/* --- SYSTEM VARIABLES --- */
:root {
  --bg-color: #080808;
  --terminal-bg: rgba(13, 13, 13, 0.95);
  --text-primary: #ffffff;
  --text-secondary: #888888;
  --text-desc-pc: #d61d1d;
  --accent-green: #22c55e;
  --accent-orange: #ffa500;
  --accent-blue: #3b82f6;
  --accent-red: #ef4444;
  --window-border: rgba(255, 255, 255, 0.1);
  --font-mono: "Space Mono", monospace;
  --font-sans: "Inter", sans-serif;
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- RESET & SCROLLBAR --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 10px;
  transition: background 0.3s;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-blue);
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  background-image:
    radial-gradient(
      circle at 0% 0%,
      rgba(59, 130, 246, 0.05) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 100% 100%,
      rgba(34, 197, 94, 0.03) 0%,
      transparent 50%
    );
  min-height: 100vh;
}

/* --- LAYOUT --- */
.container {
  width: 94%;
  max-width: 1600px;
  margin: 0 auto;
}

.main-header {
  padding: 2.5rem 0;
  text-align: left;
}
.logo {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  letter-spacing: 6px;
  font-weight: 700;
}
.logo span {
  color: var(--accent-blue);
  text-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}
.tagline {
  color: var(--text-secondary);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-top: 0.5rem;
}

.grid-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}
@media (min-width: 1024px) {
  .grid-layout {
    grid-template-columns: 380px 1fr;
  }
}

/* --- GLASS CARD & COMPONENTS --- */
.glass-card {
  background: var(--terminal-bg);
  border: 1px solid var(--window-border);
  padding: 1.5rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.section-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-blue);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title::after {
  content: "";
  flex-grow: 1;
  height: 1px;
  background: var(--window-border);
}

/* --- TOOLBAR --- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
}
.tool-group {
  display: flex;
  align-items: center;
  gap: 10px;
}
.separator {
  border-left: 1px solid var(--window-border);
  padding-left: 1.5rem;
}
.tool-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* --- FORMS --- */
.input-group {
  margin-bottom: 1.2rem;
}
.input-group label {
  font-size: 0.65rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  margin-bottom: 6px;
  display: block;
}

input {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--window-border);
  padding: 0.8rem;
  color: white;
  font-size: 0.9rem;
  transition: all 0.3s var(--transition-smooth);
}
input:focus {
  outline: none;
  border-color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.05);
}

.row-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

/* --- CUSTOM SELECT --- */
.custom-select-wrapper {
  position: relative;
  width: 100%;
}
.select-trigger {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--window-border);
  padding: 0.8rem 1rem;
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: 0.3s;
}
.select-trigger:hover {
  border-color: var(--accent-blue);
}
.select-trigger::after {
  content: "▾";
  color: var(--text-secondary);
  transition: 0.3s;
}
.custom-select-wrapper.open .select-trigger::after {
  transform: rotate(180deg);
  color: var(--accent-blue);
}

.custom-options {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #0f0f0f;
  border: 1px solid var(--accent-blue);
  z-index: 1000;
  max-height: 250px;
  overflow-y: auto;
  display: none;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
}
.custom-select-wrapper.open .custom-options {
  display: block;
  animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.custom-option {
  padding: 0.8rem 1rem;
  cursor: pointer;
  font-size: 0.8rem;
}
.custom-option:hover {
  background: rgba(59, 130, 246, 0.2);
}
.custom-option.selected {
  background: var(--accent-blue);
  color: black;
  font-weight: 700;
}

/* --- BUTTONS --- */
.btn {
  font-family: var(--font-mono);
  padding: 0.8rem 1.4rem;
  border: none;
  cursor: pointer;
  font-size: 0.7rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1px;
  transition: 0.3s var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-primary {
  background: var(--accent-blue);
  color: white;
}
.btn-primary:hover {
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
  transform: translateY(-2px);
}
.btn-accent {
  background: var(--accent-green);
  color: black;
}
.btn-secondary {
  background: var(--accent-orange);
  color: black;
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--window-border);
  color: white;
}
.btn-outline:hover {
  border-color: white;
  background: rgba(255, 255, 255, 0.05);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.65rem;
}

