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

:root {
  --c-bg: #f8f8f6;
  --c-surface: #ffffff;
  --c-border: #e0ddd6;
  --c-text: #1a1a18;
  --c-text-muted: #6b6860;
  --c-accent: #2d6a2d;
  --c-accent-hover: #245424;
  --c-danger: #c0392b;
  --c-danger-hover: #a93226;
  --c-warning-bg: #fff8e1;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
  --gap: 12px;
  --max-w: 720px;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--c-text);
  background: var(--c-bg);
  min-height: 100dvh;
}

a { color: var(--c-accent); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary   { background: var(--c-accent); color: #fff; }
.btn-primary:hover { background: var(--c-accent-hover); }
.btn-secondary { background: var(--c-surface); color: var(--c-text); border: 1px solid var(--c-border); }
.btn-secondary:hover { background: var(--c-bg); }
.btn-danger    { background: var(--c-danger); color: #fff; }
.btn-danger:hover { background: var(--c-danger-hover); }
.btn-ghost     { background: transparent; color: var(--c-accent); padding: 6px 10px; }
.btn-ghost:hover { background: rgba(45,106,45,.08); }
.btn:disabled  { opacity: .45; cursor: not-allowed; }

/* --- Inputs --- */
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-size: 15px;
  font-family: inherit;
  background: var(--c-surface);
  color: var(--c-text);
  transition: border-color .15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--c-accent);
}
textarea { resize: vertical; min-height: 72px; }

label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 4px; color: var(--c-text-muted); }

.field { display: flex; flex-direction: column; gap: 4px; }

/* --- Header --- */
.app-header {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  padding: 0 var(--gap);
}
.app-header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  gap: var(--gap);
}
.app-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-accent);
  text-decoration: none;
}

/* --- Language toggle --- */
.lang-toggle {
  display: flex;
  gap: 2px;
  font-size: 13px;
}
.lang-toggle button {
  background: none;
  border: none;
  padding: 4px 6px;
  cursor: pointer;
  color: var(--c-text-muted);
  border-radius: 4px;
  font-size: 13px;
}
.lang-toggle button.active {
  color: var(--c-accent);
  font-weight: 700;
}
.lang-toggle button:hover { background: var(--c-bg); }

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-text);
  color: #fff;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 14px;
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transition: opacity .2s;
}
.toast.visible { opacity: 1; }

/* --- Modal overlay --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
  padding: var(--gap);
}
@media (min-width: 480px) {
  .modal-overlay { align-items: center; }
}
.modal {
  background: var(--c-surface);
  border-radius: 16px;
  width: 100%;
  max-width: 480px;
  max-height: 90dvh;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.modal-title { font-size: 18px; font-weight: 700; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }

.hidden { display: none !important; }

/* --- Page container --- */
.page { max-width: var(--max-w); margin: 0 auto; padding: var(--gap); }