@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #0b1020;
  --panel: rgba(17, 24, 39, 0.85);
  --panel-border: rgba(255,255,255,0.08);
  --card: rgba(255,255,255,0.04);
  --text: #f3f4f6;
  --text-secondary: #9ca3af;
  --accent: #7c3aed;
  --accent-hover: #8b5cf6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --shadow: 0 10px 40px rgba(0,0,0,0.35);
  --radius: 22px;
}

[data-theme="light"] {
  --bg: #f5f7fb;
  --panel: rgba(255,255,255,0.92);
  --panel-border: rgba(0,0,0,0.06);
  --card: rgba(0,0,0,0.025);
  --text: #111827;
  --text-secondary: #6b7280;
  --accent: #6d28d9;
  --accent-hover: #7c3aed;
  --shadow: 0 10px 30px rgba(0,0,0,0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: 'Inter', sans-serif;
  background:
    var(--bg);
  color: var(--text);
}

body {
  padding: 24px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 20px 28px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

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

.app-body {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 24px;
}

.control-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.card,
.info-panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 22px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.preset-select,
.text-input,
.param-input {
  width: 100%;
  border: 1px solid var(--panel-border);
  background: var(--card);
  color: var(--text);
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 14px;
  outline: none;
  transition: all 0.2s ease;
}

.preset-select:focus,
.text-input:focus,
.param-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(124,58,237,0.2);
}

.input-group {
  margin-bottom: 16px;
}

.input-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.formula-display {
  color: #a78bfa;
  font-weight: 600;
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.slider-label {
  width: 70px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ==================== SLIDERS ==================== */
.slider {
  flex: 1;
  appearance: none;
  height: 7px;
  border-radius: 999px;
  background: rgba(255,255,255,0.18);        /* Тёмная тема */
  outline: none;
  cursor: pointer;
}

[data-theme="light"] .slider {
  background: #cbd5e1;                       /* Светлая тема — хорошо видимый трек */
}

.slider::-webkit-slider-thumb {
  appearance: none;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2.5px solid white;
  box-shadow: 0 4px 12px rgba(124,58,237,0.5);
}

[data-theme="light"] .slider::-webkit-slider-thumb {
  border-color: #e2e8f0;
  box-shadow: 0 3px 10px rgba(0,0,0,0.2);
}

.slider-value {
  width: 42px;
  text-align: right;
  font-size: 13px;
  color: var(--text);
}

.functional-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.functional-tab {
  flex: 1;
  border: none;
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  color: var(--text-secondary);
  padding: 11px 8px;           /* уменьшили padding */
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s ease;
  font-size: 13.8px;           /* чуть уменьшили шрифт */
  white-space: nowrap;         /* предотвращает перенос */
  overflow: hidden;
  text-overflow: ellipsis;     /* если всё равно не влезет — многоточие */
}

[data-theme="light"] .functional-tab {
  background: #e2e8f0;
  color: #475569;
}

.functional-tab:hover {
  background: rgba(255,255,255,0.12);
}

[data-theme="light"] .functional-tab:hover {
  background: #cbd5e1;
}

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

.param-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.param-label {
  font-size: 12px;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.buttons-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.btn {
  border: none;
  border-radius: 14px;
  padding: 13px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 14px;
}

.btn:hover:not(:disabled) {
  transform: translateY(-2px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

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

.btn-stop {
  background: rgba(239,68,68,0.15);
  color: #fca5a5;
}

.btn-step {
  background: rgba(59,130,246,0.15);
  color: #93c5fd;
}

.btn-reset {
  background: rgba(255,255,255,0.06);
  color: var(--text);
}

.btn-export {
  flex: 1;
  background: rgba(255,255,255,0.06);
  color: var(--text);
}

.progress-bar-wrap {
  margin-top: 16px;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255,255,255,0.06);
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #7c3aed, #3b82f6);
  transition: width 0.3s ease;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.info-row:last-child {
  border-bottom: none;
}

.info-key {
  color: var(--text-secondary);
  font-size: 13px;
}

.info-value {
  font-weight: 700;
}

.info-value.success {
  color: var(--success);
}

.info-value.warning {
  color: var(--warning);
}

.info-value.error {
  color: var(--danger);
}

.highlight {
  color: #a78bfa;
}

.status-message {
  margin-top: 16px;
  padding: 12px;
  border-radius: 14px;
  font-size: 13px;
}

.status-message.capture {
  background: rgba(16,185,129,0.12);
  color: #6ee7b7;
}

.status-message.suboptimal {
  background: rgba(245,158,11,0.12);
  color: #fcd34d;
}

.status-message.no-capture {
  background: rgba(239,68,68,0.12);
  color: #fca5a5;
}

.hidden {
  display: none;
}

.plots-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.plot-container {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 320px;
  padding: 12px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.plot-div {
  width: 100%;
  height: 320px;
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
}

.theme-toggle input {
  display: none;
}

.theme-toggle-track {
  width: 54px;
  height: 30px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  position: relative;
  cursor: pointer;
}

.theme-toggle-thumb {
  position: absolute;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: white;
  top: 3px;
  left: 4px;
  transition: all 0.25s ease;
}

.theme-toggle input:checked + .theme-toggle-track .theme-toggle-thumb {
  left: 26px;
}

