  z-index: 999;
}
.nav-backdrop.is-visible { opacity: 1; pointer-events: auto; }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh; /* фолбек для браузерів без підтримки svh */
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--color-white);
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,27,46,0.55) 0%, rgba(7,27,46,0.25) 45%, rgba(7,27,46,0.75) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: var(--header-height);
  padding-bottom: 80px;
  max-width: 760px;
  animation: heroRise 1s var(--transition-base) both;
}

@keyframes heroRise {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 14px;
}

.hero-title {
  font-size: clamp(2.1rem, 6vw, 3.8rem);
  color: var(--color-white);
  margin-bottom: 0.4em;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--color-ice);
  max-width: 560px;
  margin-bottom: 2em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-wave {
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  z-index: 2;
  line-height: 0;
}
.hero-wave svg { width: 100%; height: 60px; display: block; }
.hero-wave path { fill: var(--color-white); }

/* =========================================================
   Секції — загальне
   ========================================================= */
.section { padding: 88px 0; }

.section-eyebrow {
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--color-blue-accent);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  max-width: 640px;
  margin-bottom: 0.6em;
}

.section-lead {
  max-width: 640px;
  color: var(--color-navy-mid);
  font-size: 1.05rem;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--transition-base), transform 0.7s var(--transition-base);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* =========================================================
   Про клуб
   ========================================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-top: 40px;
}

.about-text p { color: var(--color-navy-mid); }
.about-cta { margin-top: 8px; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.stat-card {
  background: linear-gradient(160deg, var(--color-navy-deep), var(--color-navy-mid));
  color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-fast);
}
.stat-card:hover { transform: translateY(-4px); }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--color-gold);
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-ice);
  margin-top: 4px;
}

.feature-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 56px;
}

.feature-col {
  background: var(--color-ice);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  border: 1px solid rgba(10, 37, 64, 0.06);
}

.feature-icon {
  width: 56px;
  height: 56px;
  color: var(--color-blue-accent);
  margin-bottom: 16px;
}
.feature-icon svg { width: 100%; height: 100%; }

.feature-col h3 {
  font-size: 1.3rem;
  margin-bottom: 0.4em;
}
.feature-col p { color: var(--color-navy-mid); margin: 0; }

/* Спортивне життя (підрозділ "Про клуб") */
.sport-life { margin-top: 64px; }

.subsection-title {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-bottom: 0.4em;
}

.subsection-lead {
  color: var(--color-navy-mid);
  max-width: 620px;
  margin-bottom: 32px;
}

.sport-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.sport-card {
  background: var(--color-white);
  border: 1px solid rgba(10, 37, 64, 0.1);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.sport-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-strong); }

.sport-icon {
  width: 46px;
  height: 46px;
  color: var(--color-gold-deep);
  margin-bottom: 14px;
}
.sport-icon svg { width: 100%; height: 100%; }

.sport-card h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--color-navy-deep);
  margin: 0 0 0.4em;
}
.sport-card p { color: var(--color-navy-mid); margin: 0; font-size: 0.95rem; }

/* =========================================================
   Календар
   ========================================================= */
.calendar { background: var(--color-ice); }

.event-list {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.event-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.event-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-strong); }

.event-date {
  flex: 0 0 auto;
  width: 72px;
  text-align: center;
  background: var(--color-navy-deep);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  padding: 10px 4px;
}
.event-day { display: block; font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; color: var(--color-gold); }
.event-month { display: block; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; }

.event-body h3 { font-size: 1.15rem; margin-bottom: 0.3em; }
.event-body p { color: var(--color-navy-mid); margin: 0; }

.event-status {
  color: var(--color-navy-mid);
  font-size: 1rem;
}
.event-status-error { color: #C0392B; }

/* =========================================================
   Форма зворотного зв'язку
   ========================================================= */
.contact-section { background: var(--color-navy-deep); color: var(--color-white); }
.contact-section .section-eyebrow { color: var(--color-gold); }
.contact-section .section-title { color: var(--color-white); }
.contact-section .section-lead { color: var(--color-text-muted); }

.contact-form {
  margin-top: 40px;
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.honeypot-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.form-group { display: flex; flex-direction: column; gap: 8px; }

.form-group label {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  color: var(--color-ice);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid rgba(234, 242, 248, 0.25);
  background: rgba(234, 242, 248, 0.06);
  color: var(--color-white);
  font-size: 1rem;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(234, 242, 248, 0.5); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-gold);
  background: rgba(234, 242, 248, 0.1);
  outline: none;
}

.form-group select option { color: var(--color-navy-darker); }

.form-group.has-error input,
.form-group.has-error select { border-color: #E06C63; }

.form-error {
  min-height: 1.1em;
  font-size: 0.8rem;
  color: #F3A69E;
}

.form-submit {
  align-self: flex-start;
  margin-top: 8px;
  position: relative;
}

.form-submit[disabled] { opacity: 0.7; cursor: not-allowed; }

.form-status {
  min-height: 1.4em;
  font-weight: 600;
  font-size: 0.95rem;
}
.form-status.success { color: #8FD6A6; }
.form-status.error { color: #F3A69E; }

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  background: var(--color-navy-darker);
  color: var(--color-ice);
  padding-top: 72px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 56px;
}

.footer-logo { height: 44px; margin-bottom: 16px; }
.footer-brand p { color: var(--color-text-muted); max-width: 320px; }

.social-links { display: flex; gap: 12px; margin-top: 16px; }

.social-link {
  width: 42px; height: 42px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(234, 242, 248, 0.08);
  color: var(--color-ice);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}
.social-link svg { width: 20px; height: 20px; }
.social-link:hover { background: var(--color-gold); color: var(--color-navy-darker); transform: translateY(-3px); }

.footer-col h3 {
  color: var(--color-white);
  font-size: 1.1rem;
  margin-bottom: 18px;
}

.footer-list { display: flex; flex-direction: column; gap: 10px; }
.footer-list a { color: var(--color-text-muted); transition: color var(--transition-fast); }
.footer-list a:hover { color: var(--color-gold); }

.map-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  line-height: 0;
}
.map-frame iframe { border: 0; }

.footer-bottom {
  border-top: 1px solid rgba(234, 242, 248, 0.08);
  padding: 22px 0;
}
.footer-bottom-inner {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* =========================================================
   Планшети (>= 640px)
   ========================================================= */
@media (min-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .sport-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* =========================================================
   Планшети великі / малі ноутбуки (>= 900px)
   ========================================================= */
@media (min-width: 900px) {
  .main-nav {
    position: static;
    flex-direction: row;
    transform: none;
    background: transparent;
    padding: 0;
    height: auto;
    width: auto;
    overflow: visible;
  }
  .nav-list { flex-direction: row; gap: 32px; }
  .nav-link { font-size: 1rem; }
  .burger, .nav-backdrop { display: none; }
  .lang-switch { margin-top: 0; margin-left: 8px; }

  .about-grid { grid-template-columns: 1.1fr 0.9fr; align-items: start; }
  .feature-cols { grid-template-columns: 1fr 1fr; }
  .sport-grid { grid-template-columns: repeat(4, 1fr); }
  .event-list { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr; }
}

/* =========================================================
   Десктоп (>= 1200px)
   ========================================================= */
@media (min-width: 1200px) {
  .section { padding: 120px 0; }
}

.form-group-checkbox {
  margin-bottom: 1.5rem;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  margin-top: 0.2rem;
  cursor: pointer;
}