/* Design 4 - Vizyonerdoğan Dijital Sergi */
.d4 { background: #fff; color: #1a1a1a; min-height: 100vh; }

.d4-hero { display: grid; grid-template-columns: 3fr 9fr; min-height: 560px; position: relative; }
.d4-side { background: #0e138a; display: flex; flex-direction: column; justify-content: space-between; padding: 32px; }
.d4-side-logo { display: flex; flex-direction: column; align-items: center; }
.d4-side-logo svg { margin-bottom: 8px; }
.d4-side-brand { color: #fff; font-size: 13px; letter-spacing: 0.3em; margin-top: 8px; font-family: 'Cinzel', serif; }
.d4-side-sub { color: rgba(255,255,255,0.7); font-size: 9px; letter-spacing: 0.35em; margin-top: 4px; }
.d4-side-title { color: #fff; font-size: 54px; font-weight: 300; line-height: 0.95; margin: 0; }
.d4-side-quote { color: rgba(255,255,255,0.8); font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 14px; margin-top: 12px; }
.d4-side-controls { display: flex; align-items: flex-end; justify-content: space-between; color: #fff; }
.d4-side-controls .prev { width: 28px; height: 28px; border-radius: 999px; border: 1px solid rgba(255,255,255,0.6); display: inline-flex; align-items: center; justify-content: center; transition: background 0.2s; }
.d4-side-controls .prev:hover { background: rgba(255,255,255,0.1); }
.d4-side-controls .prev svg { width: 14px; height: 14px; }
.d4-side-controls .num { font-family: 'Cormorant Garamond', serif; font-size: 38px; font-weight: 300; }

.d4-main { position: relative; overflow: hidden; }
.d4-main img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

.d4-top { position: absolute; top: 0; left: 0; right: 0; padding: 24px 32px 0; z-index: 3; }
.d4-search-wrap { display: flex; align-items: center; justify-content: flex-end; margin-bottom: 16px; }
.d4-search { position: relative; }
.d4-search input { background: rgba(255,255,255,0.95); color: #262626; border-radius: 999px; padding: 6px 32px 6px 16px; font-size: 11px; letter-spacing: 0.15em; border: none; outline: none; width: 128px; transition: width 0.2s; }
.d4-search input:focus { width: 176px; }
.d4-search svg { width: 14px; height: 14px; color: #525252; position: absolute; right: 12px; top: 50%; transform: translateY(-50%); }
.d4-nav { display: flex; align-items: center; justify-content: flex-end; gap: 24px; }
.d4-nav-item { padding: 8px 0; position: relative; }
.d4-nav-item > button, .d4-nav-item > a { font-size: 11.5px; letter-spacing: 0.15em; color: #fff; font-weight: 500; transition: color 0.2s; }
.d4-nav-item:hover > button, .d4-nav-item:hover > a { color: rgba(255,255,255,0.7); }
.d4-dropdown { position: absolute; top: 100%; left: 50%; transform: translateX(-50%); margin-top: 4px; background: #0e138a; box-shadow: 0 20px 40px rgba(0,0,0,0.35); min-width: 210px; display: none; }
.d4-nav-item.open .d4-dropdown { display: block; }
.d4-dropdown-header { padding: 12px 16px 4px; color: #fff; font-size: 11px; letter-spacing: 0.15em; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,0.2); }
.d4-dropdown a { display: flex; align-items: center; justify-content: space-between; padding: 8px 16px; font-size: 12px; color: #fff; border-bottom: 1px solid rgba(255,255,255,0.1); transition: background 0.2s; }
.d4-dropdown a:last-child { border-bottom: none; }
.d4-dropdown a:hover { background: rgba(255,255,255,0.1); }
.d4-dropdown a svg { width: 12px; height: 12px; }

.d4-main-controls { position: absolute; bottom: 24px; right: 32px; display: flex; align-items: center; gap: 12px; z-index: 3; }
.d4-dots { display: flex; gap: 6px; }
.d4-dots > div { width: 6px; height: 6px; border-radius: 999px; background: rgba(255,255,255,0.4); }
.d4-dots > div.active { background: #fff; }
.d4-main-next { width: 32px; height: 32px; border-radius: 999px; background: rgba(255,255,255,0.8); display: inline-flex; align-items: center; justify-content: center; transition: background 0.2s; }
.d4-main-next:hover { background: #fff; }
.d4-main-next svg { width: 14px; height: 14px; color: #262626; }

