/* === UI KIT – Modern unified design system === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Primary Colors */
  --kt-green:       #3dba7f;
  --kt-green-dark:  #2fa06b;
  --kt-green-light: #e8f8f1;
  --kt-green-soft:  rgba(61, 186, 127, 0.12);
  --kt-orange:      #f59e0b;
  --kt-orange-dark: #d97706;
  --kt-orange-soft: rgba(245, 158, 11, 0.16);

  /* Neutral Colors */
  --kt-text:        #1c1c1c;
  --kt-text-muted:  #6b7280;
  --kt-border:      #c4dfce;
  --kt-bg:          #b7dbc2;
  --kt-white:       #ffffff;
  --kt-surface:     #cfe8d8;
  --kt-surface-strong: #c0decf;

  /* Radius */
  --kt-radius-lg:   16px;
  --kt-radius-md:   12px;
  --kt-radius-sm:   8px;

  /* Shadows */
  --kt-shadow-sm:   0 1px 4px rgba(0, 0, 0, 0.06);
  --kt-shadow:      0 2px 12px rgba(0, 0, 0, 0.08);
  --kt-shadow-md:   0 6px 24px rgba(0, 0, 0, 0.12);
  --kt-shadow-lg:   0 12px 40px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --kt-transition:  0.2s ease;
  --kt-transition-fast: 0.15s ease;

  /* Spacing */
  --kt-gap-sm:      0.5rem;
  --kt-gap:         1rem;
  --kt-gap-md:      1.5rem;
  --kt-gap-lg:      2rem;

  /* Legacy vars (for compatibility) */
  --bg-light:       var(--kt-bg);
  --card-light:     var(--kt-white);
  --text-light:     var(--kt-text);
  --text-muted-light: var(--kt-text-muted);
  --bg-dark:        var(--kt-bg);
  --card-dark:      var(--kt-white);
  --text-dark:      var(--kt-text);
  --text-muted-dark: var(--kt-text-muted);
  --accent:         var(--kt-green);
  --accent-soft:    var(--kt-green-soft);
  --accent-glow:    0 2px 8px rgba(61, 186, 127, 0.35);
  --accent-warm:    var(--kt-orange);
  --accent-warm-soft: var(--kt-orange-soft);
  --radius-lg:      var(--kt-radius-lg);
  --radius-md:      var(--kt-radius-md);
  --shadow-soft:    var(--kt-shadow-md);
  --transition:     var(--kt-transition);
}

/* === Global === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: #a9d0b6;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(155deg, #9fcfb0 0%, #b4dbc1 44%, #c8e8d1 100%) !important;
  background-attachment: fixed;
  color: var(--kt-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  isolation: isolate;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(circle at 12% 18%, rgba(74, 150, 105, 0.24) 0%, rgba(74, 150, 105, 0) 40%),
    radial-gradient(circle at 88% 14%, rgba(58, 130, 92, 0.18) 0%, rgba(58, 130, 92, 0) 36%),
    radial-gradient(circle at 72% 82%, rgba(90, 165, 120, 0.2) 0%, rgba(90, 165, 120, 0) 40%);
}

.app-top-nav {
  width: 100%;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 0.5rem var(--kt-gap);
  background: rgba(255, 255, 255, 0.5);
  border-bottom: 1px solid var(--kt-border);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.app-top-nav a {
  text-decoration: none;
  color: var(--kt-green-dark);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(47, 160, 107, 0.2);
}

.app-top-nav a:hover {
  background: var(--kt-green-soft);
  color: var(--kt-green-dark);
  text-decoration: none;
}

img,
svg,
canvas,
video {
  max-width: 100%;
  height: auto;
}

/* Hide theme toggle across all pages */
#themeToggle,
.theme-toggle,
button[id*="theme"] {
  display: none !important;
}

/* === Header === */
header {
  background: var(--kt-white);
  border-bottom: 2px solid var(--kt-green);
  box-shadow: 0 2px 12px rgba(61, 186, 127, 0.12);
  padding: 0 var(--kt-gap-lg);
  height: 64px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

header h1 {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--kt-text);
  margin: 0;
}

header h1 .logo,
header h1 img {
  width: 32px;
  height: 32px;
}

header h1 i {
  color: var(--kt-green);
}

/* === Step Chip === */
.step-chip {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  background: var(--kt-green-light);
  color: var(--kt-green-dark);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0;
  border: none;
  text-transform: none;
}

/* === Main === */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding: var(--kt-gap-lg) var(--kt-gap);
  width: 100%;
}

/* === Section / Card Container === */
.section,
.card {
  background: var(--kt-surface);
  border: 1px solid var(--kt-border);
  border-radius: var(--kt-radius-lg);
  box-shadow: var(--kt-shadow-md);
  padding: var(--kt-gap-lg);
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

.section h2,
.card h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--kt-text);
  margin-bottom: var(--kt-gap-md);
  letter-spacing: -0.01em;
}

