/* =========================================================
   کیانویج — سامانهٔ طراحی مشترک
   پالت ایرانی سنتی: فیروزه‌ای، طلایی، کرم، سرمه‌ای و چوب
   ========================================================= */

:root{
  /* ---- پالت جدید: کلاسیک و موزه‌ای (زرشکی/طلایی/کرم/زغالی) ---- */
  --maroon:       #6C1026;
  --maroon-2:     #8f1c38;
  --maroon-deep:  #3f0a18;
  --maroon-soft:  #a94a5e;
  --gold:         #B78F3A;
  --gold-2:       #D8B45E;
  --gold-deep:    #8a6d1c;
  --gold-matte:   #B08D57;
  --ink:          #241A1B;
  --charcoal:     #2C2C2C;
  --wood:         #7A675A;
  --wood-deep:    #4B3621;
  --wood-soft:    #a9917f;
  --parchment:    #F4E9D8;
  --parchment-2:  #F2E3CD;
  --parchment-3:  #e6d2ab;
  --bone:         #FAF7F2;
  --carnelian:    var(--maroon);
  --carnelian-2:  var(--maroon-2);
  /* نام‌های قبلی برای سازگاری با بقیه‌ی فایل حفظ شده‌اند اما به پالت جدید اشاره می‌کنند */
  --lapis:      var(--maroon-deep);
  --lapis-soft: var(--maroon);
  --lapis-2:    var(--wood-deep);
  --lapis-glow: var(--gold-2);
  --firuze:     var(--maroon);
  --firuze-2:   var(--gold-2);
  --firuze-soft:var(--maroon-deep);
  --ink-text:   var(--charcoal);
  --cream-text: var(--bone);
  --shadow-lg:  0 20px 50px rgba(20, 14, 8, .40);
  --shadow-sm:  0 6px 18px rgba(20, 14, 8, .22);
  --radius:     10px;
  --font-display: 'Aref Ruqaa', 'Vazirmatn', serif;
  --font-body:    'Vazirmatn', Tahoma, sans-serif;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  background: var(--parchment);
  color: var(--ink-text);
  direction: rtl;
  -webkit-font-smoothing: antialiased;
  animation: kvPageIn .6s ease both;
}
@keyframes kvPageIn{
  from{ opacity:0; }
  to{ opacity:1; }
}

/* ---------- نوار پیشرفت اسکرول ---------- */
#kvScrollProgress{
  position: fixed; inset-inline: 0; top: 0; height: 3px; z-index: 1000;
  background: linear-gradient(90deg, var(--maroon), var(--gold-2), var(--maroon));
  background-size: 200% 100%;
  transform-origin: right;
  transform: scaleX(0);
  animation: kvProgressShimmer 3s linear infinite;
}
@keyframes kvProgressShimmer{
  from{ background-position: 0% 0; }
  to{ background-position: 200% 0; }
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration:none; }
::selection{ background: var(--gold-2); color: var(--ink); }

/* ---------- بافت زمینه‌ی تیره (فیروزه‌ای/چوب/سرمه‌ای) ---------- */
.on-lapis{
  position: relative;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(216,180,94,.14), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(108,16,38,.42), transparent 55%),
    linear-gradient(180deg, var(--ink), var(--wood-deep) 55%, var(--maroon-deep));
  background-size: 200% 200%;
  animation: kvGradientDrift 18s ease infinite;
  color: var(--cream-text);
}
.on-lapis::after{
  content:'';
  position:absolute; inset:0; pointer-events:none; z-index:1;
  background: radial-gradient(280px circle at var(--mx,50%) var(--my,50%), rgba(216,180,94,.16), transparent 70%);
  opacity:0; transition: opacity .4s ease;
}
.on-lapis:hover::after{ opacity:1; }
.on-lapis > *{ position: relative; z-index:2; }
@keyframes kvGradientDrift{
  0%,100%{ background-position: 0% 0%; }
  50%{ background-position: 100% 100%; }
}

/* ---------- عنصر امضا: نوار حجاری نگهبانان ---------- */
.frieze{
  height: 34px;
  color: var(--gold);
  background-image: url('assets/frieze.svg');
  background-repeat: repeat-x;
  background-size: 62px auto;
  background-position: center;
  opacity: .92;
  animation: kvFriezeDrift 30s linear infinite;
}
@keyframes kvFriezeDrift{
  from{ background-position-x: 0; }
  to{ background-position-x: 620px; }
}
@media (prefers-reduced-motion: reduce){ .frieze{ animation:none; } }
.frieze.on-parchment{ color: var(--gold-deep); opacity:.55; }
.frieze-band{
  background: linear-gradient(180deg, var(--ink), var(--lapis));
  border-top: 1px solid rgba(231,200,118,.25);
  border-bottom: 1px solid rgba(231,200,118,.25);
}