/* Cards row */
.d4-cards-row { max-width: 1280px; margin: 0 auto; padding: 80px 40px; position: relative; }
.d4-corner { position: absolute; width: 56px; height: 56px; border-color: #d4d4d4; }
.d4-corner.tl { top: 32px; left: 24px; border-top: 1px solid; border-left: 1px solid; }
.d4-corner.tr { top: 32px; right: 24px; border-top: 1px solid; border-right: 1px solid; }
.d4-corner.bl { bottom: 16px; left: 24px; border-bottom: 1px solid; border-left: 1px solid; }
.d4-corner.br { bottom: 16px; right: 24px; border-bottom: 1px solid; border-right: 1px solid; }
.d4-cards-grid { display: grid; grid-template-columns: 2fr 2fr 4fr 4fr; gap: 32px; align-items: center; }
.d4-cards-grid > img { width: 100%; aspect-ratio: 3/4; object-fit: cover; border-radius: 6px; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
.d4-cards-grid .wide { aspect-ratio: 4/3; }
.d4-card-text .title { font-size: 32px; font-weight: 700; color: #a08654; margin: 0; }
.d4-card-text .title .italic { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 500; }
.d4-card-text p { margin-top: 12px; font-size: 13px; line-height: 1.85; color: #404040; }
.d4-card-text button { margin-top: 16px; padding: 10px 24px; background: #a08654; color: #fff; font-size: 13px; letter-spacing: 0.15em; transition: opacity 0.2s; border-radius: 2px; }
.d4-card-text button:hover { opacity: 0.9; }

/* Big image */
.d4-big { max-width: 1280px; margin: 0 auto; padding: 0 40px 96px; }
.d4-big-title { text-align: center; margin-bottom: 32px; }
.d4-big-title h2 { font-size: 38px; font-weight: 700; color: #a08654; margin: 0; }
.d4-big-title h2 .italic { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 500; }
.d4-big-title p { font-size: 13px; color: #525252; max-width: 600px; margin: 4px auto 0; }
.d4-big-img { border-radius: 6px; overflow: hidden; box-shadow: 0 25px 50px rgba(0,0,0,0.25); }
.d4-big-img img { width: 100%; aspect-ratio: 16/6; object-fit: cover; }

/* İletişim */
.d4-contact { padding: 80px 0; background: #0e138a; }
.d4-contact-grid { max-width: 1280px; margin: 0 auto; padding: 0 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.d4-contact-info { color: #fff; }
.d4-contact-title { font-size: 46px; font-weight: 700; color: #a08654; margin: 0; }
.d4-contact-info-text { margin-top: 32px; font-size: 15px; line-height: 1.9; }
.d4-contact-info-text .space { display: block; margin-top: 24px; }
.d4-contact-form { display: flex; flex-direction: column; gap: 16px; }
.d4-contact-form input, .d4-contact-form textarea { background: transparent; border: 1px solid rgba(255,255,255,0.4); border-radius: 6px; padding: 12px 16px; color: #fff; font-size: 13px; }
.d4-contact-form input::placeholder, .d4-contact-form textarea::placeholder { color: rgba(255,255,255,0.7); }
.d4-contact-form input:focus, .d4-contact-form textarea:focus { outline: none; border-color: #fff; }
.d4-contact-form textarea { resize: vertical; min-height: 120px; }
.d4-contact-form .submit { align-self: flex-end; padding: 10px 32px; background: #a08654; color: #fff; font-size: 13px; letter-spacing: 0.15em; border-radius: 4px; transition: opacity 0.2s; }
.d4-contact-form .submit:hover { opacity: 0.9; }

/* Map */
.d4-map-wrap { max-width: 1280px; margin: 48px auto 0; padding: 0 40px; display: grid; grid-template-columns: 1fr 11fr; gap: 16px; }
.d4-map-social { display: flex; flex-direction: column; align-items: center; gap: 16px; color: rgba(255,255,255,0.8); }
.d4-map-social svg { width: 16px; height: 16px; cursor: pointer; transition: color 0.2s; }
.d4-map-social svg:hover { color: #fff; }
.d4-map { aspect-ratio: 16/4; border-radius: 6px; overflow: hidden; border: 1px solid rgba(255,255,255,0.2); }
.d4-map iframe { width: 100%; height: 100%; border: none; filter: grayscale(1); }

/* Footer */
.d4-footer { background: #0e138a; padding: 48px 0 32px; }
.d4-footer-inner { max-width: 1280px; margin: 0 auto; padding: 40px 40px 0; border-top: 1px solid rgba(255,255,255,0.2); }
.d4-footer-cols { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; color: #fff; }
.d4-footer-col-title { font-size: 11px; letter-spacing: 0.2em; font-weight: 600; margin-bottom: 12px; }
.d4-footer-col-items { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: rgba(255,255,255,0.7); }
.d4-footer-col-items a { transition: color 0.2s; }
.d4-footer-col-items a:hover { color: #fff; }
.d4-footer-bottom { margin-top: 40px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.1); text-align: right; font-size: 11px; color: rgba(255,255,255,0.7); }

