/* 
  Erciş Prof. Baykuş Kurs Merkezi
  Tasarım Sistemi - Profesyonel Eğitim Teması
*/

:root {
  --primary-color: #0D5B71;
  --secondary-color: #55C5D9;
  --accent-color: #F28F1D;
  --text-color: #1A1A1A;
  --light-bg: #f8f9fa;
  --white: #ffffff;
  --border-color: #e0e0e0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; color: var(--text-color); background-color: var(--light-bg); line-height: 1.6; }
a { text-decoration: none; color: var(--primary-color); transition: all 0.3s ease; }
a:hover { color: var(--accent-color); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.top-header { background-color: var(--primary-color); color: var(--white); padding: 10px 0; font-size: 14px; }
.top-header .container { display: flex; justify-content: space-between; align-items: center; }
.top-header a { color: var(--white); margin-left: 15px; }
.top-header a:hover { color: var(--secondary-color); }

.main-header { background-color: var(--white); box-shadow: 0 2px 10px rgba(0,0,0,0.1); position: sticky; top: 0; z-index: 1000; }
.main-header .container { display: flex; justify-content: space-between; align-items: center; padding: 0 20px; }
.logo img { height: 60px; padding: 10px 0; }

.navbar ul { display: flex; gap: 5px; list-style: none; }
.navbar ul li { position: relative; }
.navbar ul li a { color: var(--primary-color); font-weight: 600; padding: 30px 15px; display: block; position: relative; }
.navbar ul li a::after { content: ''; position: absolute; width: 0; height: 3px; background-color: var(--accent-color); bottom: 10px; left: 15px; transition: width 0.3s; }
.navbar ul li a:hover::after { width: calc(100% - 30px); }

/* Dropdown */
.navbar ul li .dropdown-menu { position: absolute; top: 100%; left: 0; background: var(--primary-color); min-width: 220px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); display: flex; flex-direction: column; opacity: 0; visibility: hidden; transform: translateY(10px); transition: all 0.3s ease; z-index: 1000; border-top: 3px solid var(--accent-color); }
.navbar ul li:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.navbar ul li .dropdown-menu li a { color: var(--white); padding: 15px 20px; border-bottom: 1px solid rgba(255,255,255,0.05); font-weight: 400; display: flex; align-items: center; gap: 10px; }
.navbar ul li .dropdown-menu li a::after { display: none; }
.navbar ul li .dropdown-menu li a:hover { background: var(--accent-color); padding-left: 25px; }

/* Announcement */
.announcement-bar { background-color: var(--accent-color); color: var(--white); padding: 10px 0; text-align: center; font-weight: bold; }
.announcement-bar a { color: var(--white); text-decoration: underline; margin-left: 10px; }

/* Slider */
.slider-container { width: 100%; height: 500px; position: relative; overflow: hidden; background: var(--primary-color); }
.slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 1s ease-in-out; display: flex; align-items: center; justify-content: center; color: var(--white); text-align: center; }
.slide.active { opacity: 1; }
.slide img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1; opacity: 0.5; }
.slide-content { position: relative; z-index: 2; max-width: 800px; padding: 20px; }
.slide-content h2 { font-size: 48px; margin-bottom: 20px; text-shadow: 2px 2px 4px rgba(0,0,0,0.5); }
.slide-content p { font-size: 20px; margin-bottom: 30px; }

/* Buttons */
.btn { display: inline-block; padding: 12px 30px; background-color: var(--accent-color); color: var(--white); border-radius: 0; font-weight: bold; text-transform: uppercase; transition: all 0.3s ease; border: 1px solid var(--accent-color); }
.btn:hover { background-color: transparent; color: var(--accent-color); transform: translateY(-3px); }

/* Sections */
.section { padding: 80px 0; }
.section-title { text-align: center; font-size: 36px; color: var(--primary-color); margin-bottom: 50px; position: relative; }
.section-title::after { content: ''; display: block; width: 60px; height: 4px; background-color: var(--accent-color); margin: 15px auto 0; }

/* Grid & Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.card { background: var(--white); border-radius: 0; overflow: hidden; box-shadow: 0 5px 15px rgba(0,0,0,0.05); transition: all 0.4s ease; text-align: center; border-bottom: 3px solid transparent; }
.card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(0,0,0,0.15); border-color: var(--accent-color); }
.card img { width: 100%; height: 250px; object-fit: cover; }
.card-content { padding: 20px; }
.card-content h3 { color: var(--primary-color); margin-bottom: 10px; }
.card-content p { color: #666; }

/* Forms & Utils */
.form-control, .calendar-wrapper { border-radius: 0; }
.event-badge { border-radius: 0; padding: 5px 10px; color: var(--white); font-size: 12px; font-weight: bold; display: inline-block; }
.event-tyt { background-color: var(--secondary-color); }
.event-ayt { background-color: var(--primary-color); }
.event-resmi { background-color: #e74c3c; }
.event-ara { background-color: var(--accent-color); }
.calendar-wrapper { background: var(--white); padding: 20px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
.calendar-table { width: 100%; border-collapse: collapse; }
.calendar-table th, .calendar-table td { border: 1px solid var(--border-color); padding: 15px; text-align: left; }
.calendar-table th { background-color: var(--light-bg); color: var(--primary-color); }

.contact-container { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; }
.form-control { width: 100%; padding: 12px; border: 1px solid var(--border-color); font-family: inherit; }
.form-control:focus { outline: none; border-color: var(--secondary-color); }
.page-banner { background-color: var(--primary-color); color: var(--white); padding: 80px 0; text-align: center; }

/* Footer */
footer { background-color: var(--primary-color); color: var(--white); padding: 60px 0 20px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-widget h3 { color: var(--secondary-color); margin-bottom: 20px; font-size: 20px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: #ddd; display: flex; align-items: center; gap: 10px; }
.footer-links a:hover { color: var(--accent-color); padding-left: 5px; }
.footer-contact li { margin-bottom: 15px; display: flex; align-items: center; gap: 10px; }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 14px; }

@media (max-width: 768px) {
  .navbar ul { flex-direction: column; display: none; background: #fff; position: absolute; top: 100%; left: 0; width: 100%; padding: 20px; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
  .navbar ul li a { padding: 15px 10px; }
  .contact-container { grid-template-columns: 1fr; }
  .slide-content h2 { font-size: 32px; }
  .mobile-menu-btn { display: block !important; font-size: 24px; cursor: pointer; padding: 15px 0; }
}