/* Bor Demir Çelik — site styles
   Same concept as the original site: wide steel photo banner, white sheet
   overlapping it, logo panel, blue uppercase left menu, blue heading boxes. */

:root {
  --blue: #1f4e96;        /* menu + headings */
  --blue-box: #2d64ae;    /* heading boxes */
  --blue-dark: #173b73;
  --text: #2b2f33;
  --muted: #5c646c;
  --line: #d9dee3;
  --page: #e6e9ec;
  --sheet: #ffffff;
  --todo: #fff1a8;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font: 16px/1.65 Arial, "Helvetica Neue", Helvetica, sans-serif;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); }

/* ---------- Banner + sheet ---------- */
.banner {
  height: 300px;
  background: #9aa3ab center / cover no-repeat;
}
.sheet {
  position: relative;
  max-width: 1040px;
  margin: -64px auto 40px;
  background: var(--sheet);
  box-shadow: 0 2px 18px rgba(0,0,0,.12);
}
.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  padding: 0 32px;
}
.logo {
  display: block;
  margin-top: -44px;
  background: #fff;
  padding: 14px 18px 10px;
  box-shadow: 0 -2px 10px rgba(0,0,0,.10);
}
.logo img { width: 260px; }
.utility {
  display: flex;
  gap: 20px;
  padding-bottom: 6px;
  font-size: 14px;
}
.utility a { color: var(--muted); text-decoration: none; }
.utility a:hover { color: var(--blue); }

.layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  padding: 24px 32px 40px;
}

/* ---------- Left menu ---------- */
.lang { font-size: 14px; letter-spacing: .05em; margin-bottom: 22px; color: var(--muted); }
.lang a { color: var(--muted); text-decoration: none; font-weight: bold; }
.lang a.active { color: var(--blue); border-bottom: 2px solid var(--blue); }
.lang span { margin: 0 6px; }

.nav a {
  display: block;
  padding: 6px 0;
  color: var(--blue);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-weight: bold;
  font-size: 14px;
}
.nav a:hover { color: var(--blue-dark); }
.nav > a.active { color: var(--blue-dark); }
.nav .sub { margin: 0 0 6px 4px; }
.nav .sub a {
  text-transform: none;
  letter-spacing: .04em;
  font-weight: normal;
  color: var(--muted);
  padding: 3px 0 3px 16px;
  font-size: 15px;
}
.nav .sub a.active { color: var(--text); }
.nav .sub a.active::before {
  content: "";
  display: inline-block;
  margin: 0 8px 1px -16px;
  border: 5px solid transparent;
  border-left: 7px solid var(--blue);
}
.side-cta {
  display: inline-block;
  margin-top: 26px;
  padding: 10px 16px;
  background: var(--blue-box);
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  font-size: 14px;
  letter-spacing: .04em;
}
.side-cta:hover { background: var(--blue-dark); }
.menu-toggle { display: none; }

/* ---------- Content ---------- */
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--blue); }
.crumbs span { margin: 0 6px; }

.box-title, .box-sub {
  display: inline-block;
  margin: 0;
  padding: 4px 12px;
  background: linear-gradient(#3a72bd, var(--blue-box));
  color: #fff;
  text-transform: uppercase;
  font-weight: normal;
  letter-spacing: .02em;
  line-height: 1.3;
}
.box-title { font-size: 26px; }
.content .box-sub { font-size: 18px; margin: 8px 0 0 60px; }
.titles { margin-bottom: 30px; }

.content h3 { color: var(--blue); font-size: 21px; margin: 28px 0 10px; }
.content p { margin: 0 0 14px; max-width: 64ch; }
.signoff { margin-top: 24px; }

/* facts row */
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 30px 0;
}
.facts div { background: #f6f8fa; padding: 14px 16px; }
.facts b { display: block; font-size: 22px; color: var(--blue); }
.facts small { color: var(--muted); font-size: 13px; }

/* lists */
.ticks { padding: 0; list-style: none; margin: 0 0 14px; }
.ticks li { padding: 6px 0 6px 22px; position: relative; border-bottom: 1px solid var(--line); max-width: 64ch; }
.ticks li::before {
  content: ""; position: absolute; left: 2px; top: 14px;
  border: 5px solid transparent; border-left: 7px solid var(--blue);
}

