/* Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body, html {
  width: 100%;
  height: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #fff;

  /* Bulutlu, deniz vibe */
  background: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.2), transparent 60%),
              radial-gradient(circle at 80% 30%, rgba(255,255,255,0.15), transparent 70%),
              radial-gradient(circle at 50% 80%, rgba(255,255,255,0.25), transparent 60%),
              linear-gradient(180deg, #0d47a1, #1976d2, #64b5f6);
  background-size: 200% 200%;
  animation: oceanClouds 25s ease-in-out infinite;
  position: relative;
  overflow-x: hidden;
}

@keyframes oceanClouds {
  0% { background-position: 0% 0%; }
  50% { background-position: 100% 100%; }
  100% { background-position: 0% 0%; }
}

/* Extra bulut katmanı */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 30% 40%, rgba(255,255,255,0.08), transparent 60%),
              radial-gradient(circle at 70% 60%, rgba(255,255,255,0.06), transparent 70%);
  backdrop-filter: blur(30px);
  z-index: -1;
}

/* HEADER */
header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent; /* Başta şeffaf */
  z-index: 1000;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

/* Scroll olunca arka plan lacivert ve gölge */
header.scrolled {
  background: rgba(13, 60, 145, 0.95);
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.logo {
  font-weight: 900;
  font-size: 2rem;
  color: #fff;
  text-decoration: none;
  user-select: none;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

nav ul li a {
  color: #e3f2fd;
  font-weight: 600;
  text-decoration: none;
  font-size: 1.1rem;
  transition: color 0.3s ease;
}

nav ul li a:hover {
  color: #fff;
}

/* MAIN */
main {
  width: 100%;
  min-height: auto;
}

/* URL Kısaltma bölümü */
.shortener-section {
  width: 100%;
  background: transparent;
  padding: 100px 32px 100px;
  box-sizing: border-box;
  text-align: center;
  margin-bottom: 50px;
}

.shortener-title {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 100px;
  color: #bbdefb;
  user-select: none;
  text-align: center;
  letter-spacing: 1.5px;
}

.shortener-title span {
  background: linear-gradient(90deg, #64b5f6, #bbdefb);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  font-weight: 900;
}

.shortener-form {
  display: flex;
  flex-direction: column;
  max-width: 900px;
  margin: 0 auto;
  gap: 20px;
  align-items: center;
  justify-content: center;
}

#originalUrl {
  width: 100%;
  max-width: 900px;
  font-size: 1.4rem;
  padding: 16px 20px;
  border-radius: 12px;
  border: none;
  outline: none;
  font-weight: 600;
  border: 3px solid #2196f3;
  background: #fff;
  color: #0d47a1;
  transition: box-shadow 0.3s ease;
  box-sizing: border-box;
}

#originalUrl::placeholder {
  color: #7b9cd6;
}

#originalUrl:focus {
  box-shadow: 0 0 15px #2196f3aa;
  border-color: #1976d2;
}

#shorten-btn {
  background: #2196f3;
  border: none;
  border-radius: 12px;
  padding: 12px 0;
  width: 180px;
  color: white;
  font-weight: 700;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.4s ease;
  user-select: none;
  margin-top: 20px;
}

#shorten-btn:hover {
  background: #1976d2;
  box-shadow: 0 0 15px rgba(100,181,246,0.7);
}

.result-message {
  margin-top: 32px;
  font-size: 1.4rem;
  font-weight: 700;
  color: #bbdefb;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  word-break: break-word;
  user-select: text;
  min-height: 70px;
}

/* Hakkımızda bölümü */
.about-section {
  background: #fff;
  color: #0d3c91;
  padding: 100px 48px;
  line-height: 1.85;
  font-size: 1.2rem;
  max-width: 100%;
  box-sizing: border-box;
  user-select: text;
  min-height: 480px;
}

.about-section h2 {
  font-weight: 900;
  font-size: 2.8rem;
  margin-bottom: 40px;
  user-select: none;
  text-align: center;
}

/* Hakkımızda resimli bloklar */
.about-block {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.about-block.reverse {
  flex-direction: row-reverse;
}

.about-block img {
  width: 350px;
  max-width: 100%;
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(13, 60, 145, 0.15);
  user-select: none;
}

.about-text {
  flex: 1;
  color: #0d3c91;
  font-size: 1.15rem;
  line-height: 1.7;
  user-select: text;
}

/* Footer */
footer {
  width: 100%;
  background: transparent;
  color: #e3f2fd;
  text-align: center;
  padding: 18px 0;
  font-weight: 600;
  font-size: 1rem;
  user-select: none;
}

/* Float animasyonu (ikonlar için) */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.wave-icon {
  animation: float 6s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 900px) {
  .about-block { flex-direction: column; }
  .about-block.reverse { flex-direction: column; }
  .about-block img { width: 100%; }
}

@media (max-width: 768px) {
  .shortener-form { flex-direction: column; max-width: 90%; }
  #originalUrl { font-size: 1.3rem; padding: 18px 20px; }
  #shorten-btn { font-size: 1.3rem; padding: 18px 0; width: 100%; min-width: unset; }
}

@media (max-width: 600px) {
  .shortener-form { flex-direction: column; }
  #shorten-btn { width: 100%; min-width: unset; }
  #originalUrl { width: 100%; }
}

@media (max-width: 400px) {
  #originalUrl { font-size: 1.1rem; }
  #shorten-btn { font-size: 1.1rem; }
}

#result-info { min-height: 20px; }
#result-container { min-height: 70px; transition: height 0.3s ease; }