.rosette{
  width: 22px; height: 22px;
  color: var(--gold);
  background-image: url('assets/rosette.svg');
  background-repeat: no-repeat;
  background-size: contain;
  display:inline-block;
}
.rosette.small{ width:16px; height:16px; }

/* ---------- تیتراژ ---------- */
h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.5;
  color: var(--lapis);
  margin: 0 0 .5em;
}
.on-lapis h1, .on-lapis h2, .on-lapis h3{ color: var(--gold-2); }

.eyebrow{
  display:inline-flex; align-items:center; gap:.5em;
  font-family: var(--font-body);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--gold-deep);
  text-transform: none;
  margin-bottom: .6em;
}
.on-lapis .eyebrow{ color: var(--gold-2); }

/* ---------- دکمه‌ها ---------- */
.btn{
  position: relative;
  display:inline-flex; align-items:center; gap:.5em;
  padding: .85em 1.8em;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  cursor:pointer;
  overflow: hidden;
  transition: transform .3s cubic-bezier(.34,1.56,.64,1), box-shadow .3s ease, background .25s ease;
}
.btn:active{ transform: scale(.95); }
.btn .kv-ripple{
  position: absolute; border-radius: 50%; pointer-events: none;
  background: rgba(255,255,255,.5);
  transform: scale(0);
  animation: kvRipple .6s ease-out;
}
@keyframes kvRipple{ to{ transform: scale(3); opacity:0; } }
.btn-gold{
  background: linear-gradient(120deg, var(--gold-2), var(--gold), var(--gold-2));
  background-size: 220% 100%;
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  animation: kvGoldSheen 5s ease-in-out infinite;
}
@keyframes kvGoldSheen{
  0%,100%{ background-position: 0% 0; }
  50%{ background-position: 100% 0; }
}
.btn-gold:hover{ transform: translateY(-3px) scale(1.03); box-shadow: 0 14px 32px rgba(108,16,38,.35), var(--shadow-lg); }
.btn-outline{
  border-color: rgba(216,180,94,.55);
  color: var(--gold-2);
  background: transparent;
}
.btn-outline:hover{ background: rgba(216,180,94,.12); transform: translateY(-3px); border-color: var(--gold-2); }

/* ---------- درخشش نبض‌دار برای فراخوان‌های کلیدی ---------- */
.btn-glow{ animation: kvPulseGlow 2.4s ease-in-out infinite; }
@keyframes kvPulseGlow{
  0%,100%{ box-shadow: 0 0 0 0 rgba(216,180,94,.55), var(--shadow-sm); }
  50%{ box-shadow: 0 0 0 10px rgba(216,180,94,0), var(--shadow-sm); }
}

/* ============ هدر و ناوبری ============ */
.site-header{
  position: sticky; top:0; z-index: 500;
  background: linear-gradient(180deg, var(--ink), var(--lapis));
  border-bottom: 1px solid rgba(231,200,118,.28);
  transition: box-shadow .3s ease;
}
.site-header.kv-scrolled{ box-shadow: var(--shadow-lg); }
.navbar{
  max-width: 1180px;
  margin: 0 auto;
  display:flex; align-items:center; justify-content:space-between;
  padding: .7rem 1.1rem;
  gap: 1rem;
}
.navbar .logo{
  display:flex; align-items:center; gap:.6em;
  font-family: var(--font-display);
  color: var(--gold-2);
  font-size: 1.3rem;
}
.navbar .logo-img{
  width:40px; height:40px; border-radius:50%; border:2px solid var(--gold); object-fit:cover;
  transition: transform .4s ease, box-shadow .4s ease;
  animation: kvLogoBreathe 4s ease-in-out infinite;
}
@keyframes kvLogoBreathe{
  0%,100%{ box-shadow: 0 0 0 0 rgba(216,180,94,.45); }
  50%{ box-shadow: 0 0 0 6px rgba(216,180,94,0); }
}
.navbar .logo:hover .logo-img{ transform: rotate(12deg) scale(1.08); }
.menu-btn{
  width:42px; height:42px; border-radius:50%;
  border:1px solid rgba(216,180,94,.4);
  background: rgba(216,180,94,.06);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:5px;
  cursor:pointer;
  transition: background .25s ease, transform .25s ease;
}
.menu-btn:hover{ transform: scale(1.08); background: rgba(216,180,94,.14); }
.menu-btn span{
  width:18px; height:2px; background: var(--gold-2); border-radius:2px;
  transition: transform .3s ease, opacity .3s ease;
}
.menu-btn.kv-open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.menu-btn.kv-open span:nth-child(2){ opacity:0; }
.menu-btn.kv-open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }
.navbar .social-icons{ display:flex; gap:.9em; font-size:1.05rem; color: var(--gold-2); }
.navbar .social-icons a{ opacity:.85; transition:opacity .25s, transform .25s; display:inline-block; }
.navbar .social-icons a:hover{ opacity:1; transform: translateY(-3px) scale(1.15); }

