/* ===== GLOBAL RESET & BASE STYLES ===== */

/* Modern CSS Reset */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px; /* Base font size for rem calculations */
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%; /* Prevent iOS font scaling */
  -ms-text-size-adjust: 100%; /* Prevent IE font scaling */
  text-size-adjust: 100%; /* Standard property */
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  line-height: 1.6;
  color: #333;
  background-color: #ffffff;
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden; /* Prevent horizontal scroll */
  -webkit-font-smoothing: antialiased; /* Better font rendering on webkit */
  -moz-osx-font-smoothing: grayscale; /* Better font rendering on Firefox */
  text-rendering: optimizeLegibility; /* Better text rendering */
}

/* Fixed header offset to avoid content being overlapped */
:root {
  --header-offset: 80px;

  /* Button palette */
  --btn-radius: 10px;
  --btn-font-weight: 600;
  --btn-default-bg: #f8fafc;
  --btn-default-border: rgba(15, 23, 42, 0.08);
  --btn-default-color: #0f172a;

  --btn-primary-start: #06b6d4;
  --btn-primary-end: #0e7490;
  --btn-success-start: #22c55e;
  --btn-success-end: #15803d;
  --btn-danger-start: #f97316;
  --btn-danger-end: #d2470d;
  --btn-warning-start: #facc15;
  --btn-warning-end: #eab308;
  --btn-secondary-start: #94a3b8;
  --btn-secondary-end: #64748b;
  --btn-info-start: #60a5fa;
  --btn-info-end: #2563eb;
}

body.has-fixed-header {
  padding-top: var(--header-offset);
}

@media (max-width: 768px) {
  :root {
    --header-offset: 72px;
  }
}

/* Link Styles */
a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

a:hover {
  text-decoration: none;
}

/* ===== IMAGE OPTIMIZATION ===== */

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-style: none; /* Remove border on images inside links in IE 10 */
  vertical-align: middle; /* Align images properly */
}

/* Responsive Images */
.img-fluid {
  max-width: 100%;
  height: auto;
}

/* Modern image loading */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded,
img:not([loading="lazy"]) {
  opacity: 1;
}

/* Offcanvas */
.offcanvas {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
}

/* Bottom Links */
.bottomLink {
  color: #333;
  margin: 5px 0;
  display: inline-block;
  transition: color 0.3s ease, transform 0.2s ease;
}

.bottomLink:hover {
  color: #3b94c4;
  transform: translateX(5px);
}

/* Logo */
#EBBKültürSantLogo {
  width: auto;
  height: 100px;
  margin: 25px;
  max-width: 100%;
}

/* Container Styles */
.container-lg {
  padding: 0px;
  max-width: 100%;
}

/* Navbar Styles */
.navbar {
  padding: 0px;
  background-color: #ffffff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-toggler {
  border: none;
  padding: 4px 8px;
}

.navbar-toggler:focus {
  box-shadow: none;
}

.navbar-nav {
  align-items: center;
}

.nav-link {
  color: #333 !important;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-link.active {
  color: #3b94c4 !important;
  background-color: transparent;
}

.nav-link:hover {
  color: #3b94c4 !important;
  background-color: transparent;
}

/* Responsive Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.2;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

/* ===== BUTTON STYLES ===== */

.btn {
  border-radius: var(--btn-radius);
  font-weight: var(--btn-font-weight);
  border: 1px solid var(--btn-default-border);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  vertical-align: middle;
  user-select: none;
  background-color: var(--btn-default-bg);
  color: var(--btn-default-color);
  line-height: 1.5;
  padding: 0.65rem 1.4rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease,
    background 0.25s ease, color 0.25s ease;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(15, 23, 42, 0.12);
  filter: brightness(1.05);
}

.btn:focus {
  outline: 2px solid #3b94c4;
  outline-offset: 2px;
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.12);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  filter: none;
}

.btn i,
.btn svg {
  pointer-events: none;
}

.btn-primary,
.btn-success,
.btn-danger,
.btn-warning,
.btn-secondary {
  border: none;
  color: #fff;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--btn-primary-start),
    var(--btn-primary-end)
  );
}

.btn-success {
  background: linear-gradient(
    135deg,
    var(--btn-success-start),
    var(--btn-success-end)
  );
}

.btn-danger {
  background: linear-gradient(
    135deg,
    var(--btn-danger-start),
    var(--btn-danger-end)
  );
}

.btn-warning {
  background: linear-gradient(
    135deg,
    var(--btn-warning-start),
    var(--btn-warning-end)
  );
  color: #1f2937;
}

.btn-secondary {
  background: linear-gradient(
    135deg,
    var(--btn-secondary-start),
    var(--btn-secondary-end)
  );
  color: #0f172a;
}

.btn-info {
  background: linear-gradient(
    135deg,
    var(--btn-info-start),
    var(--btn-info-end)
  );
}

.btn-light {
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  color: #0f172a;
  box-shadow: 0 8px 20px rgba(148, 163, 184, 0.25);
}

