:root {
  --bg: #06060a;
  --bg-soft: #10121a;
  --bg-alt: #151724;
  --accent: #4fd1a5;
  --accent-soft: rgba(79, 209, 165, 0.16);
  --accent-strong: #33b487;
  --text: #f7fafc;
  --text-muted: #a0aec0;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --radius-lg: 1.5rem;
  --radius-md: 0.9rem;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.5);
  --shadow-subtle: 0 12px 30px rgba(0, 0, 0, 0.35);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: radial-gradient(circle at top, #181b2d 0, #06060a 55%);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
}

/* Layout */

.zf-container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.zf-section {
  padding: 3.5rem 0;
}

.zf-section-alt {
  background: rgba(10, 12, 22, 0.9);
}

/* Header */

.zf-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(5, 7, 15, 0.95),
    rgba(5, 7, 15, 0.8),
    transparent
  );
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.zf-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.zf-logo {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.zf-logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: radial-gradient(circle at 20% 0, #8be9c8 0, #276b4d 55%, #0b1820 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #08110f;
  box-shadow: 0 0 0 1px rgba(190, 255, 230, 0.45), var(--shadow-subtle);
  font-size: 0.95rem;
}

.zf-logo-text {
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.86rem;
  color: #e2fdf3;
}

.zf-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.zf-nav a {
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--text-muted);
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.zf-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-1px);
}

.zf-nav-cta {
  border: 1px solid rgba(79, 209, 165, 0.55);
  color: #e6fff6;
}

/* Hero */

.zf-hero {
  padding: 3.75rem 0 3rem;
}

.zf-hero-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.zf-hero-copy h1 {
  font-size: 2.1rem;
  line-height: 1.15;
  margin: 0 0 1rem;
}

.zf-hero-copy p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.zf-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.zf-hero-note {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.zf-hero-card {
  background: linear-gradient(
    135deg,
    rgba(13, 19, 33, 0.96),
    rgba(17, 24, 39, 0.98)
  );
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.4rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.zf-hero-card-header {
  margin-bottom: 0.9rem;
}

.zf-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.16rem 0.6rem;
  border-radius: 999px;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  background: var(--accent-soft);
  color: #b7f5dd;
  border: 1px solid rgba(79, 209, 165, 0.5);
}

.zf-hero-card h2 {
  margin: 0.55rem 0 0.2rem;
  font-size: 1.15rem;
}

.zf-hero-list {
  list-style: none;
  padding: 0;
  margin: 0.6rem 0 0.8rem;
}

.zf-hero-list li {
  margin-bottom: 0.4rem;
  font-size: 0.96rem;
  color: #e2e8f0;
}

.zf-hero-card-foot {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Buttons */

.zf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.zf-btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #041611;
  box-shadow: 0 16px 35px rgba(20, 180, 120, 0.4);
}

.zf-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 45px rgba(20, 180, 120, 0.6);
}

.zf-btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.zf-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* Sections */

h2 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: 1.5rem;
}

h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

p {
  font-size: 0.98rem;
}

/* Grids */

.zf-grid-2 {
  display: grid;
  gap: 1.75rem;
}

.zf-highlight-box {
  border-radius: var(--radius-lg);
  padding: 1.3rem 1.3rem;
  background: radial-gradient(circle at top left, rgba(79, 209, 165, 0.16), transparent 60%);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
}

.zf-highlight-box ul {
  padding-left: 1.1rem;
  margin: 0.2rem 0 0;
}

.zf-highlight-box li {
  margin-bottom: 0.3rem;
}

.zf-bullet-list {
  padding-left: 1.1rem;
  margin: 0.4rem 0 0;
}

.zf-bullet-list li {
  margin-bottom: 0.35rem;
}

/* Callout */

.zf-callout {
  border-radius: var(--radius-md);
  padding: 1.1rem 1.2rem;
  border: 1px solid rgba(250, 202, 21, 0.5);
  background: linear-gradient(
    145deg,
    rgba(250, 202, 21, 0.08),
    rgba(15, 12, 6, 0.95)
  );
  box-shadow: var(--shadow-subtle);
}

.zf-callout-title {
  margin: 0 0 0.4rem;
  font-weight: 600;
}

/* Form */

.zf-form-wrapper {
  display: grid;
  gap: 1.8rem;
}

.zf-form-intro p {
  color: var(--text-muted);
}

.zf-form {
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.4rem;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
}

.zf-form-row {
  display: grid;
  gap: 1rem;
  margin-bottom: 1rem;
}

.zf-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
}

.zf-field label {
  font-weight: 500;
}

.zf-field input,
.zf-field select,
.zf-field textarea {
  border-radius: 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.8);
  background: rgba(15, 23, 42, 0.9);
  padding: 0.55rem 0.7rem;
  color: var(--text);
  font: inherit;
}

.zf-field input:focus,
.zf-field select:focus,
.zf-field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

.zf-field-inline {
  flex-direction: row;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 0.7rem 0 1rem;
}

.zf-field-inline input[type="checkbox"] {
  margin-top: 0.2rem;
}

.zf-form-footnote {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Support section */

.zf-support {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.zf-support-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
}

.zf-support-list li {
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

.zf-support-list a {
  color: var(--accent);
  text-decoration: none;
}

.zf-support-list a:hover {
  text-decoration: underline;
}

/* Footer */

.zf-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 1.4rem 0 2rem;
  background: rgba(3, 5, 10, 0.95);
}

.zf-footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.zf-footer-note {
  color: #9ae6b4;
}

/* Responsive */

@media (min-width: 720px) {
  .zf-hero-inner {
    flex-direction: row;
    align-items: stretch;
  }

  .zf-hero-copy,
  .zf-hero-card {
    flex: 1;
  }

  .zf-hero-card {
    margin-left: 1.5rem;
  }

  .zf-grid-2 {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  }

  .zf-form-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .zf-footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (max-width: 640px) {
  .zf-header-inner {
    gap: 0.75rem;
  }

  .zf-nav {
    display: none;
  }

  .zf-hero-copy h1 {
    font-size: 1.7rem;
  }
}
/* Logo in header */

.zf-logo-link {
  display: inline-flex;
  align-items: center;
}

.zf-logo-img {
  height: 48px;
  width: auto;
  display: block;
}

/* Green DONATE button */

.zf-btn-donate {
  padding: 0.45rem 0.95rem;
  font-size: 0.9rem;
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: #000; /* readable black text */
  border: 1px solid rgba(34, 197, 94, 0.95);
  box-shadow: 0 12px 30px rgba(22, 163, 74, 0.5);
  font-weight: 600;
}

.zf-btn-donate:hover {
  background: #000;     /* invert */
  color: #fff;          /* white on black */
  border-color: #000;
  transform: translateY(-1px);
  box-shadow: 0 16px 38px rgba(22, 163, 74, 0.45);
}