/* ---------- خط زیر لینک‌ها با انیمیشن ---------- */
.side-menu a{ position: relative; }
.rosette{ transition: transform .5s ease; }
.side-menu a:hover .rosette, a:hover > .rosette{ transform: rotate(90deg); }

.side-menu{
  position: fixed; inset-inline-start: -320px; top:0; bottom:0;
  width: 300px;
  background: linear-gradient(180deg, var(--ink), var(--lapis));
  border-inline-end: 1px solid rgba(231,200,118,.35);
  z-index: 900;
  transition: inset-inline-start .35s ease;
  padding: 1.5rem 1.2rem;
  overflow-y:auto;
}
.side-menu.active{ inset-inline-start: 0; }
.side-menu li{ opacity:0; transform: translateX(24px); }
.side-menu.active li{
  animation: kvMenuItemIn .45s ease forwards;
}
.side-menu.active li:nth-child(1){ animation-delay: .05s; }
.side-menu.active li:nth-child(2){ animation-delay: .09s; }
.side-menu.active li:nth-child(3){ animation-delay: .13s; }
.side-menu.active li:nth-child(4){ animation-delay: .17s; }
.side-menu.active li:nth-child(5){ animation-delay: .21s; }
.side-menu.active li:nth-child(6){ animation-delay: .25s; }
.side-menu.active li:nth-child(7){ animation-delay: .29s; }
.side-menu.active li:nth-child(8){ animation-delay: .33s; }
.side-menu.active li:nth-child(n+9){ animation-delay: .36s; }
@keyframes kvMenuItemIn{ to{ opacity:1; transform:none; } }
.side-menu .menu-head{
  display:flex; align-items:center; gap:.6em;
  color: var(--gold-2); font-family: var(--font-display); font-size:1.3rem;
  padding-bottom: 1rem; margin-bottom: 1rem;
  border-bottom: 1px solid rgba(231,200,118,.25);
}
.side-menu ul{ list-style:none; margin:0; padding:0; }
.side-menu li{ border-bottom: 1px solid rgba(231,200,118,.12); }
.side-menu a{
  display:flex; align-items:center; gap:.6em;
  padding: .85em .3em;
  color: var(--cream-text);
  font-size: .98rem;
  transition: color .2s, padding-inline-start .2s;
}
.side-menu a:hover{ color: var(--gold-2); padding-inline-start: .5em; }
.overlay{
  position: fixed; inset:0; background: rgba(6,12,26,.6);
  opacity:0; pointer-events:none; transition: opacity .3s ease; z-index: 800;
}
.overlay.active{ opacity:1; pointer-events:auto; }

