/* style.css */
:root {
  --content-max-xs: 425px;
  /* small containers */
  --content-max-sm: 540px;
  /* small containers */
  --content-max-md: 720px;
  /* medium */
  --content-max-lg: 960px;
  /* large */
  --content-max-xl: 1140px;
  /* extra large */
  --content-max-2xl: 1320px;
  /* very large desktops */

  --bp-xs: 480px;
  /* extra small phones */
  --bp-sm: 576px;
  /* phones */
  --bp-md: 640px;
  /* phablets / small tablets */
  --bp-lg: 768px;
  /* tablets portrait */
  --bp-xl: 1024px;
  /* tablets landscape / laptops */
  --bp-2xl: 1280px;
  /* desktops */

  /*:root.theme-yellowblue-normal */
  --text-color: #1a1a1a;
  --text-muted: #555555;
  --text-placeholder: #888888;
  --text-inverted: #ffffff;
  --background-color: #fffdf5;
  --surface-color: #fff9e6;
  --surface-alt-color: #fff2cc;
  --surface-hover: #ffe699;
  --surface-selected: #ffd966;
  --border-color: #e6c200;
  --border-strong: #b39700;
  --border-focus: #2f80ff;
  --primary: #006bb3;
  --primary-hover: #005fa3;
  --primary-active: #004b87;
  --primary-bg: #cce0ff;
  --primary-bg-hover: #b3d1ff;
  --primary-border: #99c2ff;
  --primary-text: #ffffff;
  --success: #007a42;
  --success-hover: #006837;
  --success-active: #005c31;
  --success-bg: #e0fff0;
  --success-border: #99e6c0;
  --success-text: #ffffff;
  --warning: #cc7a00;
  --warning-hover: #b36b00;
  --warning-active: #995c00;
  --warning-bg: #fff2e0;
  --warning-border: #ffd1a3;
  --warning-text: #000000;
  --danger: #b30000;
  --danger-hover: #990000;
  --danger-active: #800000;
  --danger-bg: #ffd9d9;
  --danger-border: #ffb3b3;
  --danger-text: #ffffff;
  --selection-bg: #b3daff;
  --selection-text: #000000;
  --overlay-clear: rgba(0, 0, 0, 0);
  --overlay-bg: rgba(0, 0, 0, 1);
  --tooltip-bg: var(--text-color);
  --tooltip-text: var(--text-inverted);
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.2);
  --shadow-strong: rgba(0, 0, 0, 0.4);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  padding: 12px;
  overflow-x: hidden;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: var(--background-color);
  color: var(--text-color);
}

.scroll-container {
  height: calc(var(--vh, 1vh) * 100);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.scroll-container::-webkit-scrollbar {
  display: none;
}

.layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: var(--content-max-xs);
  margin: 0 auto;
}

h2,
h5,
h6 {
  width: 100%;
  margin-bottom: 10px;
  overflow-wrap: anywhere;
}

h2 {
  margin: 0;
  font-size: 22px;
  text-shadow: 1px 1px 2px var(--shadow-light);
}

h5 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 14px;
  font-style: italic;
  text-align: right;
}

input {
  background-color: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  width: 120px;
  box-shadow: none;
  padding: 4px 8px;
  font-size: 0.95em;
  text-align: center;
  color: var(--text-color);
  outline: none;
}

select {
  background-color: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  width: 120px;
  box-shadow: none;
  padding: 4px 8px;
  font-size: 0.95em;
  text-align: center;
  color: var(--text-color);
  /* outline: none; */
}

select:hover {
  border-color: var(--border-color);
}

select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* span, */
label {
  font-weight: 600;
  font-size: 0.95em;
  color: var(--text-muted);
  white-space: nowrap;
  user-select: none;
}

label.disabled {
  opacity: 0.5;
  pointer-events: none;
  cursor: default;
}

textarea {
  border: 2px solid var(--border-color);
  border-radius: 6px;
  font-family: Arial, sans-serif;
  font-size: 16px;
  line-height: 1.4;
  color: var(--text-color);
  min-height: 90px;
  overflow-y: auto;
  padding: 8px;
  resize: vertical;
  transition: border-color 0.2s ease;
  width: 100%;
}

textarea::placeholder {
  color: var(--text-color);
}

textarea:focus {
  border-color: var(--border-color);
  outline: none;
}

button {
  width: 100%;
  max-width: 120px;
  padding: 4px 4px;
  font-size: 0.95em;
  font-weight: 600;
  color: var(--text-color);
  background: var(--primary-bg);
  border: 2px solid var(--primary-border);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s;
  cursor: pointer;
}

button:hover {
  background: var(--primary-bg-hover);
  border-color: var(--primary-hover);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.version {
  display: block;
  margin-top: 0;
  font-size: 12px;
  font-style: italic;
}

.titles-container {
  display: flex;
  align-items: center;
  justify-content: left;
  width: 100%;
}

.title-icon {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  margin-right: 8px;
  filter: drop-shadow(1px 1px 2px var(--shadow-light));
}

.setting-row {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin-left: 0;
  /* margin-bottom: 4px; */
  padding: 8px 0;
  gap: 12px;
  border-top: 1px solid var(--border-color);
}

.reset-settings-group {
  display: flex;
  flex-direction: row;
  justify-content: left;
  align-items: center;
  width: 100%;
  margin-left: 0;
  margin-bottom: 4px;
  gap: 12px;
  padding-top: 8px;
  opacity: 0.75;
  /* border-top: 1px solid var(--border-color); */
}

.help-app-btn,
.reset-settings-btn {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  outline: none;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.help-app-btn {
  font-size: 26px;
  background: var(--background-color);
}

