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

:root {
  /* Brand colors – turquoise/teal theme */
  --primary-color: #14b8a6;        /* teal 500 */
  --primary-600: #0d9488;          /* teal 600 */
  --primary-700: #0f766e;          /* teal 700 */

  /* Backgrounds */
  --bg-dark: #0a0d0d;              /* near-black with teal tint */
  --bg-darker: #070a0a;            /* navbar/headers */
  --surface: #101414;              /* cards, modals base */
  --surface-2: #161b1b;            /* inputs */
  --stroke: #232828;               /* borders */

  /* Text */
  --text-primary: #e5f6f4;
  --text-secondary: #9bc5c0;

  /* Accents */
  --success-color: #14b8a6;
  --error-color: #f34343;

  /* Glass */
  --glass-bg: rgba(16, 20, 20, 0.55);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-blur: 10px;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  /* Sötétebb, egységes háttér finom türkiz fénnyel (törés nélkül) */
  background:
    radial-gradient(1200px 700px at -10% -20%, rgba(20, 184, 166, 0.04), transparent),
    radial-gradient(900px 600px at 110% -10%, rgba(20, 184, 166, 0.035), transparent),
    linear-gradient(180deg, #0a0d0d 0%, #080a0a 100%);
  background-repeat: no-repeat, no-repeat, no-repeat;
  background-attachment: fixed, fixed, scroll;
  color: var(--text-primary);
  line-height: 1.6;
}

/* Biztonsági háttér az egész oldalnak (body-n túl is) */
html { 
  background-color: #080a0a; 
}

/* Általános */
.page {
  display: none;
}

.page.active {
  display: block;
}

.btn {
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background-color: var(--primary-600);
  color: var(--text-primary);
  box-shadow: 0 4px 18px rgba(255, 255, 255, 0.123);
}

.btn-primary:hover {
  background-color: var(--primary-700);
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(255, 255, 255, 0.171);
}

.btn-primary:active {
  background-color: var(--primary-color);
  transform: translateY(0);
  box-shadow: 0 4px 18px rgba(255, 255, 255, 0.171);
}

.btn-secondary {
  background-color: var(--surface);
  border-color: var(--stroke);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--surface-2);
  border-color: #444;
}

.btn-icon {
  background-color: transparent;
  padding: 8px 15px;
}

.btn-block {
  width: 100%;
}

.error-message {
  color: var(--error-color);
  background-color: rgba(243, 67, 67, 0.1);
  padding: 10px;
  border-radius: 4px;
  margin: 10px 0;
  display: none;
}

.error-message.show {
  display: block;
}

.success-message {
  color: var(--success-color);
  background-color: rgba(70, 211, 105, 0.1);
  padding: 10px;
  border-radius: 4px;
  margin: 10px 0;
  display: none;
}

.success-message.show {
  display: block;
}

/* Login oldal */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), 
              url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><rect fill="%23141414" width="1200" height="800"/></svg>');
  background-size: cover;
}

.login-box {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
  padding: 60px 68px 40px;
  border-radius: 10px;
  width: 100%;
  max-width: 450px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);

  border: 1px solid var(--glass-border);
}

.logo {
  text-align: center;
  margin-bottom: 30px;
}

.logo h1 {
  font-size: 48px;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.logo p {
  color: var(--text-secondary);
  font-size: 18px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  background-color: #333;
  border: 1px solid #555;
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 16px;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-group small {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 5px;
}

/* Navigáció */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 50px;
  background: linear-gradient(180deg, rgba(7,10,10,0.7), rgba(7,10,10,0.5));
  border-bottom: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-left .logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  margin: 0;
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 4px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background-color: rgba(20, 184, 166, 0.12);
  border: 1px solid rgba(20, 184, 166, 0.18);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 15px;
}

/* Mobil nav viselkedés */
.mobile-toggle { display: none; color: var(--text-primary); }

@media (max-width: 820px) {
  .mobile-toggle {
    display: inline-flex;
    margin-right: 10px;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    -webkit-backdrop-filter: blur(var(--glass-blur));
    backdrop-filter: blur(var(--glass-blur));
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.35);
    color: var(--text-primary);
  }
  .mobile-toggle:hover {
    background-color: rgba(20, 184, 166, 0.12);
    border-color: rgba(20, 184, 166, 0.25);
  }
  .mobile-toggle:active {
    background-color: rgba(20, 184, 166, 0.18);
  }
  .btn-label { display: none; }
  .nav-menu {
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
    -webkit-backdrop-filter: blur(var(--glass-blur));
    backdrop-filter: blur(var(--glass-blur));
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 8px 10px 14px 10px;
    z-index: 999;
  }
  .nav-menu.show { display: flex; }
  .nav-menu li { width: 100%; }
  .nav-link { display: block; width: 100%; margin: 2px 0; }
}