/* ============ فوتر مشترک ============ */
.site-footer{
  position: relative;
  background:
    radial-gradient(700px 300px at 12% 0%, rgba(183,143,58,.12), transparent 60%),
    linear-gradient(165deg, var(--ink) 0%, #2a1a12 60%, #331b13 100%);
  color: var(--cream-text);
  padding: 3.2rem 1.2rem 1.6rem;
  margin-top: 3rem;
}
.site-footer::before{
  content:'';
  position:absolute; inset-inline:0; top:0; height:3px;
  background: linear-gradient(90deg, transparent, var(--firuze-2), var(--gold-2), var(--firuze-2), transparent);
}
.footer-inner{
  max-width: 1100px; margin: 0 auto;
  display:grid; gap:2rem;
  grid-template-columns: 1.3fr 1fr 1fr;
}
.site-footer h4{ color: var(--gold-2); font-size:1.05rem; margin-bottom:.8em; }
.site-footer p{ color: rgba(247,240,221,.75); line-height:2; font-size:.92rem; }
.site-footer ul{ list-style:none; margin:0; padding:0; }
.site-footer li{ margin-bottom:.5em; }
.site-footer a{ color: rgba(247,240,221,.82); font-size:.92rem; transition:color .2s; }
.site-footer a:hover{ color: var(--gold-2); }
.footer-social{ display:flex; gap:1em; font-size:1.2rem; margin-top:.6em; }
.footer-social a:hover{ color: var(--firuze-2); }
.footer-bottom{
  max-width:1100px; margin: 2rem auto 0; padding-top:1.4rem;
  border-top:1px solid rgba(231,200,118,.18);
  text-align:center; font-size:.82rem; color: rgba(247,240,221,.55);
}
@media (max-width: 760px){
  .footer-inner{ grid-template-columns: 1fr; text-align:center; }
  .footer-social{ justify-content:center; }
}

/* ============ دکمه بازگشت به بالا ============ */
#scrollToTopBtn{
  position: fixed; inset-inline-end: 22px; bottom: 22px;
  width:46px; height:46px; border-radius:50%;
  background: linear-gradient(180deg, var(--gold-2), var(--gold));
  color: var(--ink); border:none; font-size:1.2rem;
  display:none; align-items:center; justify-content:center;
  cursor:pointer; box-shadow: var(--shadow-lg); z-index: 600;
  transition: transform .25s cubic-bezier(.34,1.56,.64,1), box-shadow .25s ease;
  animation: kvFadeUp .35s ease both;
}
#scrollToTopBtn:hover{ transform: translateY(-4px) scale(1.08); box-shadow: 0 16px 30px rgba(108,16,38,.4); }
#scrollToTopBtn:active{ transform: scale(.92); }
@keyframes kvFadeUp{ from{ opacity:0; transform: translateY(16px);} to{ opacity:1; transform:none; } }

/* ============ انیمیشن ورود عناصر ============ */
.kv-reveal{
  opacity:0; transform: translateY(28px) scale(.97);
  filter: blur(2px);
  transition: opacity .7s cubic-bezier(.22,.9,.32,1), transform .7s cubic-bezier(.22,.9,.32,1), filter .7s ease;
}
.kv-reveal.kv-visible{ opacity:1; transform:none; filter:none; }
@media (prefers-reduced-motion: reduce){
  .kv-reveal{ opacity:1; transform:none; filter:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* ---------- کارت‌ها و لینک‌های محتوا: بلندشدن + درخشش هنگام هاور ---------- */
.card, .poet-item, .timeline-item{
  transition: transform .35s cubic-bezier(.22,.9,.32,1), box-shadow .35s ease, border-color .35s ease;
}
.card:hover, .poet-item:hover, .timeline-item:hover{
  transform: translateY(-6px);
  box-shadow: 0 18px 38px rgba(108,16,38,.22), var(--shadow-lg);
}
.card img, .poet-item img{ transition: transform .5s ease; }
.card:hover img, .poet-item:hover img{ transform: scale(1.06); }

/* ============ بردکرامب صفحات محتوا ============ */
.breadcrumb{
  max-width: 900px; margin: 1.2rem auto 0; padding: 0 1.2rem;
  font-size:.85rem; color: var(--gold-deep);
  display:flex; align-items:center; gap:.5em;
}
.breadcrumb a{
  color: var(--lapis-soft); font-weight:600;
  background-image: linear-gradient(var(--carnelian), var(--carnelian));
  background-repeat: no-repeat; background-size: 0% 1.5px; background-position: 0 100%;
  transition: background-size .3s ease, color .25s ease;
  padding-bottom: 2px;
}
.breadcrumb a:hover{ color: var(--carnelian); background-size: 100% 1.5px; }

@media (max-width: 640px){
  .navbar .logo span.logo-text{ font-size:1.05rem; }
  .navbar{ padding:.6rem .8rem; }
}