.reset-settings-btn {
  font-size: 18px;
  background: var(--surface-color);
}

.help-app-btn .i-icon {
  display: inline-block;
  transform: scaleY(0.98);
  line-height: 1;
}

.reset-settings-btn .reset-icon {
  opacity: 0.8;
}

.reset-settings-text {
  font-weight: 600;
  font-size: 0.85em;
  color: var(--text-muted);
  white-space: nowrap;
  user-select: none;
}

.section-block {
  display: flex;
  flex-direction: column;
  flex: 1;
  justify-content: space-around;
  gap: 12px;
  width: 100%;
  padding: 10px;
  background: var(--surface-color);
  border: 2px solid var(--border-color);
  border-radius: 15px;
  box-shadow: 0 4px 12px var(--shadow-light);
}

.section-row {
  display: flex;
  flex-direction: column;
  width: 100%;
  gap: 12px;
}

.section-block-buttons {
  display: flex;
  flex-direction: row;
  flex: 1;
  justify-content: space-between;
  gap: 12px;
}

.setting-button-wrapper {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.speed-delay-wrapper,
.digit-length-count-repeat-wrapper,
.fullscreen-wrapper,
.language-voice-wrapper,
.thema-wrapper {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 8px;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 10px;
}

.fullscreen-delay-mode-group {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-start;
  gap: 6px;
}

.speed-group,
.interval-group,
.digit-length-group,
.count-group,
.repeat-group,
.fullscreen-switcher-group,
.fullscreen-delay-mode-group,
.fullscreen-delay-group,
.language-group,
.voice-group,
.thema-group {
  align-items: baseline;
  justify-content: space-between;
}

.speed-group,
.interval-group,
.digit-length-group,
.count-group,
.repeat-group,
.fullscreen-switcher-group,
.fullscreen-delay-group {
  display: flex;
  flex-direction: row;
  gap: 12px;
}

.language-group,
.voice-group,
.thema-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.number-area {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  justify-content: center;
  width: 100%;
  padding-top: 6px;
  margin-bottom: 6px;
  gap: 6px;
}

.number-area .column {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.number-input {
  width: 100%;
  max-width: 85px;
  height: 34px;
  margin: 0 auto;
  padding: 2px;
  font-size: 1.4em;
  text-align: center;
  background-color: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-placeholder);
  transition: box-shadow 0.2s, outline 0.2s;
}

.number-input.selected {
  color: var(--text-color);
  outline: 2px solid var(--border-color);
  outline-offset: -1px;
}

.number-input:not(.selected) {
  color: var(--text-placeholder);
}

.number-input.highlight {
  color: var(--primary-active);
  border: 3px solid var(--border-color);
  font-weight: bold;
  background-color: var(--surface-alt-color);
}

.repeat-info-group {
  padding: 8px 8px 0;
  font-weight: 600;
  color: var(--text-muted) 899;
  border-top: 1px solid var(--border-color);
}

.speed-group select,
.interval-group select,
.digit-length-group select,
.count-group select,
.repeat-group select,
.fullscreen-switcher-group select,
.fullscreen-delay-mode-group select,
.fullscreen-delay-group select {
  width: 90px;
}

.language-group select,
.voice-group select,
.thema-group select {
  width: 100%;
  text-align: left;
}

.developer {
  display: flex;
  justify-content: left;
  width: 100%;
  gap: 12px;
  margin-top: 14px;
}

.developer button {
  width: 80px;
  padding: 6px 6px;
  font-size: 0.75em;
  background-color: var(--primary-bg);
  border: 1px solid var(--primary-border);
  border-radius: 8px;
  color: var(--text-color);
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
  box-shadow: 0 2px 6px var(--shadow-light);
}

.developer button:hover {
  background-color: var(--primary-bg);
  border-color: var(--primary-hover);
}

.scroll-bottom-space {
  padding-bottom: 250px;
}

.background-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--surface-alt-color);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 999;
}

.background-overlay.show {
  opacity: 1;
}

.active-number-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20vw;
  font-weight: bold;
  color: var(--text-color);
  background-color: var(--overlay-clear);
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  transform: scale(2);
  transition: opacity 0.15s ease;
}

.active-number-overlay.show {
  opacity: 1;
  transition: opacity 0.5s ease;
}

/* .repeats-text, */
/* .repeat-left, */
.start-pause-btn {
  position: relative;
  z-index: 99999;
}

.help-app-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 99999;
}

.help-app-modal.hidden {
  display: none;
}

.help-app-modal-content {
  width: min(900px, 92vw);
  height: min(90vh, 900px);
  background: var(--background-color);
  color: var(--text-color);
  border-radius: 10px;
  padding: 16px;
  overflow-y: auto;
  position: relative;
  font-size: 16px;
  line-height: 1.6;
  box-shadow: 0 8px 24px var(--shadow-medium);
}

.help-app-close-btn {
  position: absolute;
  top: 8px;
  right: 10px;
  border: none;
  background: transparent;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-color);
}

@media (min-width: 640px) {
  .layout {
    max-width: var(--content-max-md);
    align-items: stretch;
  }

  .section-row {
    flex-direction: row;
    gap: 12px;
  }

  .section-block-exercises {
    flex: 1 1 0%;
  }

  .number-area .column {
    gap: 18px;
  }

  .setting-button-wrapper {
    flex: 1;
    flex-direction: column;
  }

  .setting-button-wrapper .section-block-settings {
    order: 1;
  }

  .setting-button-wrapper .section-block-buttons {
    order: 2;
    margin-top: auto;
  }
}