/* ============================================================
   Weekly Meal Planner — Stylesheet
   Design: clean, minimal, responsive. Mobile-first.
   ============================================================ */

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg:           #f8f7f4;
  --color-surface:      #ffffff;
  --color-border:       #e5e2da;
  --color-text:         #1a1a18;
  --color-text-muted:   #6b6860;
  --color-primary:      #2d6a4f;
  --color-primary-dark: #1b4332;
  --color-primary-light:#d8f3dc;
  --color-accent:       #f4a261;
  --color-error-bg:     #fff0f0;
  --color-error-text:   #c0392b;
  --color-error-border: #f5c6cb;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  18px;

  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.07);
  --shadow-lift: 0 4px 18px rgba(0, 0, 0, 0.10);

  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --max-width: 900px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

ul { list-style: none; }

/* ── Layout ───────────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ── Header ───────────────────────────────────────────────── */
.app-header {
  background: var(--color-primary);
  color: #fff;
  padding: 2rem 1rem;
}

.app-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.app-header__icon {
  font-size: 2.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.app-header__title {
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.app-header__subtitle {
  font-size: 0.95rem;
  opacity: 0.82;
  margin-top: 0.2rem;
}

/* ── Footer ───────────────────────────────────────────────── */
.app-footer {
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
}

/* ── Form Card ────────────────────────────────────────────── */
.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
}

.form-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--color-primary-dark);
}

.form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form__field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form__label {
  font-weight: 600;
  font-size: 0.95rem;
}

.form__hint {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-left: 0.3rem;
}

.form__input {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}

.form__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form__input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* ── Diet Selector (segmented control) ───────────────────── */
.diet-selector {
  display: flex;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  width: fit-content;
}

.diet-selector--disabled {
  opacity: 0.55;
  pointer-events: none;
}

.diet-selector__option {
  display: flex;
  cursor: pointer;
}

.diet-selector__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.diet-selector__label {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-right: 1px solid var(--color-border);
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  user-select: none;
}

.diet-selector__option:last-child .diet-selector__label {
  border-right: none;
}

.diet-selector__label.is-active {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.diet-selector__input:focus-visible + .diet-selector__label {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  align-self: flex-start;
}
.btn--primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-lift);
}
.btn--primary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.btn--secondary {
  background: var(--color-surface);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn--secondary:hover {
  background: var(--color-primary-light);
}

/* Spinner inside the button */
.btn__spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

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

/* ── Loading State ────────────────────────────────────────── */
.loading-state {
  text-align: center;
  padding: 3rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.loading-state__dots {
  display: flex;
  gap: 0.5rem;
}

.loading-state__dots span {
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: bounce 1.2s infinite ease-in-out;
}

.loading-state__dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-state__dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
  40%            { transform: scale(1);   opacity: 1; }
}

.loading-state__text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ── Error Banner ─────────────────────────────────────────── */
.error-banner {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-text);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

/* ── Results ──────────────────────────────────────────────── */
.results {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.results__days {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.results__actions {
  display: flex;
  justify-content: center;
  padding-top: 1rem;
}

/* ── Day Card ─────────────────────────────────────────────── */
.day-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.day-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.9rem 1.25rem;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-bottom: 1px solid var(--color-border);
}

/* ── Meal (single per day) ────────────────────────────────── */
.day-card__meal {
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.meal-card__name {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.3;
}

.meal-card__recipe {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.meal-card__ingredients {
  margin-top: 0.25rem;
}

.meal-card__ingredients-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 0.3rem;
}

.meal-card__ingredients ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.meal-card__ingredients li {
  font-size: 0.78rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  color: var(--color-text-muted);
}

/* ── Shopping List ────────────────────────────────────────── */
.shopping-list {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

.shopping-list__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

/* Category grid — 2 columns on medium+, 1 on small */
.shopping-list__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}

.shopping-list__category {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
}

.shopping-list__category-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.6rem;
}

.shopping-list__category-icon {
  font-size: 1rem;
  line-height: 1;
}

.shopping-list__items {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.shopping-list__item {
  font-size: 0.88rem;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  color: var(--color-text);
}

.shopping-list__bullet {
  color: var(--color-accent);
  font-size: 1rem;
  line-height: 1;
  flex-shrink: 0;
}

/* ── SEO Content Sections ─────────────────────────────────── */
.seo-content {
  width: 100%;
}

.seo-section {
  padding: 3rem 1rem;
  border-top: 1px solid var(--color-border);
}

.seo-section--alt {
  background: var(--color-surface);
}

.seo-section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.seo-section__title {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: -0.02em;
}

.seo-section p {
  color: var(--color-text);
  line-height: 1.75;
  font-size: 0.97rem;
  max-width: 72ch;
}

/* Benefits list */
.seo-benefits {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.seo-benefits__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text);
}

.seo-benefits__icon {
  font-size: 1.4rem;
  line-height: 1.3;
  flex-shrink: 0;
}

/* Steps list */
.seo-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.seo-steps__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text);
}

.seo-steps__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

/* Example table */
.seo-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.seo-table th,
.seo-table td {
  padding: 0.6rem 1rem;
  text-align: left;
  border: 1px solid var(--color-border);
}

.seo-table thead th {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.seo-table tbody tr:nth-child(even) {
  background: var(--color-bg);
}

.seo-table tbody tr:hover {
  background: var(--color-primary-light);
}

/* Tips list */
.seo-tips {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-left: 0;
}

.seo-tips li {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text);
  padding-left: 1.25rem;
  position: relative;
}

.seo-tips li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}