/**
 * PratiPaket - Moderni UI & Dark/Light Mode stilovi (Bootstrap 5.3 + Modern Web Guidance)
 */

:root {
  /* MANDATORY: Automatsko prilagođavanje nativnog UI-a pretraživača (scrollbars, form kontrole) */
  color-scheme: light dark;

  /* Brand kolorit za svetlu i tamnu temu */
  --brand-primary-light: #2563eb;
  --brand-primary-dark: #60a5fa;
  --brand-accent-light: #4f46e5;
  --brand-accent-dark: #818cf8;

  --surface-bg-light: #f8fafc;
  --surface-bg-dark: #0b1120;
  --card-bg-light: #ffffff;
  --card-bg-dark: #151f32;
  --card-border-light: rgba(15, 23, 42, 0.08);
  --card-border-dark: rgba(255, 255, 255, 0.09);
  --text-main-light: #0f172a;
  --text-main-dark: #f1f5f9;
  --text-muted-light: #64748b;
  --text-muted-dark: #94a3b8;

  /* Podrazumevane vrednosti (Light fallback) */
  --pp-primary: var(--brand-primary-light);
  --pp-accent: var(--brand-accent-light);
  --pp-surface: var(--surface-bg-light);
  --pp-card-bg: var(--card-bg-light);
  --pp-card-border: var(--card-border-light);
  --pp-text: var(--text-main-light);
  --pp-text-muted: var(--text-muted-light);
  --pp-hero-gradient: linear-gradient(135deg, #0f172a 0%, #1e3a8a 55%, #312e81 100%);

  /* Fallback za starije pretraživače bez light-dark() podrške */
  @media (prefers-color-scheme: dark) {
    --pp-primary: var(--brand-primary-dark);
    --pp-accent: var(--brand-accent-dark);
    --pp-surface: var(--surface-bg-dark);
    --pp-card-bg: var(--card-bg-dark);
    --pp-card-border: var(--card-border-dark);
    --pp-text: var(--text-main-dark);
    --pp-text-muted: var(--text-muted-dark);
  }

  /* Moderni CSS light-dark() kada je podržan */
  @supports (color: light-dark(white, black)) {
    --pp-primary: light-dark(var(--brand-primary-light), var(--brand-primary-dark));
    --pp-accent: light-dark(var(--brand-accent-light), var(--brand-accent-dark));
    --pp-surface: light-dark(var(--surface-bg-light), var(--surface-bg-dark));
    --pp-card-bg: light-dark(var(--card-bg-light), var(--card-bg-dark));
    --pp-card-border: light-dark(var(--card-border-light), var(--card-border-dark));
    --pp-text: light-dark(var(--text-main-light), var(--text-main-dark));
    --pp-text-muted: light-dark(var(--text-muted-light), var(--text-muted-dark));
  }

  accent-color: var(--pp-primary);
}

/* Eksplicitni prekidaci teme (Bootstrap 5.3 data-bs-theme) */
html[data-bs-theme="light"] {
  color-scheme: light;
  --pp-primary: var(--brand-primary-light);
  --pp-accent: var(--brand-accent-light);
  --pp-surface: var(--surface-bg-light);
  --pp-card-bg: var(--card-bg-light);
  --pp-card-border: var(--card-border-light);
  --pp-text: var(--text-main-light);
  --pp-text-muted: var(--text-muted-light);
}

html[data-bs-theme="dark"] {
  color-scheme: dark;
  --pp-primary: var(--brand-primary-dark);
  --pp-accent: var(--brand-accent-dark);
  --pp-surface: var(--surface-bg-dark);
  --pp-card-bg: var(--card-bg-dark);
  --pp-card-border: var(--card-border-dark);
  --pp-text: var(--text-main-dark);
  --pp-text-muted: var(--text-muted-dark);
}

body {
  background-color: var(--pp-surface);
  color: var(--pp-text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* Global Announcement Banner */
.global-banner {
  background: linear-gradient(90deg, #2563eb, #4f46e5, #7c3aed);
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 500;
}

/* Navbar */
.navbar-glass {
  background-color: var(--pp-card-bg);
  border-bottom: 1px solid var(--pp-card-border);
  backdrop-filter: blur(12px);
}

.brand-logo-badge {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: linear-gradient(135deg, #2563eb, #4f46e5);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.32);
}

/* Hero sekcija i glavni pretraživač */
.hero-section {
  background: var(--pp-hero-gradient);
  color: #ffffff;
  padding: 4.25rem 0 4.75rem;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.28), transparent 45%),
              radial-gradient(circle at 20% 80%, rgba(56, 189, 248, 0.2), transparent 45%);
  pointer-events: none;
}

