/* ============================================================
   Kytka do školy — v1 Mint / Čistý
   Font: Plus Jakarta Sans
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ── Design tokens ── */
:root {
  --color-primary:       #3DBE7A;
  --color-primary-dark:  #2EA068;
  --color-primary-light: #D1F5E3;
  --color-accent:        #FF8C42;
  --color-text:          #1A2E1F;
  --color-text-muted:    #5F7A68;
  --color-bg:            #FFFFFF;
  --color-bg-alt:        #F0FBF5;
  --color-bg-dark:       #1A2E1F;
  --color-border:        #D4EDE0;
  --color-sidebar:       #FFFFFF;
  --color-sidebar-border:#D4EDE0;

  --font-sans: 'Plus Jakarta Sans', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --sidebar-width: 260px;
  --transition: 0.2s ease;
}

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-width: 1440px;
  display: flex;
  min-height: 100vh;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ── Layout ── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-sidebar);
  border-right: 1px solid var(--color-sidebar-border);
  display: flex;
  flex-direction: column;
  padding: 2rem 1.5rem;
  z-index: 100;
  overflow-y: auto;
}

.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
}

/* ── Sidebar brand ── */
.sidebar-brand {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 2.5rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.sidebar-brand span {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
  letter-spacing: 0;
}

/* ── Sidebar nav ── */
.sidebar-nav {
  flex: 1;
}

.sidebar-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background var(--transition), color var(--transition);
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.sidebar-nav a .nav-icon {
  font-size: 1.1rem;
  width: 1.2rem;
  text-align: center;
  flex-shrink: 0;
}

/* ── Sidebar CTA ── */
.sidebar-cta {
  margin-top: 1.5rem;
  display: block;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  text-align: center;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  transition: background var(--transition);
  letter-spacing: 0.01em;
}

.sidebar-cta:hover {
  background: var(--color-primary-dark);
}

/* ── Sidebar back link ── */
.sidebar-back {
  margin-top: 2rem;
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
}

.sidebar-back:hover {
  color: var(--color-primary);
}

/* ── Section base ── */
section {
  padding: 5rem 3.5rem;
}

section:nth-child(even) {
  background: var(--color-bg-alt);
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 520px;
  line-height: 1.7;
}

/* ── Hero ── */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 5rem 3.5rem;
  gap: 3rem;
  background: var(--color-bg);
}

.hero-text {
  flex: 1;
  max-width: 560px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.hero-heading {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.hero-heading .accent {
  color: var(--color-primary);
}

.hero-perex {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 2rem;
  max-width: 460px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  transition: background var(--transition), transform var(--transition);
  display: inline-block;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  transition: border-color var(--transition), color var(--transition);
  display: inline-block;
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.hero-stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
  letter-spacing: -0.02em;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}

.hero-visual {
  flex: 0 0 480px;
  height: 520px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.hero-visual-emoji {
  font-size: 5rem;
  line-height: 1;
}

.hero-visual-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.hero-visual-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
}

.hero-visual-badge2 {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hero-visual-badge2 .b2-emoji { font-size: 1.4rem; }
.hero-visual-badge2 .b2-text { font-size: 0.75rem; font-weight: 600; line-height: 1.3; }
.hero-visual-badge2 .b2-sub { font-size: 0.7rem; color: var(--color-text-muted); font-weight: 400; }

/* ── How it works ── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.step-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
}

.step-number {
  width: 2.5rem;
  height: 2.5rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--color-text);
}

.step-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ── Plant cards ── */
.plants-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2.5rem;
}

.plants-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.plant-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
}

.plant-card:hover {
  box-shadow: 0 8px 24px rgba(61,190,122,0.12);
  transform: translateY(-2px);
}

.plant-img {
  height: 180px;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  border-bottom: 1px solid var(--color-border);
}

.plant-body {
  padding: 1.25rem;
}

.plant-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.plant-latin {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: 0.75rem;
}

.plant-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.plant-school {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.difficulty-tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

.difficulty-easy { background: var(--color-primary-light); color: var(--color-primary-dark); }
.difficulty-medium { background: #FFF3E0; color: #E65100; }
.difficulty-hard { background: #FCE4EC; color: #C62828; }

/* ── Schools ── */
.schools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.school-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: box-shadow var(--transition);
}

.school-card:hover {
  box-shadow: 0 6px 20px rgba(0,0,0,0.06);
}

.school-avatar {
  width: 3rem;
  height: 3rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 800;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.school-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.school-info {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.school-stats {
  display: flex;
  gap: 1.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.school-stat-n {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-primary);
}

.school-stat-l {
  font-size: 0.73rem;
  color: var(--color-text-muted);
}

/* ── CTA Banner ── */
.cta-banner {
  background: var(--color-bg-dark);
  color: #fff;
  text-align: center;
  padding: 5rem 3.5rem;
}

.cta-banner .section-label {
  color: var(--color-primary-light);
}

.cta-banner .section-title {
  color: #fff;
  font-size: 2.25rem;
  margin: 0 auto 1rem;
  max-width: 600px;
}

.cta-banner p {
  color: rgba(255,255,255,0.65);
  font-size: 1rem;
  margin-bottom: 2rem;
}

.btn-white {
  background: #fff;
  color: var(--color-text);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-md);
  display: inline-block;
  transition: opacity var(--transition);
}

.btn-white:hover { opacity: 0.92; }

/* ── Footer ── */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 3rem 3.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 0.3rem;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--color-primary); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 99px; }