/* ============================================================================
 * stavba.projektovnik.cz — base.css
 * Design system (CSS proměnné, layout, splash, login, app shell, toasty)
 * ----------------------------------------------------------------------------
 * Barvy se dynamicky přepisují přes JS (theme.js) z firma.nastaveni.brand.
 * Theme světlý/tmavý je řízen atributem data-theme na <html>.
 * ============================================================================ */

:root {
  /* Brand barvy (přepisuje JS dle firmy) */
  --c-primary: #D35400;
  --c-primary-rgb: 211, 84, 0;
  --c-primary-darker: #b94800;
  --c-secondary: #E6A817;
  --c-donut: #D35400;
  --c-text-brand: #1E2A36;

  /* SVĚTLÉ schéma defaults (default) */
  --c-bg: #f4f5f7;
  --c-surface: #ffffff;
  --c-surface-2: #f8f9fb;
  --c-surface-3: #eef0f4;
  --c-border: #d8dde3;
  --c-text: #1E2A36;
  --c-text-dim: #4a5562;
  --c-text-muted: #8a93a0;
  --c-success: #28a745;
  --c-warning: #f0ad4e;
  --c-danger: #dc3545;
  --c-info: #17a2b8;

  /* Spacing & radius */
  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 24px;

  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .15);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, .25);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, .35);

  --header-h: 64px;
  --header-z: 1100;
  --modal-z: 1500;
  --toast-z: 2000;

  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

html[data-theme="light"] {
  --c-bg: #f4f5f7;
  --c-surface: #ffffff;
  --c-surface-2: #f8f9fb;
  --c-surface-3: #eef0f4;
  --c-border: #d8dde3;
  --c-text: #1E2A36;
  --c-text-dim: #4a5562;
  --c-text-muted: #8a93a0;
}
html[data-theme="dark"] {
  --c-bg: #0e1116;
  --c-surface: #161b22;
  --c-surface-2: #1f2630;
  --c-surface-3: #2a3340;
  --c-border: #2d3640;
  --c-text: #f3f4f6;
  --c-text-dim: #aab1bc;
  --c-text-muted: #6e7681;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; min-height: 100%; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.5;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }
a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

[hidden] { display: none !important; }

/* ===== Auth boot splash ===== */
.auth-boot {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--s-4);
  background: var(--c-bg);
  padding: var(--s-5);
}
.auth-boot__logo {
  width: 96px;
  height: 96px;
  object-fit: contain;
  filter: drop-shadow(0 6px 20px rgba(0, 0, 0, .35));
}
.auth-boot__spinner {
  width: 44px;
  height: 44px;
  border: 4px solid var(--c-border);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
.auth-boot__text {
  margin: 0;
  color: var(--c-text-dim);
  font-size: 0.95rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Login overlay ===== */
.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 8000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-bg);
  padding: var(--s-4);
}
.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--s-6) var(--s-5);
  box-shadow: var(--shadow-lg);
  text-align: center;
}
.login-card__logo {
  width: 110px;
  height: 110px;
  margin: 0 auto var(--s-4);
  object-fit: contain;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, .15));
}
.login-card__title {
  margin: 0 0 var(--s-2);
  font-size: 1.5rem;
  color: var(--c-text);
}
.login-theme-toggle {
  position: absolute;
  top: var(--s-4);
  right: var(--s-4);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: var(--shadow-sm);
}
.login-theme-toggle:hover { background: var(--c-surface-2); }
.password-wrap {
  position: relative;
  display: flex;
  align-items: stretch;
}
.password-wrap input {
  flex: 1;
  padding-right: 44px;
}
.password-toggle {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--c-text-dim);
  border-radius: 8px;
}
.password-toggle:hover { color: var(--c-text); background: var(--c-surface-3); }
.login-card__sub {
  margin: 0 0 var(--s-5);
  color: var(--c-text-dim);
  font-size: 0.95rem;
}
.login-card__divider {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  margin: var(--s-4) 0;
  color: var(--c-text-muted);
  font-size: 0.85rem;
  text-transform: lowercase;
}
.login-card__divider::before,
.login-card__divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--c-border);
}
.login-form { display: flex; flex-direction: column; gap: var(--s-3); }
.form-row {
  display: flex;
  flex-direction: column;
  gap: var(--s-1);
  text-align: left;
}
.form-row > span {
  font-size: 0.85rem;
  color: var(--c-text-dim);
}
.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-surface-2);
  color: var(--c-text);
  font-size: 1rem;
  font-family: inherit;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(var(--c-primary-rgb), .25);
}
.login-card__hint {
  margin-top: var(--s-5);
  font-size: 0.8rem;
  color: var(--c-text-muted);
  text-align: center;
  line-height: 1.5;
}
.login-error {
  margin: 0;
  padding: var(--s-2) var(--s-3);
  background: rgba(220, 53, 69, .12);
  border: 1px solid rgba(220, 53, 69, .35);
  border-radius: var(--r-sm);
  color: var(--c-danger);
  font-size: 0.85rem;
  text-align: left;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform .1s, background .15s, border-color .15s;
  text-decoration: none;
  user-select: none;
  background: var(--c-surface-2);
  color: var(--c-text);
  font-family: inherit;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn--primary {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}
.btn--primary:hover:not(:disabled) { background: var(--c-primary-darker); }
.btn--ghost {
  background: transparent;
  border-color: var(--c-border);
  color: var(--c-text);
}
.btn--danger {
  background: var(--c-danger);
  color: #fff;
  border-color: var(--c-danger);
}
.btn--google {
  width: 100%;
  background: #fff;
  color: #1f1f1f;
  border-color: #dadce0;
}
.btn--google:hover:not(:disabled) { background: #f8f9fa; }
.btn--block { width: 100%; }
.btn--sm { padding: 6px 12px; font-size: 0.85rem; border-radius: var(--r-sm); }
.btn--lg { padding: 14px 24px; font-size: 1.05rem; }