/* ============ خط زیر تیترهای بخش (کشیده‌شدن هنگام ورود) ============ */
.section-head h2, .kv-underline{
  position: relative; display:inline-block;
}
.section-head h2::after, .kv-underline::after{
  content:''; position:absolute; bottom:-8px; inset-inline-start:50%;
  width:0; height:3px; border-radius:3px;
  background: linear-gradient(90deg, var(--maroon), var(--gold-2));
  transform: translateX(50%);
  transition: width .6s cubic-bezier(.22,.9,.32,1) .15s;
}
.kv-visible .section-head h2::after,
.section-head.kv-visible h2::after,
.kv-visible.kv-underline::after{ width: 64px; }

/* ============ گذار محو هنگام خروج از صفحه (رفتن به لینک) ============ */
body.kv-leaving{ animation: kvPageOut .25s ease forwards; }
@keyframes kvPageOut{ to{ opacity:0; transform: scale(.99); } }

/* ============ ذرات شناور تزئینی روی بخش‌های تیره ============ */
.kv-dust{ position:absolute; inset:0; overflow:hidden; pointer-events:none; z-index:1; }
.kv-dust span{
  position:absolute; bottom:-10px; width:4px; height:4px; border-radius:50%;
  background: var(--gold-2); opacity:.55;
  animation: kvDustRise linear infinite;
}
@keyframes kvDustRise{
  from{ transform: translateY(0) translateX(0); opacity:.55; }
  to{ transform: translateY(-320px) translateX(var(--drift, 20px)); opacity:0; }
}

/* ============ کارت‌های سه‌بعدی (تیلت با ماوس) ============ */
.kv-tilt{ transform-style: preserve-3d; will-change: transform; transition: transform .15s ease-out; }

/* ============ آیکون فلش متحرک داخل دکمه‌ها ============ */
.btn i, .btn svg{ transition: transform .3s ease; }
.btn:hover i.fa-arrow-left, .btn:hover i.fa-arrow-right,
.btn:hover i.fa-chevron-left, .btn:hover i.fa-chevron-right{ transform: translateX(-4px); }

@media (prefers-reduced-motion: reduce){
  .kv-dust span, .btn-gold, .frieze, .on-lapis, .hero-column, .hero-rosette, .hero-title{ animation:none !important; }
}

/* ============ نماد‌های پس‌زمینه: منشور کوروش، طاق بستان، تخت جمشید ============ */
.kv-monument-layer{
  position:absolute; inset:0; overflow:hidden; pointer-events:none; z-index:-1;
}
.kv-monument{
  position:absolute;
  background-color: var(--gold-2);
  opacity:.24;
  -webkit-mask-repeat:no-repeat; mask-repeat:no-repeat;
  -webkit-mask-size:contain; mask-size:contain;
  -webkit-mask-position:center; mask-position:center;
}
.kv-m-cylinder{
  width: 220px; height: 132px;
  -webkit-mask-image:url('assets/cyrus-cylinder.svg'); mask-image:url('assets/cyrus-cylinder.svg');
  inset-inline-start: -30px; top: 14%;
  animation: kvMonumentDriftA 22s ease-in-out infinite;
}
.kv-m-taqbostan{
  width: 150px; height: 190px;
  -webkit-mask-image:url('assets/taqbostan.svg'); mask-image:url('assets/taqbostan.svg');
  inset-inline-end: 4%; top: 6%;
  animation: kvMonumentDriftB 26s ease-in-out infinite;
}
.kv-m-persepolis{
  width: 120px; height: 230px;
  -webkit-mask-image:url('assets/persepolis.svg'); mask-image:url('assets/persepolis.svg');
  inset-inline-start: 8%; bottom: -6%;
  animation: kvMonumentDriftC 24s ease-in-out infinite;
}
@keyframes kvMonumentDriftA{
  0%,100%{ transform: translateY(0) rotate(0deg); opacity:.24; }
  50%{ transform: translateY(-16px) rotate(-1.5deg); opacity:.32; }
}
@keyframes kvMonumentDriftB{
  0%,100%{ transform: translateY(0) rotate(0deg); opacity:.22; }
  50%{ transform: translateY(14px) rotate(1.5deg); opacity:.30; }
}
@keyframes kvMonumentDriftC{
  0%,100%{ transform: translateY(0) scale(1); opacity:.20; }
  50%{ transform: translateY(-10px) scale(1.03); opacity:.28; }
}
@media (max-width: 760px){
  .kv-m-taqbostan{ width:100px; height:126px; }
  .kv-m-cylinder{ width:150px; height:90px; }
  .kv-m-persepolis{ width:84px; height:160px; }
}
@media (prefers-reduced-motion: reduce){
  .kv-monument{ animation:none !important; }
}