@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@100;300;400;500;600&display=swap");

:root {
  --main-color: #ffffff;
  --green-color: #0e90a1;
  --black-color: #121212;
  --border: 0.1rem solid rgba(255, 255, 255, 0.4);
  --gap: 20px;
}

* {
  font-family: "Poppins", sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  outline: none;
  border: none;
  text-decoration: none;
  text-transform: capitalize;
  transition: 0.2s ease;
}

/*! base html codes */
html {
  font-size: 62.5%;
  overflow-x: hidden;
  scroll-padding-top: 9rem;
  scroll-behavior: smooth;
}

html::-webkit-scrollbar {
  width: 0.8rem;
  background-color: white;
}

html::-webkit-scrollbar-track {
  background-color: transparent;
}

html::-webkit-scrollbar-thumb {
  border-radius: 3rem;
  background-color: var(--green-color);
}

body {
  background-color: var(--main-color);
}

section {
  padding: 3.5rem 7%;
}

a {
  color: var(--black-color);
  text-decoration: none;
}

li {
  margin-bottom: 0.5rem;
  font-size: 1.6rem;
  color: var(--black-color);
  text-transform: none;
}

.btn {
  margin-top: 1rem;
  display: inline-block;
  padding: 2rem 3.75rem;
  border-radius: 30rem;
  font-size: 1.7rem;
  color: #fff;
  background-color: var(--green-color);
  cursor: pointer;
}

.btn:hover {
  opacity: 0.9;
}

.heading {
  color: var(--black-color);
  text-transform: uppercase;
  font-size: 4rem;
  margin-bottom: 3.5rem;
  border-bottom: 0.1rem solid var(--black-color);
}

.title {
  font-size: 2rem;
}

.search-input {
  font-size: 1.6rem;
  color: var(--black-color);
  padding: 1rem;
  text-transform: none;
  border-radius: 3rem;
}

.logo img {
  height: 7rem;
}

/* header start */
.header {background-color: white;display: flex;align-items: center;justify-content: space-between;padding: 0 7%;margin: 2rem 7%;border-radius: 30rem;box-shadow: 0px 0px 17px -2px rgba(0, 0, 0, 0.75);position: sticky;top: 2rem; z-index: 1000;}
.header.home-header {background-color: white;display: flex;align-items: center;justify-content: space-between;padding: 0 7%;margin: 2rem 7%;border-radius: 30rem;box-shadow: 0px 0px 17px -2px rgba(0, 0, 0, 0.75);position: fixed;top:0;left:0;right:0; z-index: 1000;}
.header .navbar a {margin: 0 1rem;font-size: 1.6rem;color: var(--black-color);border-bottom: 0.1rem solid transparent;}
.header .navbar .active,
.header .navbar a:hover {border-color: var(--green-color);padding-bottom: 0.5rem;}
.header .buttons button {cursor: pointer;font-size: 2.5rem;margin-left: 2rem;background-color: transparent;}
.header #menu-btn {display: none;}
.header .logo img {height: 7rem;}

/* hero - home start */
.home {
  position: relative;
  width: 100%;
  min-height: 100vh;
  padding-top: 10rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(-45deg, #0e90a1, #1a2a6c, #b21f1f, #fdbb2d);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
  padding: 2rem;
}
@keyframes gradientBG {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Glassmorphism (Buzlu Cam) Kutusu */
.glass-container {
  background: rgba(255, 255, 255, 0.1); /* Çok şeffaf beyaz */
  backdrop-filter: blur(15px); /* Arkayı buzla */
  -webkit-backdrop-filter: blur(15px); /* Safari için */
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.18); /* İnce parlak kenarlık */
  padding: 4rem;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  text-align: center;
  max-width: 800px;
  z-index: 10; /* Dalgaların üstünde dursun */
}

.home .content h1 {
  font-size: 4.5rem;
  color: #ffffff;
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.home .content p {
  font-size: 1.8rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 3rem;
  line-height: 1.6;
  font-weight: 400;
}

/* Buton Grubu */
.button-group {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Ana Buton */
.btn-primary {
  background-color: #fff;
  color: var(--green-color); /* Senin ana rengin */
  padding: 1.2rem 3rem;
  font-size: 1.6rem;
  font-weight: 700;
  border-radius: 50px; /* Daha yuvarlak modern buton */
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.4);
}

/* İkincil Buton (Şeffaf) */
.btn-secondary {
  background-color: transparent;
  color: #fff;
  padding: 1.2rem 3rem;
  font-size: 1.6rem;
  font-weight: 600;
  border-radius: 50px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