.tracking-search-card {
  background-color: var(--pp-card-bg);
  color: var(--pp-text);
  border-radius: 1.25rem;
  border: 1px solid var(--pp-card-border);
  box-shadow: 0 22px 50px rgba(2, 6, 23, 0.35);
  padding: 1.5rem;
}

.tracking-input-lg {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.9rem 1.15rem;
  border-radius: 0.85rem;
}

.tracking-input-lg::placeholder {
  font-weight: 400;
  letter-spacing: normal;
}

/* Smart Auto-Detect pilula */
.detect-badge {
  transition: all 0.2s ease;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.4em 0.9em;
}

/* Steppers (Preuzeto -> U tranzitu -> Na dostavi -> Uručeno) */
.stepper-wrapper {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  position: relative;
  margin: 1.75rem 0;
}

.stepper-item {
  text-align: center;
  position: relative;
  padding: 1rem 0.5rem;
  border-radius: 0.9rem;
  background-color: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--pp-card-border);
  transition: all 0.25s ease;
}

.stepper-item .step-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  margin: 0 auto 0.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background-color: rgba(148, 163, 184, 0.2);
  color: var(--pp-text-muted);
  transition: all 0.25s ease;
}

.stepper-item.completed {
  border-color: rgba(16, 185, 129, 0.35);
  background-color: rgba(16, 185, 129, 0.07);
}

.stepper-item.completed .step-icon {
  background-color: #10b981;
  color: #ffffff;
}

.stepper-item.active {
  border-color: #2563eb;
  background-color: rgba(37, 99, 235, 0.11);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.16);
}

.stepper-item.active .step-icon {
  background-color: #2563eb;
  color: #ffffff;
  box-shadow: 0 0 0 5px rgba(37, 99, 235, 0.2);
}

/* Vertikalna hronološka vremenska linija (Timeline) */
.timeline-vertical {
  position: relative;
  padding-left: 2.25rem;
  margin-top: 1rem;
}

.timeline-vertical::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  bottom: 0.5rem;
  left: 0.75rem;
  width: 2px;
  background: linear-gradient(180deg, #2563eb 0%, rgba(148, 163, 184, 0.35) 100%);
}

.timeline-node {
  position: relative;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  border-radius: 0.85rem;
  background-color: var(--pp-card-bg);
  border: 1px solid var(--pp-card-border);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.timeline-node:hover {
  transform: translateX(3px);
}

.timeline-node::before {
  content: "";
  position: absolute;
  left: -1.87rem;
  top: 1.35rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: #94a3b8;
  border: 3px solid var(--pp-card-bg);
  box-shadow: 0 0 0 2px rgba(148, 163, 184, 0.4);
}

.timeline-node.latest-node {
  border-left: 4px solid #2563eb;
  background-color: rgba(37, 99, 235, 0.04);
}

.timeline-node.latest-node::before {
  background-color: #2563eb;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.25);
}

/* Kartice i kurirski bedževi */
.pp-card {
  background-color: var(--pp-card-bg);
  border: 1px solid var(--pp-card-border);
  border-radius: 1rem;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
}

.courier-pill {
  cursor: pointer;
  user-select: none;
  padding: 0.45rem 0.85rem;
  border-radius: 0.75rem;
  border: 1px solid var(--pp-card-border);
  background-color: var(--pp-card-bg);
  color: var(--pp-text);
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.18s ease;
}

.courier-pill:hover {
  border-color: var(--pp-primary);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.12);
}

.courier-logo-img {
  width: 100%;
  max-width: 175px;
  height: 58px;
  object-fit: contain;
  background-color: #ffffff;
  padding: 6px 12px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  margin: 0 auto 0.65rem;
  display: block;
}

/* Admin Sidebar & Stat Cards */
.admin-stat-card {
  background-color: var(--pp-card-bg);
  border: 1px solid var(--pp-card-border);
  border-radius: 1rem;
  padding: 1.25rem;
}

.code-editor-textarea {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.84rem;
}

/* Štampa / PDF izvoz */
@media print {
  .no-print,
  nav,
  footer,
  .hero-section,
  #savedPackagesSection,
  #supportedCouriersSection {
    display: none !important;
  }

  #trackingResultSection {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .pp-card,
  .timeline-node {
    box-shadow: none !important;
    border: 1px solid #cbd5e1 !important;
    break-inside: avoid;
  }
}

/* Mobilna responzivnost za Steppers */
@media (max-width: 767.98px) {
  .hero-section {
    padding: 2.5rem 0 3rem;
  }

  .stepper-wrapper {
    grid-template-columns: repeat(2, 1fr);
  }
}