/* ===== Base Reset & Variables ===== */
:root {
  --bg-dark: #0f0f1a;
  --bg-card: #1a1a2e;
  --accent: #e94560;
  --accent-hover: #ff6b81;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b8;
  --input-bg: #16213e;
  --input-border: #2a2a4a;
  --input-focus: #e94560;
  --success: #00c853;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ===== Submission Page ===== */
.submit-container {
  width: 100%;
  max-width: 480px;
  padding: 24px 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  text-align: center;
  margin-bottom: 32px;
  padding-top: 20px;
}

.header .logo-img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 12px;
  display: block;
}

.header h1 {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #ff9a9e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.header p {
  color: var(--text-secondary);
  font-size: 15px;
}

/* ===== Disclaimer ===== */
.disclaimer {
  background: rgba(233, 69, 96, 0.15);
  border: 1px solid rgba(233, 69, 96, 0.3);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
  text-align: center;
}

.disclaimer a {
  color: #ff6b81;
  font-weight: 700;
  text-decoration: underline;
  display: inline;
  margin-left: 4px;
}

.disclaimer a:hover {
  text-decoration: underline;
  color: var(--accent-hover);
}

/* ===== Form ===== */
.song-form {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: var(--shadow);
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group label .required {
  color: var(--accent);
}

.form-group input {
  width: 100%;
  padding: 14px 16px;
  background: var(--input-bg);
  border: 2px solid var(--input-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 16px;
  transition: border-color 0.2s ease;
  outline: none;
}

.form-group input::placeholder {
  color: #4a4a6a;
}

.form-group input:focus {
  border-color: var(--input-focus);
}

/* ===== Performance Type Toggle ===== */
.type-toggle {
  display: flex;
  gap: 0;
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid var(--input-border);
  background: var(--input-bg);
}

.type-btn {
  flex: 1;
  padding: 14px 16px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  white-space: nowrap;
}

.type-btn:first-child {
  border-right: 1px solid var(--input-border);
}

.type-btn.active {
  background: var(--accent);
  color: white;
}

.type-btn:not(.active):hover {
  background: rgba(233, 69, 96, 0.15);
  color: var(--text-primary);
}

.submit-btn {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--accent), #c0392b);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(233, 69, 96, 0.4);
}

.submit-btn:active {
  transform: translateY(0);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ===== Success Message ===== */
.success-message {
  display: none;
  text-align: center;
  padding: 24px;
  background: var(--bg-card);
  border-radius: 16px;
  margin-top: 20px;
  box-shadow: var(--shadow);
  animation: slideUp 0.3s ease;
}

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

.success-message .check {
  font-size: 48px;
  margin-bottom: 12px;
}

.success-message h3 {
  color: var(--success);
  font-size: 20px;
  margin-bottom: 6px;
}

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

.remaining-info {
  color: var(--accent) !important;
  font-weight: 600;
  font-size: 13px !important;
  margin-top: 8px;
}

.success-message .song-info {
  margin: 12px 0;
  padding: 12px;
  background: var(--input-bg);
  border-radius: 8px;
  font-size: 15px;
}

.success-message .song-info strong {
  color: var(--accent);
}

.add-another-btn {
  margin-top: 16px;
  padding: 12px 24px;
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.add-another-btn:hover {
  background: var(--accent);
  color: white;
}

/* ===== Queue Count ===== */
.queue-count {
  text-align: center;
  margin-top: 20px;
  padding: 12px;
  color: var(--text-secondary);
  font-size: 14px;
}

.queue-count strong {
  color: var(--accent);
}

/* ===== Animations ===== */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Admin Page ===== */
.admin-container {
  width: 100%;
  max-width: 1000px;
  padding: 24px 20px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.admin-header h1 {
  font-size: 24px;
  background: linear-gradient(135deg, var(--accent), #ff9a9e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.btn {
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-danger {
  background: #c0392b;
  color: white;
}

.btn-danger:hover {
  background: #e74c3c;
}

.btn-secondary {
  background: var(--input-bg);
  color: var(--text-primary);
  border: 1px solid var(--input-border);
}

.btn-secondary:hover {
  border-color: var(--accent);
}

/* ===== Filter Tabs ===== */
.filter-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filter-tab {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--input-border);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-tab.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.filter-tab .count {
  margin-left: 4px;
  opacity: 0.7;
}

/* ===== Song Table ===== */
.song-table {
  width: 100%;
  background: var(--bg-card);
  border-radius: 12px;
  overflow-x: auto;
  overflow-y: hidden;
  box-shadow: var(--shadow);
}

.song-table table {
  width: 100%;
  border-collapse: collapse;
}

.song-table th {
  text-align: left;
  padding: 14px 16px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  background: var(--input-bg);
  border-bottom: 1px solid var(--input-border);
}

.song-table td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--input-border);
  vertical-align: middle;
}

.song-table tr:last-child td {
  border-bottom: none;
}

.song-table tr:hover {
  background: rgba(233, 69, 96, 0.05);
}

.status-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.status-waiting {
  background: rgba(52, 152, 219, 0.2);
  color: #5dade2;
}

.status-current {
  background: rgba(233, 69, 96, 0.2);
  color: var(--accent);
}

.status-sung {
  background: rgba(0, 200, 83, 0.2);
  color: var(--success);
}

.action-btn {
  padding: 6px 10px;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-right: 4px;
}