/* Dekoratif Dalgalar (En altta hareket edenler) */
.wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100px;
  background: url("https://i.imgur.com/ZAts69f.png"); /* Şeffaf bir dalga PNG'si */
  background-size: 1000px 100px;
}

.wave1 {
  animation: animateWave 30s linear infinite;
  z-index: 9;
  opacity: 0.7;
  animation-delay: 0s;
  bottom: 0;
}
.wave2 {
  animation: animateWave 15s linear infinite;
  z-index: 8;
  opacity: 0.5;
  animation-delay: -5s;
  bottom: 10px;
}
.wave3 {
  animation: animateWave 10s linear infinite;
  z-index: 7;
  opacity: 0.2;
  animation-delay: -2s;
  bottom: 20px;
}

@keyframes animateWave {
  0% {
    background-position-x: 0;
  }
  100% {
    background-position-x: 1000px;
  }
}

/* Mobil Uyumluluk */
@media (max-width: 768px) {
  .glass-container {
    padding: 2.5rem 1.5rem;
  }
  .home .content h1 {
    font-size: 3rem;
  }
  .home .content p {
    font-size: 1.5rem;
  }
  .btn-primary,
  .btn-secondary {
    width: 100%;
    padding: 1rem 2rem;
  }
}

/* quizzes start */

.container {
  width: min(1100px, 92vw);
  margin: auto;
  padding: 24px;
}

/* Quiz grid in home page */
.quiz-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 12px;
}
.quiz-card h3 {
  margin: 0.6rem 0;
  font-size: 1.5rem;
}
.pill {
  font-size: 1rem;
  padding: 0.2rem 0.5rem;
  border-radius: 1rem;
  background: var(--black-color);
  color: #fff;
}

/* grid ve kart in quizzes page */
.thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 12px;
  background: #f3f3f3;
}
.thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}
.thumb:hover img {
  transform: scale(1.05);
}

/* chips + arama */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 20px;
}
.chip {
  padding: 6px 12px;
  border: 1px solid #ccc;
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
}
.chip.on {
  background: #00bcd4;
  color: #fff;
  border-color: #00bcd4;
}
.search-input {
  margin: 8px 0 6px;
  padding: 8px 12px;
  width: 100%;
  max-width: 360px;
  border: 1px solid #ddd;
  border-radius: 8px;
}

/* Responsive */
img {
  max-width: 100%;
  height: auto;
}
@media (max-width: 1024px) {
  .quiz-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 640px) {
  .quiz-grid {
    grid-template-columns: 1fr;
  }
}

/* about start */
.about .row {display: flex;flex-wrap: wrap;column-gap: 2rem;}
.about .row .image {flex: 1 1 45rem;}
.about .row img {width: 100%;}
.about .row .content {flex: 1 1 45rem;}
.about .row .content h3 {font-size: 3rem;color: var(--black-color);text-transform: none;}
.about .row .content p {font-size: 1.6rem;color: var(--black-color);padding: 1rem 0;line-height: 1.8;text-transform: none;}
.about .row .content span {color: var(--green-color);font-weight: 500;}
.about .content .privacy {display: flex;justify-content: center;gap: 1rem;margin-top: 3rem;}

/* contact start */
.contact .row {display: flex;display: block;flex-wrap: wrap;gap: 2rem;}
.contact .row .content {font-size: 2rem;display: flex;flex-direction: column;align-items: center;}
.contact .row .content h3 {font-size: 3rem;color: var(--green-color);}
.contact .row .content p {font-size: 2rem;padding: 1rem 0;line-height: 1.8;text-transform: none;}
.contact .row .info {flex: 1 1 5rem;padding: 2rem;border: var(--border);border-color: var(--green-color);border-radius: 1rem;display: flex;flex-direction: column;align-items: center;justify-content: center;text-align: center;}

/* footer start */
.footer {background-color: var(--main-color);text-align: center;}
.footer .share {padding: 2rem 0;}
.footer .share a {width: 5rem;height: 5rem;line-height: 5rem;color: var(--black-color);font-size: 2rem;border: var(--border);border-color: var(--black-color);border-radius: 50%;margin: 0.3rem;}
.footer .share a:hover {background-color: var(--green-color);}
.footer .links {display: flex;justify-content: center;flex-wrap: wrap;gap: 1rem;}
.footer .links a {background-color: var(--green-color);padding: 0.7rem 2rem;color: #fff;font-size: 2rem;border: var(--border);}
.footer .links a:hover {background-color: var(--black-color);opacity: 0.7;}
.footer .links a.active {background-color: var(--black-color);}
.footer .credit {font-size: 2rem;color: var(--black-color);font-weight: 300;padding-top: 1.5rem;}
.footer .credit span {color: var(--green-color);}
.btn[disabled] {opacity: 0.5;cursor: not-allowed;}

