body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background-color: #f5f8fa;
}

/* Navbar */
.navbar {
    background-color: #1e293b;
    color: white;
    padding: 10px 0;
}
.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 90%;
    margin: auto;
}
.navbar nav a {
    color: #dbeafe;
    margin: 0 10px;
    text-decoration: none;
    font-weight: 500;
}
.navbar nav a:hover {
    color: #3b82f6;
}
.admin-btn {
    background: #3b82f6;
    color: white;
    padding: 8px 14px;
    border-radius: 8px;
    text-decoration: none;
    transition: 0.3s;
}
.admin-btn:hover {
    background: #60a5fa;
}

/* Hero */
.hero {
    background: linear-gradient(to right, #3b82f6, #60a5fa);
    color: white;
    text-align: center;
    padding: 80px 20px;
}
.hero-content h2 {
    font-size: 36px;
    margin-bottom: 10px;
}
.hero-buttons .btn-primary, .hero-buttons .btn-secondary {
    display: inline-block;
    margin: 10px;
    padding: 10px 18px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
}
.btn-primary {
    background-color: white;
    color: #3b82f6;
}
.btn-secondary {
    border: 2px solid white;
    color: white;
}
.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Cards */
.centers {
    text-align: center;
    padding: 50px 20px;
}
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 20px;
}
.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 20px;
}
.card h3 {
    color: #3b82f6;
}
.card button {
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 6px;
    padding: 8px 12px;
    margin-top: 10px;
    cursor: pointer;
}
.card button:hover {
    background: #2563eb;
}

/* Footer */
.footer {
    background-color: #1e293b;
    color: white;
    text-align: center;
    padding: 15px 0;
    margin-top: 50px;
}

.center-img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 10px;
}

/* Merkez Detay Sayfası */
.center-detail {
    padding: 50px 20px;
    text-align: center;
}
.detail-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
}
.detail-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}
.detail-text {
    padding: 20px;
}
.detail-text h2 {
    color: #3b82f6;
    margin-bottom: 15px;
}



.contact {
    padding: 50px 20px;
    text-align: center;
}
.contact-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}
.contact-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 20px;
}
.contact-card h3 {
    color: #3b82f6;
    margin-bottom: 10px;
}


/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.6);
}
.modal-content {
  background-color: #f5f8fa;
  margin: 10% auto;
  padding: 20px;
  border-radius: 10px;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.modal-content h2 {
  text-align: center;
  color: #1e293b;
}
.modal-content label {
  display: block;
  margin-top: 10px;
  font-weight: 600;
}
.modal-content input {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  border-radius: 5px;
  border: 1px solid #ccc;
}
.modal-content button {
  margin-top: 15px;
  width: 100%;
  background-color: #3b82f6;
  border: none;
  color: white;
  padding: 10px;
  border-radius: 8px;
  cursor: pointer;
}
.modal-content button:hover {
  background-color: #2563eb;
}
.close {
  float: right;
  font-size: 22px;
  font-weight: bold;
  cursor: pointer;
}
.header-buttons {
  display: flex;
  gap: 10px;
  align-items: center;
}

.btn-excel {
  background-color: #10b981;
  color: white;
  padding: 6px 12px;
  border-radius: 6px;
  text-decoration: none;
  transition: 0.2s;
}

.btn-excel:hover {
  background-color: #059669;
}

.add-form {
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  max-width: 600px;
}

.add-form input, .add-form select {
  width: 100%;
  padding: 8px;
  margin-bottom: 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
}
.application-section {
  max-width: 850px;
  margin: 40px auto;
  background: #fff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.application-section h1 {
  text-align: center;
  margin-bottom: 10px;
  color: #1e293b;
}

.form-info {
  text-align: center;
  color: #64748b;
  margin-bottom: 25px;
}

.application-form {
  display: flex;
  flex-direction: column;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: #1e293b;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 14px;
  transition: border 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  border-color: #3b82f6;
  outline: none;
}

.full-width {
  grid-column: 1 / -1;
}

.btn-submit {
  margin-top: 25px;
  align-self: center;
  padding: 10px 20px;
  font-size: 15px;
  border: none;
  background: #2563eb;
  color: white;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
}

.btn-submit:hover {
  background: #1d4ed8;
}