.action-btn.edit {
  background: rgba(52, 152, 219, 0.2);
  color: #5dade2;
}

.action-btn.delete {
  background: rgba(231, 76, 60, 0.2);
  color: #e74c3c;
}

.action-btn:hover {
  opacity: 0.8;
  transform: scale(1.05);
}

.action-btn.force {
  background: rgba(243, 156, 18, 0.2);
  color: #f39c12;
  font-size: 14px;
}

.action-btn.force.active {
  background: rgba(243, 156, 18, 0.5);
  color: #fff;
  box-shadow: 0 0 8px rgba(243, 156, 18, 0.4);
}

.action-btn.score-reset {
  background: rgba(46, 204, 113, 0.2);
  color: #2ecc71;
  font-size: 14px;
}

.action-btn.score-reset.active {
  background: rgba(46, 204, 113, 0.5);
  color: #fff;
  box-shadow: 0 0 8px rgba(46, 204, 113, 0.4);
}

.score-value {
  font-family: 'SF Mono', 'Menlo', monospace;
  font-size: 13px;
  color: #5dade2;
}

.score-adj-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid #2a2a4a;
  border-radius: 4px;
  background: #16213e;
  color: #a0a0b8;
  font-size: 14px;
  cursor: pointer;
  vertical-align: middle;
  line-height: 1;
  padding: 0;
}

.score-adj-btn:hover {
  background: #e94560;
  color: #fff;
  border-color: #e94560;
}

/* ===== Batch Action Bar ===== */
.batch-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.batch-bar span {
  font-weight: 700;
  color: var(--accent);
  margin-right: 8px;
}

/* ===== Row Selection ===== */
.row-check {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--accent);
}

#selectAll {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--accent);
}

.row-selected {
  background: rgba(233, 69, 96, 0.08) !important;
}

/* ===== Forced Next Indicator ===== */
.row-forced {
  background: rgba(243, 156, 18, 0.08) !important;
  border-left: 3px solid #f39c12;
}

.forced-badge {
  display: inline-block;
  background: rgba(243, 156, 18, 0.25);
  color: #f39c12;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: 6px;
  vertical-align: middle;
  animation: pulse-badge 1.5s ease-in-out infinite;
}

@keyframes pulse-badge {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.featured-badge {
  display: inline-block;
  background: rgba(245, 166, 35, 0.2);
  color: #f5a623;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: 6px;
  vertical-align: middle;
}

.skip-badge {
  display: inline-block;
  background: rgba(149, 165, 166, 0.25);
  color: #95a5a6;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
}

.shelved-badge {
  display: inline-block;
  background: rgba(155, 89, 182, 0.25);
  color: #bb8fce;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: 6px;
  vertical-align: middle;
}

.action-btn.shelve {
  background: rgba(155, 89, 182, 0.2);
  color: #bb8fce;
  font-size: 14px;
}

.action-btn.unshelve {
  background: rgba(155, 89, 182, 0.5);
  color: #fff;
  font-size: 14px;
  box-shadow: 0 0 8px rgba(155, 89, 182, 0.4);
}

.featured-toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #f5a623;
  cursor: pointer;
  padding: 8px 12px;
  background: rgba(245, 166, 35, 0.1);
  border: 1px solid rgba(245, 166, 35, 0.25);
  border-radius: 8px;
}

.featured-toggle-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: #f5a623;
}

/* ===== Group Headers ===== */
.group-header-row {
  background: var(--input-bg) !important;
}

.group-header {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  padding: 10px 16px !important;
  letter-spacing: 0.3px;
}

/* ===== Login Screen ===== */
.login-screen {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  width: 100%;
}

.login-box {
  background: var(--bg-card);
  padding: 36px 32px;
  border-radius: 16px;
  width: 90%;
  max-width: 360px;
  box-shadow: var(--shadow);
  text-align: center;
}

.login-box h1 {
  margin-bottom: 8px;
  font-size: 24px;
}

.login-box p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 14px;
}

.login-box .form-group {
  margin-bottom: 16px;
  text-align: left;
}

.login-error {
  color: var(--accent);
  font-size: 13px;
  margin-bottom: 12px;
  text-align: left;
}

/* ===== Edit Modal ===== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 100;
  justify-content: center;
  align-items: center;
}

.modal-overlay.show {
  display: flex;
}

.modal {
  background: var(--bg-card);
  padding: 28px;
  border-radius: 16px;
  width: 90%;
  max-width: 420px;
  box-shadow: var(--shadow);
}

.modal h2 {
  margin-bottom: 20px;
  font-size: 20px;
}

.modal .form-group {
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}

.empty-state .icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.empty-state p {
  font-size: 15px;
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .song-table {
    overflow-x: auto;
  }

  .admin-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== Stats Bar ===== */
.stats-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.stat {
  flex: 1;
  min-width: 80px;
  background: var(--bg-card);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow);
}

.stat-value {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}

/* ===== Performance Type Badge ===== */
.perf-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  vertical-align: middle;
  margin-left: 6px;
}

.perf-badge.instrument {
  background: rgba(155, 89, 182, 0.25);
  color: #bb8fce;
}

.perf-badge.karaoke {
  background: rgba(233, 69, 96, 0.2);
  color: #ff9a9e;
}

/* ===== YouTube Link ===== */
.yt-link {
  color: #ff4444;
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
}

.yt-link:hover {
  text-decoration: underline;
}

.device-id {
  display: inline-block;
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: middle;
  font-family: monospace;
  font-size: 12px;
  color: var(--text-secondary, #888);
}

/* ===== Form Select ===== */
.form-select {
  width: 100%;
  padding: 14px 16px;
  background: var(--input-bg);
  border: 2px solid var(--input-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
}

.form-select:focus {
  border-color: var(--input-focus);
}