/* ==========================================================================
   RAIVA GROUP — Design System
   Signature motif: twin-peak silhouette (Ararat & Sis, Yerevan's skyline)
   used as the hero/section divider — doubles as an "ascending growth" mark.
   Palette: turquoise blue -> soft sage green, on light mist/white grounds.
   Type: Noto Serif (+ Armenian cut) for display, Inter for Latin/Cyrillic
   body, Vazirmatn for Persian (adapted per-script rather than forced).
   ========================================================================== */

:root {
  /* Color */
  --color-primary: #0D7C87;
  --color-primary-light: #17A2AD;
  --color-primary-dark: #095F68;
  --color-secondary: #8FD4A8;
  --color-secondary-dark: #4CAF7D;
  --color-white: #FFFFFF;
  --color-bg: #F6FBFA;
  --color-bg-alt: #EBF6F3;
  --color-ink: #16302F;
  --color-ink-soft: #35504E;
  --color-text-muted: #5B7075;
  --color-border: #DCEEEC;
  --gradient-brand: linear-gradient(135deg, #12909B 0%, #5CB88A 100%);

  /* Shadow */
  --shadow-sm: 0 2px 10px rgba(13, 92, 100, 0.08);
  --shadow-md: 0 12px 32px rgba(13, 92, 100, 0.12);
  --shadow-lg: 0 24px 56px rgba(13, 92, 100, 0.16);

  /* Radius */
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  /* Type scale */
  --font-display: 'Noto Serif', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, 'Segoe UI', sans-serif;
  --step-xs: clamp(0.78rem, 0.75rem + 0.15vw, 0.85rem);
  --step-sm: clamp(0.92rem, 0.88rem + 0.2vw, 1rem);
  --step-md: clamp(1.05rem, 1rem + 0.25vw, 1.15rem);
  --step-lg: clamp(1.4rem, 1.25rem + 0.75vw, 1.85rem);
  --step-xl: clamp(2rem, 1.6rem + 1.8vw, 3.1rem);
  --step-2xl: clamp(2.5rem, 1.9rem + 2.8vw, 4.2rem);

  /* Layout */
  --container-w: 1180px;
  --section-pad: clamp(4rem, 3rem + 4vw, 7rem);
}

html[lang="hy"] {
  --font-display: 'Noto Serif Armenian', 'Noto Serif', Georgia, serif;
  --font-body: 'Noto Sans Armenian', 'Inter', sans-serif;
}

html[lang="fa"] {
  --font-display: 'Vazirmatn', 'Inter', Tahoma, sans-serif;
  --font-body: 'Vazirmatn', 'Inter', Tahoma, sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@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; scroll-behavior: auto !important; }
}
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-bg);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; margin: 0 0 0.6em; color: var(--color-ink); }
p { margin: 0 0 1em; color: var(--color-ink-soft); }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: var(--step-md); }

:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Layout helpers ---------- */
.container { max-width: var(--container-w); margin-inline: auto; padding-inline: clamp(1.25rem, 3vw, 2.5rem); }
.section { padding-block: var(--section-pad); }
.section--alt { background: var(--color-bg-alt); }
.section--white { background: var(--color-white); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--step-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.9em;
}
html[lang="fa"] .eyebrow, html[lang="hy"] .eyebrow { letter-spacing: 0.04em; }

.section-head { max-width: 640px; margin-bottom: clamp(2.2rem, 2rem + 1vw, 3.5rem); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: var(--step-xl); }
.section-head p { font-size: var(--step-md); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.95em 1.9em;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--step-sm);
  border: 2px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn svg { width: 1.1em; height: 1.1em; flex-shrink: 0; }
[dir="rtl"] .btn svg { transform: scaleX(-1); }
.btn-primary { background: var(--color-white); color: var(--color-primary-dark); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { border-color: rgba(255,255,255,0.55); color: var(--color-white); }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--color-white); }
.btn-solid { background: var(--gradient-brand); color: var(--color-white); }
.btn-solid:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost { border-color: var(--color-border); color: var(--color-primary-dark); }
.btn-ghost:hover { border-color: var(--color-primary); background: var(--color-bg-alt); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 251, 250, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; padding-block: 0.9rem; gap: 1.5rem; }
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand svg { height: 40px; width: auto; }
.brand-word { display: flex; flex-direction: column; line-height: 1; }
.brand-word strong { font-family: var(--font-display); font-size: 1.35rem; font-weight: 700; color: var(--color-ink); }
.brand-word span { font-size: 0.62rem; font-weight: 600; letter-spacing: 0.22em; color: var(--color-primary); margin-top: 0.25em; }