.mt-4 {
  margin-top: 4px;
}

.mt-8 {
  margin-top: 8px;
}

.divider {
  height: 1px;
  background: rgba(255,255,255,0.08);
}

.input-error-msg {
  margin-top: 6px;
  color: #fca5a5;
  font-size: 12px;
}

.text-input.error {
  border-color: var(--danger);
}

.text-input.ok {
  border-color: var(--success);
}

.param-input.warning {
  border-color: var(--warning);
}

@media (max-width: 1200px) {
  .app-body {
    grid-template-columns: 1fr;
  }

  .plots-panel {
    order: -1;
  }
}


/* ==================== WELCOME CARD ==================== */
.welcome-card {
  background: linear-gradient(135deg, rgba(124,58,237,0.12), rgba(124,58,237,0.06));
  border: 1px solid rgba(124,58,237,0.35);
  margin-bottom: 20px;
}

.welcome-title {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: -0.015em;
}

.welcome-text {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* Светлая тема */
[data-theme="light"] .welcome-card {
  background: linear-gradient(135deg, rgba(109,40,217,0.09), rgba(109,40,217,0.04));
  border-color: rgba(109,40,217,0.25);
}

[data-theme="light"] .welcome-title {
  color: #6d28d9;
}

/* ==================== FUNCTIONAL TABS (Светлая тема) ==================== */
.functional-tab {
  flex: 1;
  border: none;
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  color: var(--text-secondary);
  padding: 12px 10px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s ease;
  font-size: 14px;
}

[data-theme="light"] .functional-tab {
  background: #e2e8f0;
  color: #475569;
}

.functional-tab:hover {
  background: rgba(255,255,255,0.12);
}

[data-theme="light"] .functional-tab:hover {
  background: #cbd5e1;
}

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

/* ==================== КНОПКИ (Экспорт, Сброс и т.д.) ==================== */
.btn-export {
  flex: 1;
  background: rgba(255,255,255,0.08);
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.1);
}

[data-theme="light"] .btn-export {
  background: #f1f5f9;
  color: #1e2937;
  border-color: #cbd5e1;
}

.btn-reset {
  background: rgba(255,255,255,0.08);
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.1);
}

[data-theme="light"] .btn-reset {
  background: #f1f5f9;
  color: #1e2937;
  border-color: #cbd5e1;
}




@media (max-width: 640px) {
  body {
    padding: 14px;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .param-grid,
  .buttons-grid {
    grid-template-columns: 1fr;
  }
}

/* ==================== INFO ICON ==================== */
.info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(124,58,237,0.15);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  cursor: help;
  margin-left: 8px;
  border: 1px solid rgba(124,58,237,0.3);
  transition: all 0.2s ease;
}

.info-icon:hover {
  background: var(--accent);
  color: white;
  transform: scale(1.1);
}

[data-theme="light"] .info-icon {
  background: rgba(109,40,217,0.15);
  color: #6d28d9;
  border-color: rgba(109,40,217,0.3);
}

/* Улучшение select */
.preset-select {
  font-size: 15px;
  font-weight: 500;
  padding: 13px 14px;
}

/* Описание пресета */
.preset-desc {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--text-secondary);
  padding: 12px 14px;
  background: var(--card);
  border-radius: 12px;
  border-left: 3px solid var(--accent);
}

/* ==================== LIGHT THEME IMPROVEMENTS ==================== */

/* Переключатель темы — лучше видно в светлой теме */
.theme-toggle {
  color: var(--text-secondary);
}

[data-theme="light"] .theme-toggle-track {
  background: #e2e8f0;
}

[data-theme="light"] .theme-toggle-thumb {
  background: #4f46e5;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

/* Кнопки в светлой теме */
.btn-stop {
  background: rgba(239,68,68,0.12);
  color: #ef4444;
  border: 1px solid rgba(239,68,68,0.2);
}

[data-theme="light"] .btn-stop {
  background: #fee2e2;
  color: #b91c1c;
}

.btn-step {
  background: rgba(59,130,246,0.12);
  color: #3b82f6;
  border: 1px solid rgba(59,130,246,0.2);
}

[data-theme="light"] .btn-step {
  background: #dbeafe;
  color: #1e40af;
}

.btn-reset, .btn-export {
  border: 1px solid #cbd5e1;
}

[data-theme="light"] .btn-reset,
[data-theme="light"] .btn-export {
  background: #f8fafc;
  color: #1e2937;
}

/* Разделительные линии в блоке "Результаты" */
.info-row {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

[data-theme="light"] .info-row {
  border-bottom: 1px solid #e2e8f0;
}

.info-row:last-child {
  border-bottom: none;
}

/* Улучшение читаемости статус-сообщений в светлой теме */
.status-message.capture {
  background: #ecfdf5;
  color: #0f766e;
}

.status-message.suboptimal {
  background: #fefce8;
  color: #854d0e;
}

.status-message.no-capture {
  background: #fef2f2;
  color: #b91c1c;
}

/* ==================== PLOT HEADERS ==================== */
.plot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 10px 16px;
  border-bottom: 1px solid var(--panel-border);
  margin-bottom: 4px;
  flex-shrink: 0;           /* Важно! */
}

.plot-title {
  font-weight: 600;
  font-size: 15.5px;
  color: var(--text);
}

.plot-container {
  display: flex;
  flex-direction: column;
   height: 400px;
}

.plot-div {
  flex: 1;
  min-height: 0;
}

/* ==================== ФИНАЛЬНЫЕ УЛУЧШЕНИЯ ==================== */

/* Лучшая читаемость card-title */
.card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15.5px;
}

/* Улучшение info-icon в светлой теме */
[data-theme="light"] .info-icon {
  background: rgba(109,40,217,0.2);
  color: #6d28d9;
}

/* Увеличение контраста для статус-сообщений */
.status-message {
  font-weight: 500;
}

/* Небольшое улучшение отступов в plot-container */
.plot-container {
  padding: 16px;
}

.plot-header {
  padding: 8px 4px 12px 4px;
}