.btn-dark {
  background: #0f172a;
  color: #fff;
}

.btn-outline-primary,
.btn-outline-success,
.btn-outline-danger,
.btn-outline-warning,
.btn-outline-secondary {
  background: transparent;
  box-shadow: none;
}

.btn-outline-primary {
  color: var(--btn-primary-start);
  border: 1px solid var(--btn-primary-start);
}

.btn-outline-success {
  color: var(--btn-success-start);
  border: 1px solid var(--btn-success-start);
}

.btn-outline-danger {
  color: var(--btn-danger-start);
  border: 1px solid var(--btn-danger-start);
}

.btn-outline-warning {
  color: var(--btn-warning-start);
  border: 1px solid var(--btn-warning-start);
}

.btn-outline-secondary {
  color: #475569;
  border: 1px solid rgba(71, 85, 105, 0.8);
}

.btn-outline-info {
  color: var(--btn-info-start);
  border: 1px solid var(--btn-info-start);
}

.btn-outline-primary:hover,
.btn-outline-success:hover,
.btn-outline-danger:hover,
.btn-outline-warning:hover,
.btn-outline-secondary:hover {
  color: #fff;
  border-color: transparent;
}

.btn-outline-primary:hover {
  background: linear-gradient(
    135deg,
    var(--btn-primary-start),
    var(--btn-primary-end)
  );
}

.btn-outline-success:hover {
  background: linear-gradient(
    135deg,
    var(--btn-success-start),
    var(--btn-success-end)
  );
}

.btn-outline-danger:hover {
  background: linear-gradient(
    135deg,
    var(--btn-danger-start),
    var(--btn-danger-end)
  );
}

.btn-outline-warning:hover {
  background: linear-gradient(
    135deg,
    var(--btn-warning-start),
    var(--btn-warning-end)
  );
  color: #1f2937;
}

.btn-outline-secondary:hover {
  background: linear-gradient(
    135deg,
    var(--btn-secondary-start),
    var(--btn-secondary-end)
  );
  color: #0f172a;
}

.btn-outline-info:hover {
  background: linear-gradient(
    135deg,
    var(--btn-info-start),
    var(--btn-info-end)
  );
}

/* Utility Classes */
.text-responsive {
  font-size: clamp(0.875rem, 2.5vw, 1.125rem);
}

.heading-responsive {
  font-size: clamp(1.25rem, 4vw, 2.5rem);
}

/* Focus States for Accessibility */
*:focus {
  outline: 2px solid #3b94c4;
  outline-offset: 2px;
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 8px 16px;
  background: #000;
  color: #fff;
  text-decoration: none;
}

.skip-link:focus {
  left: 6px;
  top: 6px;
}

/* Responsive Media Queries */
@media (max-width: 1200px) {
  .container-lg {
    padding: 0 15px;
  }
}

@media (max-width: 992px) {
  body {
    font-size: 14px;
  }

  .navbar-collapse {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
  }

  .nav-link {
    padding: 0.75rem 1rem;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .container-lg {
    padding: 0 10px;
  }

  h1 {
    font-size: 1.75rem;
  }
  h2 {
    font-size: 1.5rem;
  }
  h3 {
    font-size: 1.25rem;
  }
  h4 {
    font-size: 1.1rem;
  }
}

@media (max-width: 576px) {
  body {
    font-size: 13px;
  }

  .container-lg {
    padding: 0 8px;
  }

  h1 {
    font-size: 1.5rem;
  }
  h2 {
    font-size: 1.3rem;
  }
  h3 {
    font-size: 1.15rem;
  }
  h4 {
    font-size: 1rem;
  }

  .btn {
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
  }
}

@media (max-width: 400px) {
  .container-lg {
    padding: 0 5px;
  }

  body {
    font-size: 12px;
  }

  h1 {
    font-size: 1.3rem;
  }
  h2 {
    font-size: 1.1rem;
  }
  h3 {
    font-size: 1rem;
  }
  h4 {
    font-size: 0.9rem;
  }
}

/* Print Styles */
@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    text-decoration: underline;
  }

  .navbar,
  .btn {
    display: none;
  }
}

/* ===== Shared Header & Navigation (from index.html) ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(44, 90, 160, 0.1);
  z-index: 1000;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0.5rem 0; /* add vertical breathing space like event-detail */
}

/* ===== Shared Footer ===== */
.footer {
  background: #2c3e50; /* var(--text-dark) equivalent */
  color: #fff;
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: #fff;
}

.footer-section p,
.footer-section a {
  color: #bdc3c7;
  text-decoration: none;
  line-height: 1.8;
  transition: all 0.3s ease;
}

.footer-section a:hover {
  color: #f39c12;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  background: #2c5aa0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: #f39c12;
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid #34495e;
  padding-top: 2rem;
  text-align: center;
  color: #bdc3c7;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #2c5aa0;
  font-weight: 700;
  font-size: 1.2rem;
}

.logo img {
  width: 50px;
  height: 50px;
  border-radius: 8px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  text-decoration: none;
  color: #2c3e50;
  font-weight: 500;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active {
  color: #2c5aa0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #2c5aa0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #2c5aa0;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .mobile-menu-btn {
    display: block;
  }
}