:root {
  --bg: #0f172a;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --text: #1e293b;
  --text-muted: #64748b;
  --accent: #1d4ed8;
  --accent-dark: #1e40af;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --success: #15803d;
  --success-bg: #f0fdf4;
  --border: #e2e8f0;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, var(--bg) 0%, #1e293b 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px;
}

.site-header {
  text-align: center;
  color: #fff;
  margin-bottom: 32px;
}

.hebrew-title {
  font-size: 1.5rem;
  font-weight: 500;
  opacity: 0.85;
  margin-bottom: 8px;
  direction: rtl;
}

.site-header h1 {
  font-size: 2rem;
  margin: 0 0 8px;
  font-weight: 700;
}

.subtitle {
  margin: 0;
  opacity: 0.75;
  font-size: 0.95rem;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
}

.requirements h2 {
  margin: 0 0 18px;
  font-size: 1.25rem;
  color: var(--text);
}

.requirements ol {
  margin: 0;
  padding-left: 22px;
}

.requirements li {
  margin-bottom: 10px;
  color: var(--text);
}

.requirements li strong {
  color: var(--accent-dark);
}

.entry-form {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.entry-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.entry-form input {
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.entry-form input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.1);
}

.hint {
  margin: 10px 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.btn-primary,
.btn-secondary,
.btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s, box-shadow 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  margin-top: 16px;
}

.btn-primary:hover {
  background: var(--accent-dark);
  box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
}

.btn-secondary {
  background: var(--surface-alt);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: #f1f5f9;
}

.btn-download {
  background: var(--success);
  color: #fff;
  width: 100%;
  margin-top: 20px;
}

.btn-download:hover {
  background: #166534;
  box-shadow: 0 4px 12px rgba(21, 128, 61, 0.25);
}

.btn-primary:active,
.btn-secondary:active,
.btn-download:active {
  transform: translateY(1px);
}

.download-section {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.success-banner {
  background: var(--success-bg);
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  padding: 16px;
  color: var(--success);
}

.success-banner p {
  margin: 4px 0 0;
  color: var(--text);
}

.success-banner strong {
  color: var(--success);
}

.countdown {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 18px;
  margin-top: 16px;
}

.countdown-label {
  font-weight: 600;
  color: var(--text);
}

.countdown-digits {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--danger);
}

.countdown-digits.safe {
  color: var(--success);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 460px;
  width: 100%;
  padding: 28px;
  animation: modal-in 0.2s ease-out;
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal h3 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}

.warning-box {
  background: var(--danger-bg);
  border-left: 4px solid var(--danger);
  border-radius: 6px;
  padding: 14px;
  margin: 16px 0;
  color: var(--danger);
}

.warning-box p {
  margin: 0;
}

.warning-box strong {
  color: var(--danger);
}

.modal-hint {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0 0 20px;
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.modal-actions button {
  margin-top: 0;
}

.site-footer {
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  margin-top: 32px;
}

.hidden {
  display: none !important;
}

@media (max-width: 560px) {
  .page {
    padding: 24px 16px;
  }

  .card {
    padding: 22px;
  }

  .site-header h1 {
    font-size: 1.6rem;
  }

  .countdown {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .modal-actions {
    flex-direction: column;
  }

  .modal-actions button {
    width: 100%;
  }
}