.user-menu {
  position: relative;
}

.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background-color: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  margin-top: 10px;
  min-width: 200px;
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.dropdown.show {
  display: block;
}

.dropdown button {
  width: 100%;
  padding: 12px 20px;
  background: none;
  border: none;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.3s ease;
}

.dropdown button:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Tartalom */
.content {
  padding: 40px 50px;
}

.video-section {
  margin-bottom: 50px;
}

.video-section h2 {
  font-size: 28px;
  margin-bottom: 20px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.video-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
}

.video-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.55);
  border-color: rgba(20, 184, 166, 0.22);
}

.video-thumbnail {
  width: 100%;
  height: 150px;
  object-fit: cover;
  background: radial-gradient(800px 400px at 20% 0%, rgba(20, 184, 166, 0.06), transparent), #0b0e0e;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60px;
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-details {
  padding: 14px 14px 18px 14px;
}

.video-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.video-meta {
  font-size: 14px;
  color: var(--text-secondary);
}

.progress-indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background-color: rgba(20, 184, 166, 0.15);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-600));
  transition: width 0.25s ease;
}

.progress-text {
  position: absolute;
  top: 10px;
  right: 10px;
  background: linear-gradient(180deg, rgba(7,10,10,0.85), rgba(7,10,10,0.65));
  color: #ffffff;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3px;
  z-index: 15;
  border: 1px solid rgba(20, 184, 166, 0.28);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
}

/* Törlés gomb */
.delete-video-btn {
  position: absolute;
  top: 10px;
  left: 10px;
  background-color: rgba(229, 9, 20, 0.95);
  border: none;
  border-radius: 12px;
  width: 34px;
  height: 34px;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.2s ease;
  z-index: 10;
}

.video-card:hover .delete-video-btn {
  opacity: 1;
}

.delete-video-btn:hover {
  background-color: var(--primary-600);
  transform: translateY(-1px);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  overflow-y: auto;
}

.modal.show {
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-content {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  padding: 30px;
  border-radius: 14px;
  max-width: 800px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.close-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 32px;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  z-index: 10;
}

.close-btn:hover {
  color: var(--primary-color);
}

/* Video Player */
.player-container {
  max-width: 1200px;
}

#video-player {
  width: 100%;
  max-height: 70vh;
  background-color: #000;
  border-radius: 4px;
  margin: 20px 0;
}

.video-info {
  margin-top: 20px;
}

#player-title {
  margin-bottom: 15px;
}

/* Upload Choice Buttons */
.upload-choice-buttons {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px 0;
}

.btn-large {
  padding: 30px 40px;
  font-size: 20px;
  font-weight: bold;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.btn-large:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(229, 9, 20, 0.4);
}

/* Upload Form */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.progress-bar {
  width: 100%;
  height: 30px;
  background-color: #333;
  border-radius: 15px;
  overflow: hidden;
  margin: 20px 0;
}

.progress-fill {
  height: 100%;
  /* Feltűnő kék csík – fix gradient, hogy biztosan látszódjon minden környezetben */
  background: linear-gradient(90deg, #3b82f6, #2563eb);
  width: 0%;
  transition: width 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  border-radius: 15px;
}

#upload-status {
  text-align: center;
  color: var(--text-secondary);
}

/* Users List */
.users-header {
  margin-bottom: 20px;
}

.users-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.user-item {
  background-color: #2f2f2f;
  padding: 15px 20px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.user-info h3 {
  font-size: 18px;
  margin-bottom: 5px;
}

.user-info p {
  font-size: 14px;
  color: var(--text-secondary);
}

.user-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 600;
  margin-left: 10px;
}

.user-badge.admin {
  background-color: var(--primary-color);
}

.user-badge.user {
  background-color: var(--secondary-color);
}

.user-actions {
  display: flex;
  gap: 10px;
}

.user-actions button {
  padding: 8px 15px;
  font-size: 14px;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    padding: 15px 20px;
  }

  .nav-left {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }

  .nav-menu {
    flex-direction: column;
    width: 100%;
  }

  .nav-right {
    margin-top: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .content {
    padding: 20px;
  }

  .video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .login-box {
    padding: 40px 30px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .video-thumbnail { height: 120px; }
  .video-title { font-size: 14px; }
  .video-meta { font-size: 12px; }
}

/* Loading animation */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading {
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 20px auto;
}

#current-username{
  color: var(--text-primary);
}

.loginback{
  background: radial-gradient(1200px 700px at -10% -20%, rgba(20, 184, 166, 0.04), transparent), radial-gradient(900px 600px at 110% -10%, rgba(20, 184, 166, 0.035), transparent), linear-gradient(180deg, #0a0d0d 0%, #080a0a 100%);
}