/* ========================================
   Parameters Page - Material 3
   ======================================== */

:root {
  /* M3 color tokens - based on existing primary #2195f2 */
  --md-sys-color-primary: #2195f2;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #d1e4ff;
  --md-sys-color-surface: #ffffff;
  --md-sys-color-on-surface: #1c1b1f;
  --md-sys-color-on-surface-variant: #49454f;
  --md-sys-color-surface-variant: #e7e0ec;
  --md-sys-color-surface-container-highest: #e6e1e5;
  --md-sys-color-outline: #79747e;
  --md-sys-color-outline-variant: #cac4d0;
  --md-sys-color-inverse-surface: #313033;
  --md-sys-color-inverse-on-surface: #f4eff4;
  --md-sys-color-error: #b3261e;
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-overlay: rgba(0, 0, 0, 0.32);

  /* M3 typography */
  --md-sys-typescale-body-large: 400 1rem/1.5rem 'Roboto', 'Segoe UI', sans-serif;
  --md-sys-typescale-body-medium: 400 0.875rem/1.25rem 'Roboto', 'Segoe UI', sans-serif;
  --md-sys-typescale-label-large: 500 0.875rem/1.25rem 'Roboto', 'Segoe UI', sans-serif;
  --md-sys-typescale-headline-small: 400 1.5rem/2rem 'Roboto', 'Segoe UI', sans-serif;

  /* M3 motion */
  --md-sys-motion-duration-short: 200ms;
  --md-sys-motion-duration-medium: 300ms;
  --md-sys-motion-easing-standard: cubic-bezier(0.2, 0, 0, 1);
}

/* ========================================
   Container - Vertical list layout
   ======================================== */

.parameters-container {
  display: flex;
  flex-direction: column;
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 0;
  font-family: 'Roboto', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--md-sys-color-surface);
  min-height: 100vh;
  box-sizing: border-box;
}

/* ========================================
   List Item (replaces card)
   ======================================== */

.param-list-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  padding: 12px 16px;
  min-height: 56px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  position: relative;
  transition: background-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.param-list-item:last-child {
  border-bottom: none;
}

.param-list-item:hover {
  background-color: rgba(28, 27, 31, 0.08);
}

/* Content area: headline + supporting text */
.param-content {
  flex: 1;
  min-width: 0;
  margin-right: 16px;
}

/* Headline - body-large M3 */
.param-headline {
  font: var(--md-sys-typescale-body-large);
  color: var(--md-sys-color-on-surface);
  margin: 0;
}

/* Supporting text - body-medium M3 */
.param-supporting-text {
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-variant);
  margin: 4px 0 0 0;
}

/* Trailing element container */
.param-trailing {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

/* ========================================
   Number Value - Chip style
   ======================================== */

.param-value-number {
  font: var(--md-sys-typescale-label-large);
  color: var(--md-sys-color-on-surface-variant);
  padding: 6px 16px;
  background: var(--md-sys-color-surface-variant);
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: background-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.param-value-number:hover {
  background: var(--md-sys-color-surface-container-highest);
}

/* ========================================
   Select - Material 3
   ======================================== */

.param-select {
  font: var(--md-sys-typescale-body-large);
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: 4px;
  padding: 8px 32px 8px 12px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2349454f' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: border-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.param-select:hover {
  border-color: var(--md-sys-color-on-surface);
}

.param-select:focus {
  outline: none;
  border-color: var(--md-sys-color-primary);
  border-width: 2px;
  padding: 7px 31px 7px 11px;
}

/* ========================================
   Toggle Switch - Material 3
   ======================================== */

.param-toggle {
  position: relative;
  width: 52px;
  height: 32px;
  background: var(--md-sys-color-surface-variant);
  border: 2px solid var(--md-sys-color-outline);
  border-radius: 16px;
  cursor: pointer;
  transition: background-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              border-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
  box-sizing: border-box;
}

.param-toggle.active {
  background: var(--md-sys-color-primary);
  border-color: var(--md-sys-color-primary);
}

.param-toggle-knob {
  position: absolute;
  top: 50%;
  left: 2px;
  width: 16px;
  height: 16px;
  background: var(--md-sys-color-outline);
  border-radius: 50%;
  transform: translateY(-50%);
  transition: transform var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              width var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              height var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              left var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              background-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.param-toggle.active .param-toggle-knob {
  width: 24px;
  height: 24px;
  left: calc(100% - 26px);
  background: var(--md-sys-color-on-primary);
}