.main-nav { display: flex; align-items: center; gap: clamp(1.2rem, 2vw, 2.2rem); }
.main-nav a { font-weight: 600; font-size: var(--step-sm); color: var(--color-ink-soft); position: relative; padding-block: 0.3em; }
.main-nav a::after { content: ""; position: absolute; inset-inline-start: 0; bottom: -2px; height: 2px; width: 0; background: var(--color-primary); transition: width 0.25s ease; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--color-primary-dark); }
.main-nav a:hover::after, .main-nav a[aria-current="page"]::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 0.9rem; }
.lang-switch { position: relative; }
.lang-switch button { display: flex; align-items: center; gap: 0.4em; background: var(--color-white); border: 1px solid var(--color-border); padding: 0.5em 0.9em; border-radius: var(--radius-pill); font-weight: 600; font-size: var(--step-xs); color: var(--color-ink-soft); }
.lang-switch button svg { width: 0.7em; height: 0.7em; transition: transform 0.2s ease; }
.lang-switch[data-open="true"] button svg { transform: rotate(180deg); }
.lang-menu { position: absolute; inset-inline-end: 0; top: calc(100% + 0.6rem); background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-sm); box-shadow: var(--shadow-md); min-width: 168px; padding: 0.4rem; display: none; z-index: 50; }
.lang-switch[data-open="true"] .lang-menu { display: block; }
.lang-menu a { display: flex; align-items: center; gap: 0.6em; padding: 0.55em 0.7em; border-radius: 8px; font-size: var(--step-sm); font-weight: 500; color: var(--color-ink-soft); }
.lang-menu a:hover { background: var(--color-bg-alt); color: var(--color-primary-dark); }
.lang-menu a[aria-current="true"] { color: var(--color-primary); font-weight: 700; }

.nav-toggle { display: none; background: none; border: none; padding: 0.4rem; }
.nav-toggle svg { width: 26px; height: 26px; color: var(--color-ink); }

/* ---------- Hero ---------- */
.hero { position: relative; background: var(--gradient-brand); color: var(--color-white); overflow: hidden; padding-block: clamp(4.5rem, 4rem + 4vw, 8rem) 0; }
.hero .container { position: relative; z-index: 2; padding-bottom: clamp(5rem, 4rem + 5vw, 8rem); }
.hero-inner { max-width: 760px; }
.hero .eyebrow { color: rgba(255,255,255,0.92); }
.hero h1 { color: var(--color-white); font-size: var(--step-2xl); margin-bottom: 0.45em; }
.hero p.lead { color: rgba(255,255,255,0.92); font-size: var(--step-lg); max-width: 620px; margin-bottom: 1.6em; font-family: var(--font-body); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.ridge-divider { position: absolute; inset-inline: 0; bottom: -1px; line-height: 0; z-index: 1; }
.ridge-divider svg { width: 100%; height: clamp(48px, 7vw, 120px); display: block; }

/* ---------- Services ---------- */
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.service-card { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 2rem 1.75rem; transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease; }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.service-icon { width: 56px; height: 56px; border-radius: 14px; background: var(--color-bg-alt); color: var(--color-primary); display: flex; align-items: center; justify-content: center; margin-bottom: 1.3rem; }
.service-icon svg { width: 28px; height: 28px; }
.service-card h3 { font-size: var(--step-lg); margin-bottom: 0.5em; }
.service-card p { font-size: var(--step-sm); margin: 0; }

