/* ===== Reset and base styles ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #121212; /* زغال‌سنگی تیره */
  color: #f0e6d2; /* کرم ملایم */
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  user-select: text;
}

/* ===== Direction and language based adjustments ===== */
html[lang="fa"],
html[lang="ar"] {
  direction: rtl;
  unicode-bidi: embed;
}

html[lang="en"],
html[lang="de"] {
  direction: ltr;
  unicode-bidi: embed;
}

/* ===== Site header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10000;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: linear-gradient(90deg, rgba(30, 30, 30, 0.9), rgba(60, 60, 60, 0.9));
  backdrop-filter: blur(12px) saturate(180%);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
  border-bottom: 2px solid #d4af37;
  user-select: none;
  direction: ltr;
  text-align: center;
  transition: background-color 0.3s ease;
}

.site-header:hover {
  background: linear-gradient(90deg, rgba(30, 30, 30, 1), rgba(70, 70, 70, 1));
}

/* ===== Logo ===== */
#logo {
  height: 52px;
  border-radius: 12px;
  filter: drop-shadow(0 0 8px #d4af37);
  cursor: pointer;
  transition: transform 0.3s ease, filter 0.3s ease;
}
#logo:hover {
  transform: scale(1.12);
  filter: drop-shadow(0 0 20px #f5a623);
}

/* ===== Main navigation ===== */
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.6rem;
  margin: 0;
  padding: 0;
  direction: ltr;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  user-select: none;
  text-align: center;
}

.main-nav ul li a {
  color: #d4af37;
  font-weight: 700;
  font-size: clamp(0.9rem, 1vw, 1.1rem);
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 10px;
  text-shadow: 0 0 6px rgba(212, 175, 55, 0.6);
  transition: background-color 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
  cursor: default;
}

.main-nav ul li a:hover,
.main-nav ul li a:focus,
.main-nav ul li a.active {
  background-color: #f5a623;
  color: #121212;
  outline: none;
  box-shadow: 0 0 18px #f5a623;
  cursor: pointer;
}

/* ===== Language switcher ===== */
.lang-switcher {
  display: inline-flex !important;
  flex-direction: row;
  gap: 1rem;
  margin-left: auto;
  direction: ltr !important;
  flex-wrap: nowrap;
}

.lang-btn {
  background: transparent;
  border: 2.5px solid #d4af37;
  color: #d4af37;
  padding: 0.4rem 1.1rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: clamp(0.9rem, 1vw, 1.1rem);
  cursor: pointer;
  min-width: 48px;
  text-align: center;
  user-select: none;
  letter-spacing: 0.03em;
  text-shadow: 0 0 6px rgba(212, 175, 55, 0.8);
  order: 0;
  transition: background-color 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
}
.lang-btn[data-lang="en"] { order: 1; }
.lang-btn[data-lang="fa"] { order: 2; }
.lang-btn[data-lang="de"] { order: 3; }
.lang-btn[data-lang="ar"] { order: 4; }

.lang-btn[aria-pressed="true"] {
  background-color: #f5a623;
  color: #121212;
  border-color: #f5a623;
  box-shadow: 0 0 20px #f5a623;
  text-shadow: none;
}

.lang-btn:hover:not([aria-pressed="true"]) {
  background-color: rgba(245, 166, 35, 0.3);
  box-shadow: 0 0 14px rgba(245, 166, 35, 0.5);
}

/* ===== Banner image ===== */
.banner {
  width: 100%;
  height: 320px;
  background-image: url('../images/logooo.png');
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
  filter: drop-shadow(0 0 20px #d4af37);
  margin: 1.5rem 0;
  border-radius: 16px;
  transition: filter 0.3s ease;
}
.banner:hover {
  filter: drop-shadow(0 0 35px #f5a623);
}

/* ===== Main content area ===== */
main {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.8rem 1.8rem;
  flex-grow: 1;
  text-align: center;
  user-select: text;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: #d4af37;
  text-shadow: 0 0 18px #b98f1b;
  margin-bottom: 1.5rem;
  letter-spacing: 0.06em;
  text-align: center;
}

p {
  font-size: clamp(1rem, 1.5vw, 1.3rem);
  color: #e9e4d4;
  margin-bottom: 3rem;
  line-height: 1.8;
  text-align: start;
  user-select: text;
}

/* ===== Profile photo ===== */
#profilePhoto {
  width: clamp(180px, 15vw, 270px);
  height: clamp(180px, 15vw, 270px);
  border-radius: 20%;
  object-fit: cover;
  box-shadow: 0 0 50px #d4af37;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  cursor: default;
  margin: 0 auto 3rem auto;
}
#profilePhoto:hover {
  transform: scale(1.1);
  box-shadow: 0 0 75px #f5a623;
}

/* ===== Footer ===== */
.site-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  padding: 1rem 2rem;
  font-size: clamp(0.8rem, 1vw, 0.95rem);
  background: rgba(30, 30, 30, 0.75);
  backdrop-filter: blur(12px) saturate(180%);
  box-shadow: inset 0 3px 10px rgba(181, 149, 44, 0.3);
  border-top: 2px solid #d4af37;
  color: #bfb27f;
  text-align: center;
  direction: inherit;
  unicode-bidi: isolate;
  user-select: none;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.site-footer p {
  margin: 0;
  color: #a99651;
  font-size: inherit;
  letter-spacing: 0.03em;
  line-height: 1.6;
  user-select: text;
  text-align: center;
}

.site-footer a {
  color: #d4af37;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}
.site-footer a:hover {
  color: #f5a623;
  text-shadow: 0 0 10px #f5a623;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .site-header {
    padding: 1rem 1.2rem;
  }
  main {
    max-width: 100%;
    padding: 2rem 1rem;
  }
  .banner {
    height: 220px;
  }
  #profilePhoto {
    width: clamp(150px, 30vw, 220px);
    height: clamp(150px, 30vw, 220px);
  }
  .main-nav ul {
    gap: 1rem;
  }
  .main-nav ul li a {
    font-size: clamp(0.85rem, 2vw, 1rem);
    padding: 0.4rem 0.8rem;
  }
  .lang-switcher {
    gap: 0.7rem;
  }
  .lang-btn {
    padding: 0.35rem 0.9rem;
    font-size: clamp(0.85rem, 2vw, 1rem);
    min-width: 40px;
  }
}

@media (max-width: 400px) {
  .banner {
    height: 160px;
  }
  #profilePhoto {
    width: clamp(120px, 40vw, 180px);
    height: clamp(120px, 40vw, 180px);
  }
  .main-nav ul {
    gap: 0.6rem;
  }
  .main-nav ul li a {
    font-size: clamp(0.8rem, 3vw, 0.9rem);
    padding: 0.35rem 0.7rem;
  }
  .lang-switcher {
    gap: 0.5rem;
  }
  .lang-btn {
    padding: 0.3rem 0.8rem;
    font-size: clamp(0.8rem, 3vw, 0.9rem);
    min-width: 36px;
  }
}

/* ===== Accessibility enhancements ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid #f5a623;
  outline-offset: 2px;
  outline-radius: 8px;
}

/* ===== Utility classes ===== */
.text-center {
  text-align: center;
}