/* ==========================================================================
   STEALTH LUXURY DESIGN - VARIABLE PALETTE
   ========================================================================== */
:root {
  /* System font family with high legibility */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Fredoka', var(--font-sans);

  /* Color presets */
  --accent-neon-green: #9fe870; /* Lush bright luxury chartreuse */
  --accent-dark-green: #163300; /* Deep rich forest green */

  /* Default theme behavior (Dark setup) */
  --bg-app: #121212;
  --bg-card: #1e1e1e;
  --bg-inner: #141414;
  --bg-button: #1e1e20;
  --bg-button-hover: #2c2c2e;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-thin: rgba(255, 255, 255, 0.05);
  
  --text-primary: #f5f5f5;
  --text-secondary: #a2a3a5;
  --text-dimmed: #727477;
  --accent: var(--accent-neon-green);
  --badge-bg: rgba(159, 232, 112, 0.1);
  --badge-text: var(--accent-neon-green);
  --shadow-main: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-soft: 0 2px 10px rgba(0, 0, 0, 0.15);
  --active-glow-color: rgba(159, 232, 112, 0.03);
}

/* Light theme values overwrite standard roots */
html[data-theme="light"] {
  --bg-app: #f5f6f3;
  --bg-card: #ffffff;
  --bg-inner: #fafaf8;
  --bg-button: #e9eae6;
  --bg-button-hover: #dde0da;
  --border-color: rgba(0, 0, 0, 0.06);
  --border-color-thin: rgba(0, 0, 0, 0.04);
  
  --text-primary: #1a2415;
  --text-secondary: #606f59;
  --text-dimmed: #819179;
  --accent: var(--accent-dark-green);
  --badge-bg: var(--bg-button);
  --badge-text: var(--accent-dark-green);
  --shadow-main: 0 4px 18px rgba(22, 51, 0, 0.06);
  --shadow-soft: 0 2px 8px rgba(22, 51, 0, 0.04);
  --active-glow-color: rgba(22, 51, 0, 0.01);
}

/* Base resets & scroll control styling */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
}

body {
  background-color: var(--bg-app);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background-color 0.3s ease, color 0.3s ease;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Scroll Indicators */
.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background-color: var(--accent);
  width: 0%;
  z-index: 999;
  transition: width 0.1s linear;
}

/* Layout container centering */
.app-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem 1.5rem;
}

/* Header section - Luxury brand logo + Controls side-by-side */
.app-header {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  border-b: 1px solid var(--border-color);
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

@media (min-width: 550px) {
  .app-header {
    flex-direction: row;
    align-items: center;
  }
}

.header-logo-section {
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
}

/* Sakrij plavi fokus okvir oko dugmadi/klikabilnih elemenata pri kliku.
   (Hide the blue focus outline that appears around buttons on click.) */
button:focus,
button:focus-visible,
.header-logo-section:focus,
.header-logo-section:focus-visible,
[role="button"]:focus,
[role="button"]:focus-visible {
  outline: none;
  box-shadow: none;
}

/* Ukloni i plavi/sivi tap highlight na mobilnim uređajima. */
button,
a,
.header-logo-section,
[role="button"] {
  -webkit-tap-highlight-color: transparent;
}

.logo-leaf {
  width: 3rem;
  height: 3rem;
  border-radius: 0.75rem;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  transition: transform 0.5s ease;
}

.logo-leaf:hover {
  transform: rotate(-10deg);
}

.logo-text h1 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.logo-text p {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 0.15rem;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
}

/* Control elements: buttons with smooth hover scaling */
.control-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-button);
  color: var(--text-primary);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.15s ease;
}

.control-btn:hover {
  background-color: var(--bg-button-hover);
}

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

/* Once the header has room (~550px+), place the theme/language controls
   back on the right of the header, next to the title, at natural pill size.
   Placed after the base rules so these overrides win by source order. */
@media (min-width: 550px) {
  .header-controls {
    width: auto;
  }
  .control-btn {
    flex: 0 0 auto;
  }
}

/* Search bar styling with internal absolute glass icons */
.controls-bar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .controls-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
  }
}

.search-wrapper {
  position: relative;
  flex: 1;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dimmed);
  pointer-events: none;
}

#searchInput {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-inner);
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#searchInput:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.clear-search-btn {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-dimmed);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
}

.clear-search-btn:hover {
  color: var(--text-primary);
}

/* Bulk toggle buttons */
.bulk-actions {
  display: flex;
  gap: 0.5rem;
  width: 100%;
}

.bulk-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.bulk-btn:hover {
  border-color: var(--accent);
}

/* Accordion categories layout structure */
.accordion-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 4rem;
}

.root-category-block {
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  background-color: var(--bg-card);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.root-category-block.active-glow {
  border-color: rgba(159, 232, 112, 0.2);
  box-shadow: var(--shadow-main);
  background-color: var(--active-glow-color);
}

.category-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  color: var(--text-primary);
}

.category-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.leaf-icon-small {
  color: var(--accent);
}

