:root {
  /* =============================
   * Variables: Colors
   * ============================= */
  --color-background: #0f1411;
  --color-surface: #151c18;
  --color-surface-alt: #1d2620;
  --color-text: #f5f7f4;
  --color-text-muted: #a9b3aa;
  --color-border-subtle: #2b3530;
  --color-border-strong: #3c4a42;

  --color-primary: #4caf50; /* modern, fresh green */
  --color-primary-soft: rgba(76, 175, 80, 0.15);
  --color-primary-strong: #2f7b34;

  --color-success: #7ecf68;
  --color-warning: #ffb648;
  --color-danger: #ff5c5c;

  --gray-50: #f9faf9;
  --gray-100: #edf1ed;
  --gray-200: #d8e0d9;
  --gray-300: #b8c5ba;
  --gray-400: #94a397;
  --gray-500: #6f7f73;
  --gray-600: #556257;
  --gray-700: #3c4740;
  --gray-800: #252e28;
  --gray-900: #111612;

  /* Overlays */
  --overlay-soft: rgba(10, 18, 13, 0.55);
  --overlay-strong: rgba(10, 18, 13, 0.85);

  /* =============================
   * Variables: Typography
   * ============================= */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  --font-display: "SF Pro Display", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-md: 1.0625rem; /* 17px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.5rem;    /* 24px */
  --font-size-2xl: 1.875rem; /* 30px */
  --font-size-3xl: 2.25rem;  /* 36px */
  --font-size-4xl: 3rem;     /* 48px */

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* =============================
   * Variables: Spacing (0–96px)
   * ============================= */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-7: 1.75rem;  /* 28px */
  --space-8: 2rem;     /* 32px */
  --space-9: 2.5rem;   /* 40px */
  --space-10: 3rem;    /* 48px */
  --space-11: 3.5rem;  /* 56px */
  --space-12: 4rem;    /* 64px */
  --space-14: 4.5rem;  /* 72px */
  --space-16: 6rem;    /* 96px */

  /* =============================
   * Variables: Radius, Shadows, Motion
   * ============================= */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-pill: 999px;

  --shadow-soft: 0 18px 60px rgba(0, 0, 0, 0.5);
  --shadow-elevated: 0 28px 80px rgba(0, 0, 0, 0.65);
  --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.35);

  --transition-fast: 150ms ease-out;
  --transition-medium: 220ms ease-out;
  --transition-slow: 320ms ease-out;
}

/* =====================================
 * Reset / Normalize
 * ===================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
}

h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd {
  margin: 0;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
  padding: 0;
  margin: 0;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

button {
  border: none;
  padding: 0;
  background: none;
}

/* Prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* =====================================
 * Base Styles
 * ===================================== */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background: radial-gradient(circle at top left, #1b2a22 0, #0a0f0c 60%, #050706 100%);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.875rem, 2.5vw, 2.5rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

h3 {
  font-size: 1.5rem;
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-3);
}

h4 {
  font-size: 1.25rem;
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}

p + p {
  margin-top: -0.5rem;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  text-underline-offset: 0.2em;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-strong);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

strong {
  font-weight: var(--font-weight-semibold);
}

::selection {
  background: rgba(76, 175, 80, 0.22);
  color: var(--color-text);
}

/* =====================================
 * Accessibility / Focus
 * ===================================== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Hide default focus for mouse users in some browsers */
:focus:not(:focus-visible) {
  outline: none;
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* =====================================
 * Utilities
 * ===================================== */
.container {
  width: 100%;
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
}

/* Flex */
.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.flex-wrap {
  flex-wrap: wrap;
}

.gap-sm {
  gap: var(--space-3);
}

.gap-md {
  gap: var(--space-4);
}

.gap-lg {
  gap: var(--space-6);
}

/* Grid */
.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (max-width: 900px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