/* spec table */
.spec { border-collapse: collapse; width: 100%; max-width: 560px; margin: 10px 0 24px; font-size: 15px; }
.spec th, .spec td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); }
.spec th { width: 46%; color: var(--muted); font-weight: normal; }
.spec td { font-weight: bold; }
.spec tr:nth-child(odd) { background: #f6f8fa; }

.figure { margin: 18px 0 22px; max-width: 620px; }
.figure img { width: 100%; }

/* contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-bottom: 30px; }
.contact-grid dl { margin: 0; }
.contact-grid dt { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .08em; margin-top: 12px; }
.contact-grid dd { margin: 2px 0 0; }
.map { width: 100%; height: 260px; border: 1px solid var(--line); }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0 0; }
.btn {
  display: inline-block; padding: 10px 18px; background: var(--blue-box); color: #fff;
  text-decoration: none; font-weight: bold; border: 0; font: inherit; font-weight: bold; cursor: pointer;
}
.btn:hover { background: var(--blue-dark); }
.btn.ghost { background: #fff; color: var(--blue); border: 2px solid var(--blue-box); padding: 8px 16px; }

.form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; max-width: 680px; }
.form label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 4px; }
.form input, .form select, .form textarea {
  width: 100%; padding: 10px 12px; font: inherit; color: var(--text);
  border: 1px solid #c3cad1; background: #fff; border-radius: 0;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid var(--blue-box); outline-offset: -1px; }
.form .full { grid-column: 1 / -1; }
.form .hp { position: absolute; left: -9999px; }
.notice { padding: 12px 16px; margin: 0 0 20px; max-width: 680px; }
.notice.ok { background: #e5f3e8; border-left: 4px solid #2e7d3c; }
.notice.err { background: #fbe9e9; border-left: 4px solid #b3261e; }

/* "please confirm" highlight — remove the <mark class="todo"> tags once confirmed */
mark.todo { background: var(--todo); color: inherit; padding: 0 3px; }

/* ---------- Footer ---------- */
.foot {
  display: flex; justify-content: space-between; gap: 20px;
  padding: 22px 32px; border-top: 1px solid var(--line);
  font-size: 13px; color: var(--muted); background: #fafbfc;
}
.foot a { color: var(--muted); text-decoration: none; }
.foot-right { text-align: right; }

.call-fab { display: none; }

/* ---------- Tablet / phone ---------- */
@media (max-width: 820px) {
  .banner { height: 170px; }
  .sheet { margin: -30px 0 0; box-shadow: none; }
  .top { padding: 0 16px; }
  .logo { margin-top: -30px; padding: 10px 12px 6px; }
  .logo img { width: 190px; }
  .utility { display: none; }
  .layout { grid-template-columns: 1fr; gap: 10px; padding: 16px 16px 32px; }

  .side { position: relative; }
  .lang { position: absolute; right: 0; top: 10px; margin: 0; }
  .menu-toggle {
    display: inline-flex; align-items: center; gap: 10px;
    background: none; border: 1px solid #c3cad1; padding: 8px 14px;
    font: inherit; font-weight: bold; color: var(--blue);
    text-transform: uppercase; letter-spacing: .1em; font-size: 14px; cursor: pointer;
  }
  .menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
    display: block; width: 18px; height: 2px; background: var(--blue); position: relative;
  }
  .menu-toggle span::before, .menu-toggle span::after { content: ""; position: absolute; left: 0; }
  .menu-toggle span::before { top: -6px; }
  .menu-toggle span::after { top: 6px; }
  .nav { display: none; padding: 10px 0 4px; border-bottom: 1px solid var(--line); }
  .nav.open { display: block; }
  .nav a { padding: 10px 0; }
  .nav .sub a { padding: 8px 0 8px 16px; }
  .side-cta { display: none; }

  .crumbs { margin-top: 10px; }
  .box-title { font-size: 20px; }
  .content .box-sub { font-size: 15px; margin-left: 20px; }
  .facts { grid-template-columns: 1fr 1fr; }
  .contact-grid, .form { grid-template-columns: 1fr; }
  .foot { flex-direction: column; padding: 20px 16px 80px; }
  .foot-right { text-align: left; }

  .call-fab {
    display: inline-flex; align-items: center; gap: 8px;
    position: fixed; right: 16px; bottom: 16px; z-index: 10;
    background: var(--blue-box); color: #fff; text-decoration: none; font-weight: bold;
    padding: 12px 18px; border-radius: 30px; box-shadow: 0 4px 14px rgba(0,0,0,.25);
  }
}