/* Stronger green surfaces across page-level cards/wrappers. */
.container,
.toolbar-card,
#calendar-container,
.overview-card,
.meals-card,
.meal-panel,
.result-item,
.summary-strip > div,
.input-item,
.totals-bar,
.result-details-box,
.dropdown {
  background: var(--kt-surface) !important;
}

/* === Buttons === */
.btn,
button,
input[type="button"],
input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--kt-radius-sm);
  background: var(--kt-green);
  border: none;
  color: var(--kt-white);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--kt-transition), box-shadow var(--kt-transition), transform var(--kt-transition);
  box-shadow: var(--accent-glow);
  text-decoration: none;
}

.btn:hover,
button:hover,
input[type="button"]:hover,
input[type="submit"]:hover {
  background: var(--kt-green-dark);
  box-shadow: 0 4px 16px rgba(61, 186, 127, 0.45);
  transform: translateY(-1px);
}

.btn:active,
button:active,
input[type="button"]:active,
input[type="submit"]:active {
  transform: scale(0.97);
}

/* Secondary button variant */
.btn.btn-secondary,
button.btn-secondary,
button.secondary {
  background: var(--kt-white);
  color: var(--kt-text-muted);
  border: 1px solid var(--kt-border);
  box-shadow: none;
}

.btn.btn-secondary:hover,
button.btn-secondary:hover,
button.secondary:hover {
  background: var(--kt-bg);
  border-color: #d1d5db;
  transform: translateY(-1px);
}

/* === Inputs === */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="range"],
textarea,
select {
  font-family: inherit;
  font-size: 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--kt-border);
  border-radius: var(--kt-radius-sm);
  background: var(--kt-white);
  color: var(--kt-text);
  transition: border-color var(--kt-transition), box-shadow var(--kt-transition);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--kt-green);
  box-shadow: 0 0 0 3px rgba(61, 186, 127, 0.1);
}

input[type="range"] {
  padding: 0;
  accent-color: var(--kt-green);
}

/* === Labels === */
label {
  display: block;
  font-weight: 500;
  color: var(--kt-text);
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

/* === Form Groups === */
.form-group,
.input-group {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--kt-gap-md);
}

/* === Lists === */
ul, ol {
  margin: var(--kt-gap) 0;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

/* === Links === */
a {
  color: var(--kt-green-dark);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--kt-transition);
}

a:hover {
  color: var(--kt-green);
  text-decoration: underline;
}

/* === Footer === */
footer {
  background: var(--kt-white);
  border-top: 2px solid var(--kt-green);
  text-align: center;
  padding: var(--kt-gap-md);
  font-size: 0.85rem;
  color: var(--kt-text-muted);
  margin-top: auto;
}

footer a {
  color: var(--kt-green-dark);
  font-weight: 500;
}

footer a:hover {
  color: var(--kt-green);
}

/* === Warm Accent Controls (plus/minus/add-ons) === */
.plus-button,
.result-item-buttons button,
.dropdown-input button,
.food-item-container button,
.btn-add,
.add-food-link {
  background: var(--kt-orange);
  color: var(--kt-white);
  border-color: transparent;
  box-shadow: 0 2px 10px rgba(245, 158, 11, 0.28);
}

.plus-button:hover,
.result-item-buttons button:hover,
.dropdown-input button:hover,
.food-item-container button:hover,
.btn-add:hover,
.add-food-link:hover {
  background: var(--kt-orange-dark);
  color: var(--kt-white);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.38);
}

/* === 3D Card (flattened for minimal design) === */
.card-3d {
  transform-style: flat;
  transition: box-shadow var(--kt-transition);
}

.card-3d:hover {
  transform: none;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.13);
}

/* === Utilities === */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--kt-text-muted);
}

.text-success {
  color: var(--kt-green);
}

.gap-sm {
  gap: var(--kt-gap-sm);
}

.gap-md {
  gap: var(--kt-gap-md);
}

/* === Responsive === */
@media (max-width: 768px) {
  header {
    padding: 0 var(--kt-gap);
  }

  main {
    padding: var(--kt-gap-md) var(--kt-gap-sm);
  }

  .section,
  .card {
    padding: var(--kt-gap-md);
    border-radius: var(--kt-radius-md);
  }

  .container,
  .wrapper,
  .content,
  .page,
  .panel {
    width: 100%;
    max-width: 100%;
  }

  .container,
  .section,
  .card {
    margin-left: auto;
    margin-right: auto;
  }

  table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
  }

  .btn,
  button {
    width: 100%;
    max-width: 240px;
  }

  .section h2,
  .card h2 {
    font-size: 1.15rem;
  }
}

@media (max-width: 480px) {
  main {
    padding-left: var(--kt-gap-sm);
    padding-right: var(--kt-gap-sm);
  }

  header {
    height: 56px;
    padding: 0 var(--kt-gap-sm);
  }

  header h1 {
    font-size: 1rem;
  }

  .section,
  .card {
    padding: var(--kt-gap);
    border-radius: var(--kt-radius-sm);
  }

  .btn,
  button {
    padding: 0.65rem 1.5rem;
    font-size: 0.9rem;
  }
}