.text-center {
  text-align: center;
}

.mt-section {
  margin-top: var(--space-12);
}

.mb-section {
  margin-bottom: var(--space-12);
}

/* Utility: soft section background evoking indoor greenery shadows */
.section-soft {
  position: relative;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 10% 0, rgba(76, 175, 80, 0.08), transparent 55%),
              radial-gradient(circle at 90% 100%, rgba(126, 207, 104, 0.08), transparent 55%),
              rgba(10, 15, 12, 0.9);
  border: 1px solid rgba(120, 140, 120, 0.16);
  box-shadow: var(--shadow-soft);
}

/* =====================================
 * Components
 * ===================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background-color var(--transition-medium),
    color var(--transition-medium),
    border-color var(--transition-medium),
    box-shadow var(--transition-medium),
    transform var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-strong) 100%);
  color: #07110a;
  box-shadow: 0 14px 40px rgba(76, 175, 80, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 52px rgba(76, 175, 80, 0.45);
  filter: saturate(1.1);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 8px 24px rgba(76, 175, 80, 0.35);
}

.btn-outline {
  background: rgba(10, 15, 12, 0.8);
  color: var(--color-text);
  border-color: rgba(158, 214, 149, 0.4);
}

.btn-outline:hover {
  background: rgba(76, 175, 80, 0.12);
  border-color: rgba(158, 214, 149, 0.9);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn:focus-visible {
  outline: 2px solid rgba(217, 255, 219, 0.85);
  outline-offset: 4px;
}

/* Inputs & Textareas */
.input,
.textarea,
select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(145, 165, 150, 0.4);
  background: radial-gradient(circle at top left, rgba(82, 121, 98, 0.14), transparent 55%),
              rgba(9, 13, 10, 0.9);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.input::placeholder,
.textarea::placeholder {
  color: rgba(169, 179, 170, 0.7);
}

.input:focus-visible,
.textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: rgba(188, 255, 195, 0.95);
  box-shadow: 0 0 0 1px rgba(188, 255, 195, 0.8), 0 14px 40px rgba(0, 0, 0, 0.65);
  transform: translateY(-1px);
}

.input:disabled,
.textarea:disabled,
select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.textarea {
  min-height: 130px;
  resize: vertical;
}

label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

/* Cards (for services, cases, etc.) */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background:
    radial-gradient(circle at 0 0, rgba(76, 175, 80, 0.14), transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(126, 207, 104, 0.12), transparent 60%),
    rgba(9, 13, 10, 0.96);
  border: 1px solid rgba(145, 165, 150, 0.35);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at 0 0, rgba(210, 255, 218, 0.12), transparent 55%);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-medium);
}

.card:hover::before {
  opacity: 1;
}

.card-header {
  margin-bottom: var(--space-3);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

.card-meta {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

.card-body {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Tag / pill for sustainability labels */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(64, 160, 82, 0.14);
  color: #cfead4;
  border: 1px solid rgba(164, 228, 176, 0.55);
}

/* Hero-like image frames for office greenery visuals */
.hero-media-frame {
  position: relative;
  border-radius: 1.75rem;
  overflow: hidden;
  border: 1px solid rgba(158, 214, 149, 0.4);
  box-shadow: var(--shadow-elevated);
  background: radial-gradient(circle at 30% 0, rgba(158, 214, 149, 0.18), transparent 55%),
              rgba(5, 8, 6, 0.98);
}

.hero-media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(4, 8, 5, 0.7) 0, transparent 45%);
  mix-blend-mode: multiply;
  pointer-events: none;
}

/* Accent line used under headings for Dutch sections titles */
.heading-accent {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.heading-accent::after {
  content: "";
  display: block;
  width: 52px;
  height: 1px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(126, 207, 104, 0.2), rgba(126, 207, 104, 0.95));
}

/* Status colors (success, warning, danger) */
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }

.bg-success-soft { background-color: rgba(126, 207, 104, 0.12); }
.bg-warning-soft { background-color: rgba(255, 182, 72, 0.12); }
.bg-danger-soft { background-color: rgba(255, 92, 92, 0.12); }

.border-subtle { border: 1px solid var(--color-border-subtle); }

/* End of base.css */