/*
Theme Name: kalkavan-uw
Theme URI: https://kalkavanuw.com
Author: Kalkavan Su Altı Sanayi ve Ticaret Limited Şirketi
Author URI: https://kalkavanuw.com
Description: Single-page WordPress theme for Kalkavan Underwater Industry, a professional underwater diving services company in Istanbul, Turkey.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: kalkavan-uw
Tags: custom-theme, one-page, responsive, business
*/

:root {
  --kuw-bg: #050D1A;
  --kuw-surface: #0A1628;
  --kuw-primary: #00D4CC;
  --kuw-secondary: #1E6FFF;
  --kuw-text: #E8F4F8;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--kuw-bg);
  color: var(--kuw-text);
  font-family: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  text-rendering: geometricPrecision;
}

body.menu-open {
  overflow: hidden;
}

@media (max-width: 767px) {
  body {
    padding-bottom: calc(4.75rem + env(safe-area-inset-bottom));
  }
}

h1,
h2,
h3,
h4,
.font-display {
  font-family: "Bebas Neue", Impact, sans-serif;
  letter-spacing: 0.06em;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
}

button,
input,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

::selection {
  background: rgba(0, 212, 204, 0.35);
  color: #ffffff;
}

.kuw-section {
  position: relative;
  overflow: hidden;
}

.kuw-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 10%, rgba(0, 212, 204, 0.08), transparent 30rem),
    radial-gradient(circle at 85% 20%, rgba(30, 111, 255, 0.08), transparent 28rem);
  opacity: 0.8;
}

.hero-water {
  background:
    radial-gradient(circle at 50% 0%, rgba(0, 212, 204, 0.22), transparent 28rem),
    radial-gradient(circle at 15% 25%, rgba(30, 111, 255, 0.16), transparent 28rem),
    linear-gradient(180deg, rgba(5, 13, 26, 0.78) 0%, rgba(5, 13, 26, 0.97) 78%, #050D1A 100%);
}

.hero-water::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(232, 244, 248, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 244, 248, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

.bubble-field {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.bubble-field span {
  position: absolute;
  bottom: -8rem;
  width: var(--size);
  height: var(--size);
  left: var(--left);
  border: 1px solid rgba(0, 212, 204, 0.32);
  border-radius: 999px;
  background: radial-gradient(circle at 35% 30%, rgba(232, 244, 248, 0.32), rgba(0, 212, 204, 0.05) 52%, transparent 70%);
  box-shadow: 0 0 24px rgba(0, 212, 204, 0.12);
  animation: bubble-rise var(--duration) linear infinite;
  animation-delay: var(--delay);
  opacity: 0;
}

@keyframes bubble-rise {
  0% {
    transform: translate3d(0, 0, 0) scale(0.7);
    opacity: 0;
  }
  10%,
  75% {
    opacity: 0.72;
  }
  100% {
    transform: translate3d(var(--drift), -120vh, 0) scale(1.08);
    opacity: 0;
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.glass-panel {
  background: linear-gradient(145deg, rgba(10, 22, 40, 0.82), rgba(5, 13, 26, 0.58));
  border: 1px solid rgba(232, 244, 248, 0.08);
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.26);
}

.brand-mark {
  background: linear-gradient(145deg, rgba(0, 212, 204, 0.14), rgba(30, 111, 255, 0.08));
  border: 1px solid rgba(0, 212, 204, 0.38);
  box-shadow: 0 0 28px rgba(0, 212, 204, 0.18);
}

.brand-mark img {
  filter: drop-shadow(0 0 10px rgba(0, 212, 204, 0.2));
}

.btn-primary,
.btn-secondary,
.icon-button {
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.btn-primary {
  background: var(--kuw-primary);
  border: 1px solid var(--kuw-primary);
  color: var(--kuw-bg);
  box-shadow: 0 0 28px rgba(0, 212, 204, 0.18);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #15f0e7;
  border-color: #15f0e7;
  color: #03101d;
  box-shadow: 0 0 34px rgba(0, 212, 204, 0.26);
}

.btn-primary:active {
  background: #0aafa9;
  border-color: #0aafa9;
  color: #ffffff;
  transform: translateY(1px);
}

.btn-secondary {
  background: rgba(10, 22, 40, 0.62);
  border: 1px solid rgba(232, 244, 248, 0.22);
  color: #ffffff;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: rgba(0, 212, 204, 0.1);
  border-color: rgba(0, 212, 204, 0.7);
  color: var(--kuw-primary);
}

.btn-secondary:active {
  background: rgba(0, 212, 204, 0.18);
  border-color: var(--kuw-primary);
  color: #ffffff;
  transform: translateY(1px);
}

.icon-button {
  background: rgba(10, 22, 40, 0.5);
  border: 1px solid rgba(232, 244, 248, 0.15);
  color: var(--kuw-text);
}

.icon-button:hover,
.icon-button:focus-visible {
  background: rgba(0, 212, 204, 0.1);
  border-color: rgba(0, 212, 204, 0.65);
  color: var(--kuw-primary);
}

.icon-button:active {
  background: rgba(0, 212, 204, 0.18);
  color: #ffffff;
  transform: translateY(1px);
}

.language-menu {
  position: relative;
}

.language-menu summary {
  cursor: pointer;
  list-style: none;
}

.language-menu summary::-webkit-details-marker {
  display: none;
}

.flag-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  line-height: 1;
  min-width: 1.25rem;
}