.category-title h2 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.plant-count-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  margin-left: 0.25rem;
}

/* Category panel content expansion wrapper */
.category-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.root-category-block:has(.category-trigger.expanded) .category-content {
  max-height: 10000px;
  border-top: 1px solid var(--border-color);
}

.category-content-inner {
  padding: 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Group Subtitles inside Accordion */
.group-heading-title {
  margin-top: 0.5rem;
  margin-bottom: 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  padding-left: 0.5rem;
  border-left: 2px solid var(--accent);
}
.group-list-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-left: 0.25rem;
}

/* Individual Plant Item styling with delicate borders */
.plant-card-item {
  border: 1px solid var(--border-color-thin);
  border-radius: 0.75rem;
  background-color: var(--bg-inner);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.plant-card-item:hover {
  border-color: rgba(114, 116, 119, 0.4);
}

.plant-card-item.expanded-card {
  border-color: rgba(159, 232, 112, 0.2);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.plant-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  color: var(--text-primary);
}

.plant-heading-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.plant-group-letter {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 0.35rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-button);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
}

.plant-names {
  display: flex;
  flex-direction: column;
}

.plant-common-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.plant-scientific-name {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-top: 0.1rem;
}

.right-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hybrid-tag {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: rgba(16, 185, 129, 0.1);
  color: #34d399;
  padding: 0.15rem 0.5rem;
  border-radius: 0.25rem;
}

/* Chevron icons rotations on panel activation */
.chevron-icon {
  color: var(--text-dimmed);
  transition: transform 0.2s ease;
}

.category-trigger.expanded .chevron-icon,
.plant-trigger.expanded .chevron-icon {
  transform: rotate(180deg);
}

.plant-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.plant-card-item.expanded-card .plant-content {
  max-height: 1000px;
  border-top: 1px solid var(--border-color-thin);
}

.plant-content-inner {
  padding: 1rem;
}

/* Detailed descriptive plant box layout inside accordion */
.detailed-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .detailed-panel {
    flex-direction: row-reverse;
    align-items: start;
    gap: 1.5rem;
  }
}

.plant-details-image-container {
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: 0.5rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 640px) {
  .plant-details-image-container {
    width: 240px;
    height: 150px;
    flex-shrink: 0;
  }
}

.plant-detail-pic {
  width: 100%;
  height: 100%;
  object-cover: cover;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.plant-detail-pic:hover {
  transform: scale(1.05);
}

.plant-info-block {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.hybrid-box-alert {
  background-color: rgba(159, 232, 112, 0.04);
  border-left: 2px solid var(--accent);
  padding: 0.5rem 0.75rem;
  border-radius: 0 0.5rem 0.5rem 0;
  font-size: 0.75rem;
}

.hybrid-box-alert strong {
  display: block;
  font-weight: 500;
  margin-bottom: 0.15rem;
}

.hybrid-box-alert span {
  font-style: italic;
  font-family: monospace;
  color: var(--text-secondary);
}

.plant-bio-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
  text-align: justify;
}

.plant-scientific-row {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.plant-scientific-row span {
  font-family: monospace;
  font-style: italic;
  color: var(--text-primary);
  font-weight: 500;
  margin-left: 0.25rem;
}

/* Care Guidelines Grid */
.care-tips-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
}
body.light-theme .care-tips-grid {
  border-top: 1px dashed rgba(0, 0, 0, 0.06);
}
@media (min-width: 640px) {
  .care-tips-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.care-tip-item {
  display: flex;
  flex-direction: column;
  font-size: 0.75rem;
}
.care-tip-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}
.care-tip-desc {
  color: var(--text-secondary);
  line-height: 1.4;
}

.plant-ext-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 600;
  align-self: flex-start;
  margin-top: 0.25rem;
}

.plant-ext-link:hover {
  text-decoration: underline;
}

/* Search negative results wrapper */
.no-results {
  text-align: center;
  padding: 4rem 2rem;
  border: 2px dashed var(--border-color);
  border-radius: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.no-results p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.reset-search-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
  background-color: var(--badge-bg);
  color: var(--badge-text);
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.reset-search-btn:hover {
  opacity: 0.9;
}

/* Footer section */
.app-footer {
  text-align: center;
  margin-top: 4rem;
  padding-top: 2rem;
  font-size: 0.7rem;
  color: var(--text-dimmed);
}

   /*DODATO: NAZAD NA VRH DUGME (BACK TO TOP)*/
.back-to-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background-color: var(--bg-button);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 990;
  opacity: 0;
  pointer-events: none;
  transform: translateY(1rem);
  box-shadow: var(--shadow-main);
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
              transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
              background-color 0.2s ease, 
              color 0.2s ease,
              border-color 0.2s ease;
}

.back-to-top-btn.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  background-color: var(--bg-button-hover);
  border-color: var(--accent);
  color: var(--accent);
}

.back-to-top-btn:active {
  transform: scale(0.95);
}

@media (max-width: 640px) {
  .back-to-top-btn {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 2.5rem;
    height: 2.5rem;
  }
}