/* Kart grid iyileştirme (quizzes & home) */
.quiz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--gap);
  margin-top: 3rem;
  justify-items: center;
}
.quiz-card {
  max-width: 320px;
  width: 100%;
}
.quiz-card .thumb {
  border-radius: 12px;
}

.quiz-card img {
  aspect-ratio: 16/9;
  object-fit: cover;
}

.container .Quizzes-title {
  font-size: 2.5rem;
  margin-bottom: 20px;
  text-align: center;
}

.container .search-input {
  margin: 0 auto;
  display: block;
}

.container .chips {
  justify-content: center;
  display: flex;
}

.container .clear-button {
  padding: 10px 100px;
  border: none;
  border-radius: 10px;
  background: var(--green-color);
  color: #fff;
  cursor: pointer;
  display: block;
  margin: 0 auto;
}

/*Terms and Privacy*/
.container h1 {font-size: 3rem;margin-bottom: 20px;}
.container p {font-size: 2rem;text-transform: none;margin-bottom: 20px;}
.donate {margin-top: 40px;padding: 16px;text-align: center;font-size: 0.95rem;color: #555;background: #fafafa;border-radius: 12px;border: 1px solid #eee;}
.donate a {color: #00bcd4;text-decoration: none;font-weight: 600;}
.donate a:hover {text-decoration: underline;}

/* 404.html page start */
.error-page { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
.error-page h1 {font-size: 6rem;color: var(--black-color);margin-bottom: 1rem;}
.error-page p {font-size: 2rem;color: var(--black-color);}
.error-page a {color: var(--green-color);font-weight: 500;}
/* 404.html page finished */

[hidden] {
  display: none !important;
}

@media (max-width: 991px) {
  html { font-size: 55%; }
  .header { padding: 1.5rem 2rem; }
  section { padding: 2rem; }
}

@media (max-width: 768px) {
  .home {
    background-image: linear-gradient(-45deg, #0e90a1, #1a2a6c, #b21f1f, #fdbb2d) !important;
    background-size: 400% 400% !important;
    animation: gradientBG 15s ease infinite !important;
    background-attachment: fixed !important;
    min-height: 100vh;
    padding-top: 14rem !important;
    align-items: flex-start;
  }
  .glass-container {
    padding: 2rem 1.5rem;
    width: 90%;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.2);
  }
  .home .content h1 { font-size: 3rem; line-height: 1.2; color: #fff; }
  .home .content p { font-size: 1.6rem; margin-bottom: 2rem; color: #eee; }

  .header {
    position: fixed !important;
    top: 2rem !important;
    left: 5% !important;
    width: 90% !important;
    margin: 0 !important;
    border-radius: 30rem !important;
    padding: 1rem 2rem !important;
    background-color: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px) !important;
    box-shadow: 0 0px 17px -2px rgba(0, 0, 0, 0.75) !important;
    z-index: 9999 !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
  }
  .header + main, 
  .header + .container, 
  .header + .about, 
  .header + .contact {
    padding-top: 14rem !important;
  }
  .header .logo img { height: 4rem; }
  .header #menu-btn { display: block !important; font-size: 2.5rem; cursor: pointer; color: #333; }

  .header .navbar {
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    height: 100vh !important;
    width: 75% !important;
    max-width: 300px !important;
    background-color: #ffffff !important;
    box-shadow: -5px 0 20px rgba(0,0,0,0.3) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: flex-start !important;
    padding-top: 12rem !important; 
    transform: translateX(120%) !important;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    z-index: 9998 !important;
  }
  .header .navbar.active {
    transform: translateX(0) !important;
  }
  .header .navbar a {
    display: block !important;
    font-size: 1.8rem !important;
    color: #333 !important;
    margin: 1.5rem 0 !important;
    border-bottom: 1px solid #eee !important;
    width: 80% !important;
    text-align: center !important;
    padding-bottom: 1rem !important;
  }
  
  .quiz-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .quiz-card img { height: 140px; }
  .q-media.thumb { max-width: 92vw; margin: 0 auto 16px; }
}