/* ---------- About teaser (split) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 4vw, 5rem); align-items: center; }
.split-visual { position: relative; }
.quote-panel { background: var(--color-white); border-radius: var(--radius-lg); padding: clamp(2.2rem, 2rem + 1.5vw, 3.2rem); box-shadow: var(--shadow-lg); position: relative; overflow: hidden; }
.quote-panel::before {
  content: "";
  position: absolute; inset-inline-end: -30px; bottom: -30px; width: 220px; height: 220px;
  background: var(--gradient-brand); opacity: 0.08; border-radius: 50%;
}
.quote-panel p { position: relative; font-family: var(--font-display); font-size: var(--step-lg); color: var(--color-ink); font-weight: 600; margin-bottom: 0.9rem; line-height: 1.5; }
.quote-panel .quote-mark { font-family: var(--font-display); font-size: 4rem; color: var(--color-secondary-dark); line-height: 1; display: block; margin-bottom: 0.2rem; }
.quote-cite { display: flex; align-items: center; gap: 0.7rem; margin-top: 1.4rem; position: relative; }
.quote-cite svg { width: 34px; height: 34px; color: var(--color-primary); flex-shrink: 0; }
.quote-cite span { font-size: var(--step-xs); font-weight: 600; color: var(--color-text-muted); }

.split-text h2 { font-size: var(--step-xl); }
.split-text p { font-size: var(--step-md); }

/* ---------- Why us ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.why-item { text-align: start; }
.why-icon { width: 52px; height: 52px; border-radius: 50%; border: 2px solid var(--color-secondary); color: var(--color-primary-dark); display: flex; align-items: center; justify-content: center; margin-bottom: 1.1rem; }
.why-icon svg { width: 24px; height: 24px; }
.why-item h3 { font-size: var(--step-md); margin-bottom: 0.4em; }
.why-item p { font-size: var(--step-sm); margin: 0; }

/* ---------- Markets (about page) ---------- */
.market-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.market-card { padding: 2rem; border-radius: var(--radius-md); background: var(--color-white); border: 1px solid var(--color-border); }
.market-card .eyebrow { margin-bottom: 0.5em; }
.market-card h3 { font-size: var(--step-lg); margin-bottom: 0.5em; }
.market-card p { font-size: var(--step-sm); margin: 0; }

/* ---------- Values grid (about page) ---------- */
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.75rem; }
.value-card { padding: 1rem 0; }
.value-num { font-family: var(--font-display); font-size: var(--step-xl); color: var(--color-secondary-dark); opacity: 0.55; margin-bottom: 0.15em; }
.value-card h3 { font-size: var(--step-md); margin-bottom: 0.4em; }
.value-card p { font-size: var(--step-sm); margin: 0; }

/* ---------- CTA banner ---------- */
.cta-banner { background: var(--gradient-brand); border-radius: var(--radius-lg); padding: clamp(2.5rem, 2rem + 3vw, 4.5rem); text-align: center; color: var(--color-white); }
.cta-banner h2 { color: var(--color-white); font-size: var(--step-xl); margin-bottom: 0.4em; }
.cta-banner p { color: rgba(255,255,255,0.9); font-size: var(--step-md); max-width: 560px; margin-inline: auto 1.6em; }
.cta-banner .btn-group { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; margin-top: 1.6rem; }

/* ---------- Footer ---------- */
.site-footer { background: linear-gradient(160deg, #0D7C87 0%, #0A6B73 100%); color: rgba(255,255,255,0.88); padding-top: clamp(3.5rem, 3rem + 3vw, 5.5rem); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: clamp(2rem, 4vw, 4rem); padding-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,0.18); }
.footer-brand svg { height: 40px; width: auto; margin-bottom: 1.1rem; }
.footer-brand p { color: rgba(255,255,255,0.78); font-size: var(--step-sm); max-width: 320px; }
.footer-col h4 { color: var(--color-white); font-family: var(--font-body); font-size: var(--step-sm); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 1.1rem; }
.footer-col ul li { margin-bottom: 0.7rem; }
.footer-col a { font-size: var(--step-sm); color: rgba(255,255,255,0.78); transition: color 0.2s ease; }
.footer-col a:hover { color: var(--color-white); }
.footer-contact li { display: flex; gap: 0.7em; align-items: flex-start; font-size: var(--step-sm); color: rgba(255,255,255,0.78); }
.footer-contact svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 0.2em; color: var(--color-secondary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-block: 1.6rem; font-size: var(--step-xs); color: rgba(255,255,255,0.65); flex-wrap: wrap; gap: 0.8rem; }