/* Inner page */
.d4-inner-hero { display: grid; grid-template-columns: 3fr 9fr; position: relative; }
.d4-inner-hero-side { background: #0e138a; padding: 56px 32px; display: flex; align-items: center; justify-content: center; }
.d4-inner-hero-main { position: relative; overflow: hidden; }
.d4-inner-hero-main img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.4; }
.d4-inner-hero-main::before { content: ''; position: absolute; inset: 0; background: rgba(14,19,138,0.4); z-index: 1; }
.d4-inner-hero-top { position: relative; padding: 24px 32px; z-index: 2; }
.d4-inner-hero-nav { display: flex; align-items: center; justify-content: center; gap: 24px; padding: 24px 0; }
.d4-inner-hero-nav a { font-size: 12px; letter-spacing: 0.15em; color: #fff; font-weight: 500; transition: color 0.2s; }
.d4-inner-hero-nav a:hover { color: rgba(255,255,255,0.7); }

.d4-inner-content { max-width: 1280px; margin: 0 auto; padding: 96px 40px; position: relative; }
.d4-inner-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.d4-inner-img { border-radius: 6px; overflow: hidden; box-shadow: 0 25px 50px rgba(0,0,0,0.25); }
.d4-inner-img img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.d4-inner-text h2 { font-size: 42px; font-weight: 700; color: #a08654; margin: 0; }
.d4-inner-text h2 .italic { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 500; }
.d4-inner-text p { margin-top: 24px; font-size: 14px; line-height: 1.9; color: #262626; }
.d4-inner-text button { margin-top: 24px; padding: 10px 32px; background: #a08654; color: #fff; font-size: 13px; letter-spacing: 0.15em; border-radius: 4px; transition: opacity 0.2s; }

@media (max-width: 900px) {
  .d4-hero, .d4-inner-hero { grid-template-columns: 1fr; }
  .d4-side-title { font-size: 40px; }
  .d4-cards-grid { grid-template-columns: 1fr 1fr; }
  .d4-cards-grid > img.wide { grid-column: 1 / -1; }
  .d4-contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .d4-map-wrap { grid-template-columns: 1fr; }
  .d4-footer-cols { grid-template-columns: 1fr 1fr; }
  .d4-nav { flex-wrap: wrap; }
  .d4-inner-grid { grid-template-columns: 1fr; }
  .d4-inner-text h2 { font-size: 32px; }
}

/* PDF navigation map integration */
.d4-search-wrap { justify-content: space-between; gap: 20px; }
.d4-utility { display: flex; align-items: center; gap: 12px; color: #fff; font-size: 9.5px; letter-spacing: .12em; }
.d4-utility a { border: 1px solid rgba(255,255,255,.55); padding: 5px 10px; }
.d4-nav { gap: 10px; align-items: flex-start; }
.d4-nav-item > button, .d4-nav-item > a { display: block; max-width: 150px; font-size: 9.5px; line-height: 1.25; letter-spacing: .08em; text-align: center; }
.d4-nav-item:nth-last-child(3) > button { max-width: 205px; }
.d4-dropdown { min-width: 250px; max-width: 330px; max-height: 430px; overflow-y: auto; }
.d4-dropdown-header { font-size: 10px; line-height: 1.4; }
.d4-dropdown a { font-size: 11px; line-height: 1.35; gap: 12px; }
.d4-footer-cols { grid-template-columns: repeat(4,minmax(0,1fr)); row-gap: 36px; }
.d4-footer-col-title { line-height: 1.45; }
.d4-inner-hero-main { min-height: 270px; }
.d4-inner-hero-nav { justify-content: flex-end; padding: 10px 0 20px; }
@media (max-width: 900px) {
  .d4-footer-cols { grid-template-columns: 1fr 1fr; }
  .d4-utility { display: flex; }
}

/* Menu typography correction: original size + fixed alignment */
@media (min-width: 901px) {
  .d4-nav {
    flex-wrap: nowrap;
    gap: clamp(6px, .65vw, 10px);
    align-items: stretch;
  }
  .d4-nav-item {
    flex: 0 0 auto;
    min-height: 38px;
    display: flex;
    align-items: center;
  }
  .d4-nav-item > button,
  .d4-nav-item > a {
    max-width: none;
    min-height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(10.5px, .8vw, 11.5px);
    line-height: 1.25;
    letter-spacing: .1em;
    white-space: nowrap;
    text-align: center;
  }
  .d4-nav-item:nth-last-child(3) > button {
    width: 205px;
    max-width: 205px;
    white-space: normal;
  }
}
.d4-dropdown-header { font-size: 11px; }
.d4-dropdown a { font-size: 12px; }


/* Desktop menu tuning: slightly larger font without layout shifts */
@media (min-width: 901px) {
  .d4-top { gap: 24px; }
  .d4-nav { gap: clamp(8px, .75vw, 14px); }
  .d4-nav-item > button,
  .d4-nav-item > a {
    font-size: clamp(11.25px, .82vw, 12.25px);
    line-height: 1.25;
  }
  .d4-nav-item:nth-last-child(3) > button {
    width: 220px;
    max-width: 220px;
    white-space: normal;
  }
}