/* --- TIMETABLE DISPLAY --- */
.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.preview-controls {
  display: flex;
  gap: 12px;
}
.drag-info {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  gap: 5px;
}

.table-responsive {
  overflow-x: auto;
  border: 1px solid var(--window-border);
}
.timetable {
  width: 100%;
  border-collapse: collapse;
  min-width: 900px;
  table-layout: fixed;
}

.timetable th {
  padding: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.01);
  border-bottom: 2px solid var(--accent-blue);
  text-align: left;
}

.timetable td {
  border: 1px solid var(--window-border);
  height: 110px;
  vertical-align: top;
  padding: 6px;
  transition: background-color 0.2s ease;
}

/* Drop Zone Highlight */
.timetable td.drag-over {
  background: rgba(59, 130, 246, 0.2); /* Kicsit erősebb háttér */
  border: 2px dashed var(--accent-blue); /* Erősebb keret */
}

/* --- LESSON CARD --- */
.lesson-card {
  height: 100%;
  /* Dynamic color variable, fallback blue */
  --card-color: var(--accent-blue);
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--card-color);
  padding: 0.8rem;
  animation: fadeIn 0.4s ease-out;
  cursor: grab;
  position: relative;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
  user-select: none;
}
.lesson-card:active {
  cursor: grabbing;
}
.lesson-card:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.lesson-card.dragging {
  opacity: 0.4;
  transform: scale(0.95);
  border: 1px dashed var(--text-secondary);
}

.l-subject {
  display: block;
  font-weight: 600;
  color: var(--card-color);
  filter: brightness(1.2);
  font-size: 0.8rem;
  margin-bottom: 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.l-teacher {
  display: block;
  color: var(--text-secondary);
  font-size: 0.7rem;
}
.l-room {
  display: block;
  color: var(--text-primary);
  opacity: 0.7;
  font-size: 0.6rem;
  font-family: var(--font-mono);
  margin-top: 8px;
}
.l-remove {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-desc-pc);
  opacity: 0;
  transition: opacity 0.2s;
  cursor: pointer;
}
.lesson-card:hover .l-remove {
  opacity: 1;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* --- BELL LIST SIDEBAR --- */
.bell-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 180px;
  overflow-y: auto;
  margin-bottom: 1rem;
}
.bell-item {
  background: rgba(255, 255, 255, 0.02);
  padding: 0.6rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  font-family: var(--font-mono);
}
.btn-remove {
  color: var(--text-desc-pc);
  cursor: pointer;
  padding: 0 5px;
}

/* --- MODAL REDESIGN --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(5px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--transition-smooth);
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.modal-content {
  max-width: 480px;
  width: 90%;
  border: 1px solid var(--accent-blue);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  transform: translateY(20px);
  transition: transform 0.3s var(--transition-smooth);
  padding: 0;
  overflow: hidden;
}
.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-header {
  padding: 1.5rem 1.5rem 0.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.alert-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent-blue);
  color: black;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-family: var(--font-mono);
}
/* Conflict Mode */
.modal-content.conflict {
  border-color: var(--text-desc-pc);
}
.modal-content.conflict .alert-icon {
  background: var(--text-desc-pc);
  color: white;
}
.modal-content.conflict h3 {
  color: var(--text-desc-pc);
}

.modal-body {
  padding: 1rem 1.5rem;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.modal-actions {
  display: flex;
  gap: 15px;
  padding: 1.5rem;
  justify-content: flex-end;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--window-border);
}

.main-footer {
  text-align: center;
  padding: 4rem 0;
  opacity: 0.4;
  font-size: 0.6rem;
  font-family: var(--font-mono);
  letter-spacing: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}