/* ---------- Contact page ---------- */
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(2rem, 4vw, 4rem); align-items: start; }
.contact-card { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: clamp(1.6rem, 1.4rem + 1vw, 2.4rem); margin-bottom: 1.25rem; }
.contact-card h3 { font-size: var(--step-md); margin-bottom: 1rem; }
.info-row { display: flex; gap: 0.9em; align-items: flex-start; margin-bottom: 1rem; }
.info-row:last-child { margin-bottom: 0; }
.info-row svg { width: 22px; height: 22px; color: var(--color-primary); flex-shrink: 0; margin-top: 0.15em; }
.info-row div span { display: block; font-size: var(--step-xs); color: var(--color-text-muted); margin-bottom: 0.2em; }
.info-row div strong, .info-row div a { font-size: var(--step-sm); font-weight: 600; color: var(--color-ink); }
.info-row div a:hover { color: var(--color-primary); }

.dept-list { display: flex; flex-direction: column; gap: 1rem; }
.dept-card { display: flex; gap: 1rem; align-items: flex-start; padding: 1.4rem; border-radius: var(--radius-md); background: var(--color-white); border: 1px solid var(--color-border); }
.dept-icon { width: 46px; height: 46px; border-radius: 12px; background: var(--color-bg-alt); color: var(--color-primary); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.dept-icon svg { width: 22px; height: 22px; }
.dept-card h4 { font-size: var(--step-md); margin-bottom: 0.15em; }
.dept-card .role { font-size: var(--step-xs); font-weight: 600; color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.5em; display: block; }
.dept-card p { font-size: var(--step-sm); margin-bottom: 0.6em; }
.dept-card a.mail { font-size: var(--step-sm); font-weight: 600; color: var(--color-ink); }
.dept-card a.mail:hover { color: var(--color-primary); }

.form-card { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: clamp(1.75rem, 1.5rem + 1.5vw, 3rem); box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-size: var(--step-xs); font-weight: 600; color: var(--color-ink-soft); margin-bottom: 0.5em; }
.field input, .field textarea {
  width: 100%; padding: 0.85em 1em; border: 1.5px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-bg); color: var(--color-ink); transition: border-color 0.2s ease, background 0.2s ease;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--color-primary); background: var(--color-white); }
.field textarea { resize: vertical; min-height: 130px; }
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; }
.form-note { font-size: var(--step-xs); color: var(--color-text-muted); margin-top: 0.9rem; }
.form-alert { padding: 0.9em 1.1em; border-radius: var(--radius-sm); font-size: var(--step-sm); font-weight: 600; margin-bottom: 1.2rem; }
.form-alert--success { background: #E4F6EC; color: #1C7A46; }
.form-alert--error { background: #FCEAEA; color: #B23B3B; }

.map-embed { border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--color-border); margin-top: 1.25rem; }
.map-embed iframe { width: 100%; height: 320px; border: 0; display: block; }

/* ---------- Page hero (about / contact) ---------- */
.page-hero { background: var(--gradient-brand); color: var(--color-white); padding-block: clamp(3.5rem, 3rem + 3vw, 5.5rem) clamp(4.5rem, 4rem + 4vw, 7rem); position: relative; overflow: hidden; }
.page-hero .container { position: relative; z-index: 2; }
.page-hero .eyebrow { color: rgba(255,255,255,0.9); }
.page-hero h1 { color: var(--color-white); font-size: var(--step-2xl); max-width: 700px; }
.page-hero p { color: rgba(255,255,255,0.9); font-size: var(--step-md); max-width: 560px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Alerts / misc ---------- */
.skip-link { position: absolute; inset-inline-start: -9999px; top: 0; background: var(--color-primary); color: #fff; padding: 0.8em 1.2em; z-index: 200; border-radius: 0 0 8px 0; }
.skip-link:focus { inset-inline-start: 0; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .market-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .split-visual { order: -1; max-width: 460px; margin-inline: auto; width: 100%; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 780px) {
  .main-nav { display: none; position: fixed; inset-inline: 0; top: 68px; background: var(--color-white); flex-direction: column; align-items: stretch; padding: 1.5rem; gap: 0; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-md); transform: translateY(-130%); transition: transform 0.3s ease; }
  .main-nav.is-open { transform: translateY(0); display: flex; }
  .main-nav a { padding-block: 0.9rem; border-bottom: 1px solid var(--color-border); }
  .nav-toggle { display: block; }
  .service-grid, .why-grid, .values-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}