.language-trigger {
  gap: 0.38rem;
}

.language-trigger-text {
  color: rgba(232, 244, 248, 0.82);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.language-caret {
  color: rgba(232, 244, 248, 0.66);
  transition: transform 180ms ease;
}

.language-menu[open] .language-caret {
  transform: rotate(180deg);
}

.language-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 0.65rem);
  z-index: 90;
  display: grid;
  gap: 0.35rem;
  min-width: 8rem;
  border: 1px solid rgba(232, 244, 248, 0.12);
  border-radius: 0.5rem;
  background: #050D1A;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.7);
  padding: 0.45rem;
}

.language-panel-title {
  border-bottom: 1px solid rgba(232, 244, 248, 0.1);
  color: rgba(232, 244, 248, 0.48);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  margin: 0 0 0.25rem;
  padding: 0.55rem 0.75rem 0.7rem;
  text-transform: uppercase;
}

.language-panel a {
  align-items: center;
  border-radius: 0.375rem;
  color: rgba(232, 244, 248, 0.76);
  display: flex;
  gap: 0.6rem;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  padding: 0.65rem 0.75rem;
  transition: color 180ms ease, background-color 180ms ease;
}

.language-panel a:hover,
.language-panel a:focus-visible,
.language-panel a.is-active {
  background: rgba(0, 212, 204, 0.12);
  color: var(--kuw-primary);
}

.service-card {
  background: linear-gradient(180deg, rgba(10, 22, 40, 0.82), rgba(7, 16, 30, 0.74));
  border: 1px solid rgba(232, 244, 248, 0.1);
  border-left: 2px solid rgba(0, 212, 204, 0.64);
  box-shadow: 0 18px 54px rgba(0, 0, 0, 0.18);
  transition: transform 220ms ease, border-color 220ms ease, background 220ms ease, box-shadow 220ms ease;
}

.service-card:hover,
.service-card:focus-within {
  transform: translateY(-4px);
  background: linear-gradient(180deg, rgba(12, 28, 50, 0.92), rgba(7, 16, 30, 0.84));
  border-color: rgba(0, 212, 204, 0.36);
  box-shadow: 0 22px 58px rgba(0, 0, 0, 0.24);
}

.service-index {
  color: rgba(0, 212, 204, 0.82);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1;
  padding-top: 0.35rem;
}

.kuw-nav-link {
  position: relative;
}

.kuw-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.45rem;
  width: 100%;
  height: 2px;
  background: var(--kuw-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

.kuw-nav-link:hover::after,
.kuw-nav-link:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.mobile-menu {
  z-index: 70;
  background: #050D1A;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.72);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-0.75rem);
  transition: opacity 220ms ease, transform 220ms ease;
}

.mobile-menu.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-menu a {
  background: rgba(10, 22, 40, 0.96);
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.mobile-menu a:hover,
.mobile-menu a:focus-visible {
  background: rgba(0, 212, 204, 0.1);
  border-color: rgba(0, 212, 204, 0.54);
  color: var(--kuw-primary);
}

.mobile-menu a:active {
  background: rgba(0, 212, 204, 0.18);
  color: #ffffff;
}

@media (max-width: 767px) {
  header {
    background: rgba(5, 13, 26, 0.98);
  }

}

.mobile-contact-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 80;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  border-top: 1px solid rgba(232, 244, 248, 0.12);
  background: rgba(5, 13, 26, 0.98);
  box-shadow: 0 -18px 54px rgba(0, 0, 0, 0.48);
  padding: 0.65rem 0.75rem calc(0.65rem + env(safe-area-inset-bottom));
}

.mobile-contact-bar a,
.mobile-contact-bar summary {
  align-items: center;
  background: rgba(10, 22, 40, 0.94);
  border: 1px solid rgba(232, 244, 248, 0.12);
  border-radius: 0.5rem;
  color: var(--kuw-text);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  justify-content: center;
  min-height: 3.25rem;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.mobile-contact-bar a:hover,
.mobile-contact-bar a:focus-visible,
.mobile-contact-bar summary:hover,
.mobile-contact-bar summary:focus-visible {
  background: rgba(0, 212, 204, 0.1);
  border-color: rgba(0, 212, 204, 0.62);
  color: var(--kuw-primary);
}

.mobile-contact-bar a:active,
.mobile-contact-bar summary:active {
  background: rgba(0, 212, 204, 0.18);
  color: #ffffff;
  transform: translateY(1px);
}

.mobile-contact-bar a span,
.mobile-contact-bar .language-trigger-text {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.mobile-contact-bar .language-menu {
  min-width: 0;
}

.mobile-contact-bar .language-trigger {
  height: auto;
  min-height: 3.25rem;
  padding: 0;
  width: 100%;
}

.mobile-contact-bar .language-caret {
  display: none;
}

.mobile-contact-bar .language-panel {
  bottom: calc(100% + 0.65rem);
  left: 0;
  min-width: min(18rem, calc(100vw - 1.5rem));
  right: auto;
  top: auto;
}

@media (min-width: 768px) {
  .mobile-contact-bar {
    display: none;
  }
}

.form-field {
  width: 100%;
  border: 1px solid rgba(232, 244, 248, 0.14);
  border-radius: 0.5rem;
  background: rgba(5, 13, 26, 0.62);
  color: var(--kuw-text);
  outline: none;
  padding: 0.875rem 1rem;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.form-field:focus {
  border-color: var(--kuw-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 204, 0.14);
  background: rgba(5, 13, 26, 0.86);
}

.form-field::placeholder {
  color: rgba(232, 244, 248, 0.48);
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }
}