/* ===== App shell ===== */
.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.app-header {
  position: sticky;
  top: 0;
  z-index: var(--header-z);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--s-4);
  height: var(--header-h);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
}
.app-header__brand {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  color: var(--c-text);
  text-decoration: none;
}
.app-header__brand:hover { text-decoration: none; }
.app-header__logo {
  width: 96px;
  height: 56px;
  object-fit: contain;
  border-radius: var(--r-sm);
  max-width: 140px;
}
.app-header__title {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--c-text);
  letter-spacing: -.01em;
}
/* Pokud firma má nahrané logo, schováme text názvu na všech zařízeních */
.app-header__brand[data-has-logo="1"] .app-header__title {
  display: none;
}
/* Na desktopu logo bez textu zvětšíme */
@media (min-width: 641px) {
  .app-header__brand[data-has-logo="1"] .app-header__logo {
    width: 148px;
    height: 64px;
  }
}
.app-header__right {
  display: flex;
  align-items: center;
  gap: var(--s-2);
}
.user-name {
  font-size: 0.9rem;
  color: var(--c-text-dim);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--c-border);
}
.icon-btn {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  color: var(--c-text);
  cursor: pointer;
  font-size: 1.1rem;
}
.icon-btn:hover { background: var(--c-surface-2); border-color: var(--c-border); }

.app-main {
  flex: 1;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--s-5) var(--s-4) var(--s-7);
}

/* ===== Toasty ===== */
.toast-root {
  position: fixed;
  bottom: var(--s-5);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--toast-z);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  pointer-events: none;
  width: min(420px, calc(100vw - 32px));
}
.toast {
  background: var(--c-surface);
  color: var(--c-text);
  padding: var(--s-3) var(--s-4);
  border-radius: var(--r-md);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-md);
  font-size: 0.9rem;
  pointer-events: auto;
  animation: toastIn .25s ease;
}
.toast--success { border-left: 4px solid var(--c-success); }
.toast--danger { border-left: 4px solid var(--c-danger); }
.toast--warning { border-left: 4px solid var(--c-warning); }
.toast--info { border-left: 4px solid var(--c-info); }
@keyframes toastIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Modal ===== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--modal-z);
  background: rgba(0, 0, 0, .55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--s-3);
}
.modal {
  background: var(--c-surface);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 560px;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal--wide { max-width: 920px; }
.modal--full { max-width: 100%; height: 92vh; max-height: 92vh; }
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-4);
  border-bottom: 1px solid var(--c-border);
}
.modal__title { margin: 0; font-size: 1.1rem; }
.modal__body {
  padding: var(--s-4);
  overflow-y: auto;
  flex: 1;
}
.modal__footer {
  padding: var(--s-3) var(--s-4);
  border-top: 1px solid var(--c-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--s-2);
}

/* ===== Empty state ===== */
.empty-state {
  background: var(--c-surface);
  border: 1px dashed var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--s-7);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  align-items: center;
}
.empty-state h2 { margin: 0; font-size: 1.25rem; }
.empty-state__sub { margin: 0; color: var(--c-text-dim); max-width: 480px; }

/* ===== Util classes ===== */
.muted { color: var(--c-text-muted); }
.dim { color: var(--c-text-dim); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-1 { flex: 1; }
.gap-2 { gap: var(--s-2); }
.gap-3 { gap: var(--s-3); }
.gap-4 { gap: var(--s-4); }
.center { display:flex; align-items:center; justify-content:center; }
.mt-3 { margin-top: var(--s-3); }
.mt-4 { margin-top: var(--s-4); }
.mt-5 { margin-top: var(--s-5); }

/* ===== Form ===== */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-3);
}
@media (max-width: 600px) {
  .form-grid { grid-template-columns: 1fr; }
}
.form-row textarea { min-height: 80px; resize: vertical; }
.form-row--check {
  flex-direction: row;
  align-items: center;
  gap: var(--s-2);
}
.form-row--check input { width: auto; }

/* ===== Tabs ===== */
.tabs {
  display: flex;
  gap: var(--s-1);
  border-bottom: 1px solid var(--c-border);
  margin-bottom: var(--s-4);
  overflow-x: auto;
}
.tab-btn {
  background: transparent;
  border: none;
  padding: 12px 16px;
  font-size: 0.95rem;
  color: var(--c-text-dim);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  font-family: inherit;
}
.tab-btn.active {
  color: var(--c-primary);
  border-bottom-color: var(--c-primary);
}

/* ===== Cards ===== */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--s-4);
}

/* ===== Responsive header ===== */
@media (max-width: 540px) {
  .user-name { display: none; }
  .app-header { padding: 0 var(--s-3); }
  .app-header__title { font-size: 0.95rem; }
  .app-header__logo { width: 80px; height: 48px; }
}

/* ===== Print ===== */
.no-print {}
@media print {
  .no-print, .app-header, .toast-root { display: none !important; }
  body { background: #fff !important; color: #000 !important; }
}
