/* Akvilon — стили веб-интерфейса с инфографикой */

:root {
  --color-bg: #0f1419;
  --color-surface: #1a2332;
  --color-surface-alt: #243044;
  --color-border: #2d3d52;
  --color-text: #e6edf3;
  --color-text-muted: #8b9eb0;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-success: #22c55e;
  --color-warning: #eab308;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Consolas', 'Monaco', monospace;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  --transition: 0.2s ease;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

/* Header */
.header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 1.5rem;
}
.header__inner {
  max-width: 960px;
  margin: 0 auto;
}
.header__title {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.header__subtitle {
  margin: 0.35rem 0 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Main */
.main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
}

.section {
  margin-bottom: 2rem;
}
.section__title {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}

/* Form */
.form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.form__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.form__group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.form__group--infographic::before {
  content: '';
  width: 24px;
  height: 24px;
  background: var(--color-surface-alt);
  border-radius: 6px;
  margin-bottom: 0.25rem;
}
.form__group[data-infographic="room"]::before { background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b9eb0' stroke-width='2'%3E%3Crect x='3' y='3' width='18' height='18' rx='1'/%3E%3Cpath d='M3 9h18M9 3v18'/%3E%3C/svg%3E") center/contain no-repeat; }
.form__group[data-infographic="heat"]::before { background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b9eb0' stroke-width='2'%3E%3Cpath d='M12 2v4M12 18v4M4.93 4.93l2.83 2.83M16.24 16.24l2.83 2.83M2 12h4M18 12h4M4.93 19.07l2.83-2.83M16.24 7.76l2.83-2.83'/%3E%3Ccircle cx='12' cy='12' r='4'/%3E%3C/svg%3E") center/contain no-repeat; }
.form__group[data-infographic="temp"]::before { background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b9eb0' stroke-width='2'%3E%3Cpath d='M14 14.76V20h4v-5.24'/%3E%3Cpath d='M10 4v12.5a4 4 0 1 0 4 0V4'/%3E%3C/svg%3E") center/contain no-repeat; }
.form__group[data-infographic="humidity"]::before { background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b9eb0' stroke-width='2'%3E%3Cpath d='M12 2.5v3M12 18.5v3'/%3E%3Cpath d='M7 7c0 2.5 2.5 5 5 5s5-2.5 5-5'/%3E%3Ccircle cx='12' cy='21' r='1' fill='%238b9eb0'/%3E%3C/svg%3E") center/contain no-repeat; }
.form__label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.form__input {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition);
}
.form__input:focus {
  outline: none;
  border-color: var(--color-accent);
}
.form__input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.8;
}
.form__input--full { width: 100%; }
.form__row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.form__row .form__input { flex: 1; }
.form__sep {
  color: var(--color-text-muted);
  font-weight: 600;
}
.form__select {
  cursor: pointer;
  appearance: auto;
}
.form__group[data-infographic="city"]::before {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b9eb0' stroke-width='2'%3E%3Cpath d='M12 2L2 7l10 5 10-5-10-5z'/%3E%3Cpath d='M2 17l10 5 10-5'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* Tabs Зима / Лето */
.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.25rem;
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 4px;
  border: 1px solid var(--color-border);
  width: fit-content;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}
.tab {
  padding: 0.5rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: color var(--transition), background var(--transition), border-color var(--transition);
}
.tab:hover {
  color: var(--color-text);
  border-color: var(--color-border);
}
.tab--active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.tab--active:hover {
  color: #fff;
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.mode-badge {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.mode-badge--heating {
  background: rgba(234, 179, 8, 0.2);
  color: var(--color-warning);
}
.mode-badge--cooling {
  background: rgba(59, 130, 246, 0.2);
  color: var(--color-accent);
}
.value-card--heating {
  border-color: var(--color-warning);
  background: rgba(234, 179, 8, 0.06);
}

.btn {
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition), transform 0.1s;
}
.btn--primary {
  background: var(--color-accent);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-accent-hover);
}
.btn:active { transform: scale(0.98); }

/* Results section */
.section--results[aria-hidden="true"] {
  display: none;
}
.section--results[aria-hidden="false"] {
  display: block;
}

/* Summary block */
.summary-block {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}
.summary-block__content {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}
.summary-block__reserve {
  font-weight: 600;
  margin-bottom: 1rem;
}
.summary-block__reserve--ok {
  color: var(--color-success);
}
.summary-block__reserve--low {
  color: var(--color-warning);
}
.summary-block__reserve--fail {
  color: #ef4444;
}
.summary-block__actions {
  margin-top: 0.5rem;
}
.btn--secondary {
  background: var(--color-surface-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--secondary:hover {
  background: var(--color-border);
  color: var(--color-text);
}
.value-card--reserve {
  min-width: 140px;
}
.value-card__hint {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* Scheme toolbar */
.scheme-toolbar {
  margin-bottom: 0.75rem;
}
.scheme-toolbar__label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  cursor: pointer;
}
.scheme-toolbar__label input {
  cursor: pointer;
}

/* Photo upload */
.photo-upload-block {
  margin-top: 0.5rem;
}
.photo-upload__input {
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
  color: var(--color-text);
}
.photo-upload__preview {
  position: relative;
  min-height: 200px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.photo-upload__preview canvas {
  display: block;
  max-width: 100%;
  height: auto;
}
.photo-upload__placeholder {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}
.photo-upload__preview:not(.photo-upload__preview--has-image) canvas {
  display: none;
}
.photo-upload__preview--has-image .photo-upload__placeholder {
  display: none;
}

/* Infographic blocks */
.infographic {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
@media (max-width: 640px) {
  .infographic {
    grid-template-columns: 1fr;
  }
}
.infographic__icon {
  width: 56px;
  height: 42px;
  color: var(--color-accent);
  flex-shrink: 0;
}
.infographic__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}
.infographic__title {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}
.infographic__subtitle {
  margin: 1rem 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-muted);
}
.infographic__table-wrap {
  margin-top: 0.75rem;
  overflow-x: auto;
  max-height: 200px;
  overflow-y: auto;
}
.infographic-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}
.infographic-table th,
.infographic-table td {
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--color-border);
  text-align: left;
}
.infographic-table th {
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
  font-weight: 600;
}
.infographic-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}
.infographic__values {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.infographic__hint,
.infographic__placeholder {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  max-width: 52ch;
}
.infographic__hint--warning {
  color: var(--color-warning);
}
.scheme-block__title {
  margin-top: 1.25rem;
}
.scheme-block__title:first-child {
  margin-top: 0;
}
.scheme-block__desc {
  margin: 0 0 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.scheme-container {
  margin: 0.75rem 0;
  min-height: 140px;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface-alt) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  padding: 1rem;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.15);
}
.scheme-container--layout {
  min-height: 200px;
  padding: 1.25rem;
}
.scheme-container--hydraulic,
.scheme-container--mounting {
  padding: 1.25rem;
}
.scheme-container svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}
.infographic--scheme-visual .infographic__content {
  max-width: 100%;
}

.value-card {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  min-width: 120px;
}
.value-card--highlight {
  border-color: var(--color-accent);
  background: rgba(59, 130, 246, 0.08);
}
.value-card__num {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
}
.value-card__unit {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-left: 0.25rem;
}
.value-card__label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}
.value-card__label--list {
  margin-top: 0;
  font-size: 0.9rem;
}

/* Footer */
.footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem 1.5rem 2rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.footer a {
  color: var(--color-accent);
  text-decoration: none;
}
.footer a:hover {
  text-decoration: underline;
}