.param-toggle:hover .param-toggle-knob {
  width: 20px;
  height: 20px;
  left: 0px;
}

.param-toggle.active:hover .param-toggle-knob {
  width: 28px;
  height: 28px;
  left: calc(100% - 30px);
}

/* ========================================
   Text Frame
   ======================================== */

.param-text-frame {
  width: 100%;
  flex-basis: 100%;
  margin-top: 8px;
  padding: 12px 16px;
  background: var(--md-sys-color-surface-variant);
  border-radius: 12px;
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  transition: background-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
  word-break: break-word;
  box-sizing: border-box;
}

.param-text-frame:hover {
  background: var(--md-sys-color-surface-container-highest);
}

/* ========================================
   Overlay & Spinner - M3 circular progress
   ======================================== */

.param-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--md-sys-color-overlay);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-sys-motion-duration-medium) ease,
              visibility var(--md-sys-motion-duration-medium) ease;
}

.param-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.param-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid transparent;
  border-top-color: var(--md-sys-color-primary);
  border-radius: 50%;
  animation: param-spin 0.8s linear infinite;
}

@keyframes param-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   Popup Modal - M3 Dialog
   ======================================== */

.param-popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--md-sys-color-overlay);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-sys-motion-duration-medium) ease,
              visibility var(--md-sys-motion-duration-medium) ease;
}

.param-popup-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.param-popup {
  background: var(--md-sys-color-surface);
  border-radius: 28px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 8px 24px rgba(0, 0, 0, 0.14);
  padding: 24px;
  width: 90%;
  max-width: 420px;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-standard);
}

.param-popup-overlay.visible .param-popup {
  transform: scale(1) translateY(0);
}

.param-popup-title {
  font: var(--md-sys-typescale-headline-small);
  color: var(--md-sys-color-on-surface);
  margin: 0 0 16px 0;
}

.param-popup-input {
  width: 100%;
  padding: 12px 16px;
  font: var(--md-sys-typescale-body-large);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: 4px;
  outline: none;
  transition: border-color var(--md-sys-motion-duration-short) ease;
  box-sizing: border-box;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
}

.param-popup-input:focus {
  border-color: var(--md-sys-color-primary);
  border-width: 2px;
  padding: 11px 15px;
}

.param-popup-textarea {
  width: 100%;
  min-height: 120px;
  padding: 12px 16px;
  font: var(--md-sys-typescale-body-large);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: 4px;
  outline: none;
  resize: vertical;
  transition: border-color var(--md-sys-motion-duration-short) ease;
  box-sizing: border-box;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
}

.param-popup-textarea:focus {
  border-color: var(--md-sys-color-primary);
  border-width: 2px;
  padding: 11px 15px;
}

.param-popup-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 24px;
}

.param-popup-btn {
  padding: 10px 24px;
  font: var(--md-sys-typescale-label-large);
  border: none;
  border-radius: 20px;
  cursor: pointer;
  transition: background-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.param-popup-btn:active {
  transform: scale(0.97);
}

/* Cancel - M3 text button */
.param-popup-btn-cancel {
  background: transparent;
  color: var(--md-sys-color-primary);
}

.param-popup-btn-cancel:hover {
  background: rgba(33, 149, 242, 0.08);
}

/* Save - M3 filled button */
.param-popup-btn-save {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.param-popup-btn-save:hover {
  background: #1a7fd4;
}

/* ========================================
   Snackbar (replaces Toast) - M3
   ======================================== */

.param-snackbar-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.param-snackbar {
  background: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  padding: 14px 16px;
  border-radius: 4px;
  font: var(--md-sys-typescale-body-medium);
  box-shadow: 0 3px 5px rgba(0, 0, 0, 0.2), 0 6px 10px rgba(0, 0, 0, 0.14);
  max-width: 480px;
  min-width: 280px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-standard),
              transform var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-standard);
}

.param-snackbar.visible {
  opacity: 1;
  transform: translateY(0);
}

.param-snackbar.error {
  background: var(--md-sys-color-error);
  color: var(--md-sys-color-on-error);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 480px) {
  .parameters-container {
    padding: 8px 0;
  }

  .param-list-item {
    padding: 12px 16px;
  }

  .param-popup {
    padding: 24px 16px;
    width: 95%;
    border-radius: 28px;
  }

  .param-snackbar {
    min-width: auto;
    max-width: calc(100vw - 32px);
  }
}