/* ==========================================================================
   Packager styles

   1. Design tokens (light + dark)
   2. Base / reset
   3. Layout: header, main, empty state
   4. Package card + carrier badges
   5. Dialogs
   6. Forms
   7. Buttons
   ========================================================================== */

/* 1. Design tokens -------------------------------------------------------- */

:root {
  color-scheme: light dark;

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif,
    "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --color-page: #f9fafb;
  --color-surface: #ffffff;
  --color-field: #ffffff;
  --color-border: #e5e7eb;
  --color-card-border: #f3f4f6;
  --color-field-border: #d1d5db;
  --color-pressed: #f3f4f6;

  --color-text: #111827;
  --color-text-strong: #374151;   /* labels, secondary buttons */
  --color-text-body: #4b5563;     /* dialog body copy */
  --color-text-muted: #6b7280;    /* upcoming delivery date */
  --color-text-subtle: #9ca3af;   /* tracking number, notes, placeholders */

  --color-brand: #166534;
  --color-brand-pressed: #14532d;
  --color-focus: #15803d;

  --color-danger: #dc2626;
  --color-danger-pressed: #991b1b;
  --color-danger-icon: #f87171;
  --color-danger-icon-pressed-bg: #fef2f2;
  --color-error: #ef4444;
  --color-error-border: #f87171;

  --color-delivery-today: #eab308;
  --color-delivery-overdue: #ef4444;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  --content-width: 32rem;
  --transition: 150ms ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-page: #111827;
    --color-surface: #1f2937;
    --color-field: #111827;
    --color-border: #374151;
    --color-card-border: #374151;
    --color-field-border: #4b5563;
    --color-pressed: #374151;

    --color-text: #f3f4f6;
    --color-text-strong: #d1d5db;
    --color-text-body: #9ca3af;
    --color-text-muted: #9ca3af;
    --color-text-subtle: #6b7280;

    --color-danger-icon-pressed-bg: rgb(127 29 29 / 0.4);
  }
}

/* 2. Base / reset --------------------------------------------------------- */

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

* {
  -webkit-tap-highlight-color: transparent;
}

html {
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-page);
  color: var(--color-text);
  overscroll-behavior: none;
}

h1,
h2,
p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

svg {
  display: block;
  flex-shrink: 0;
}

/* `hidden` must win over any display rule set below. */
[hidden] {
  display: none !important;
}

/* 3. Layout --------------------------------------------------------------- */

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.app-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 1rem;
}

.app-header__title {
  font-size: 1.25rem;
  line-height: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.add-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  background: var(--color-brand);
  color: #fff;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition);
}

.add-button:active {
  background: var(--color-brand-pressed);
}

.app-main {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 1rem;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 5rem 0;
  text-align: center;
}

.empty-state__icon {
  margin-bottom: 1rem;
  font-size: 3.75rem;
  line-height: 1;
}

.empty-state__title {
  color: var(--color-text-muted);
  font-weight: 500;
}

.empty-state__hint {
  margin-top: 0.25rem;
  color: var(--color-text-subtle);
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.package-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* 4. Package card --------------------------------------------------------- */

.card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

/* min-width: 0 lets long labels truncate instead of stretching the card. */
.card__info {
  flex: 1;
  min-width: 0;
}

.card__label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.25;
}

.card__delivery {
  margin-top: 0.125rem;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.card__delivery--today {
  color: var(--color-delivery-today);
  font-weight: 500;
}

.card__delivery--overdue {
  color: var(--color-delivery-overdue);
  font-weight: 500;
}

.card__tracking,
.card__notes {
  margin-top: 0.125rem;
  color: var(--color-text-subtle);
  font-size: 0.75rem;
  line-height: 1rem;
}

.card__tracking {
  font-family: var(--font-mono);
}

.card__notes {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card__actions {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  flex-shrink: 0;
}

.icon-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-lg);
  color: var(--color-text-subtle);
  transition: background-color var(--transition);
}

.icon-button:active {
  background: var(--color-pressed);
}

.icon-button--danger {
  color: var(--color-danger-icon);
}

.icon-button--danger:active {
  background: var(--color-danger-icon-pressed-bg);
}

/* Carrier badge. Each carrier gets a `.badge--<id>` colour (ids from js/carriers.js). */
.badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.125rem;
  flex-shrink: 0;
  min-width: 52px;
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-md);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.025em;
  text-transform: uppercase;
  text-align: center;
  transition: opacity var(--transition);
}

.badge:active {
  opacity: 0.7;
}

.badge__icon {
  opacity: 0.6;
}

.badge--usps       { background: #1e40af; color: #fff; }
.badge--ups        { background: #92400e; color: #fff; }
.badge--fedex      { background: #7e22ce; color: #fff; }
.badge--amazon     { background: #fb923c; color: #111827; }
.badge--dhl        { background: #facc15; color: #b91c1c; }
.badge--ontrac     { background: #15803d; color: #fff; }
.badge--lasership  { background: #3b82f6; color: #fff; }
.badge--gofo       { background: #fc4c02; color: #fff; }
.badge--yunexpress { background: #2b9a9a; color: #fff; }
.badge--uniuni     { background: #f68841; color: #111827; }
.badge--other      { background: #6b7280; color: #fff; }

/* 5. Dialogs -------------------------------------------------------------- */

dialog {
  padding: 0;
  border: 0;
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-xl);
}

/* Custom properties are not reliably inherited by ::backdrop, so use a literal. */
dialog::backdrop {
  background: rgb(0 0 0 / 0.6);
}

/* Add / edit: a bottom sheet on phones, a centred card on wider screens. */
.sheet {
  width: 100%;
  max-width: var(--content-width);
  max-height: 90vh;
  margin: auto auto 0;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  overflow-y: auto;
}

@media (min-width: 640px) {
  .sheet {
    margin: auto;
    border-radius: var(--radius-xl);
  }
}

.sheet__content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.25rem;
}

/* Delete confirmation: always a small centred card. */
.modal {
  width: calc(100% - 2rem);
  max-width: 24rem;
  padding: 1.5rem;
  border-radius: var(--radius-xl);
}

.modal__message {
  margin-bottom: 1.5rem;
  color: var(--color-text-body);
  font-size: 0.875rem;
  line-height: 1.625;
}

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

.dialog-title {
  margin-bottom: 0.25rem; /* plus the form's 1rem gap = 1.25rem */
  font-size: 1.25rem;
  line-height: 1.75rem;
  font-weight: 700;
}

.dialog-title--compact {
  margin-bottom: 0.5rem;
}

.dialog-actions {
  display: flex;
  gap: 0.75rem;
}

.sheet .dialog-actions {
  padding-top: 0.25rem;
}

/* 6. Forms ---------------------------------------------------------------- */

.field__label-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.field__label {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--color-text-strong);
  font-size: 0.875rem;
  line-height: 1.25rem;
  font-weight: 500;
}

.field__label-row .field__label {
  margin-bottom: 0;
}

.field__required,
.field__error {
  color: var(--color-error);
}

.field__error {
  margin-top: 0.25rem;
  font-size: 0.75rem;
  line-height: 1rem;
}

.input {
  display: block;
  width: 100%;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-field-border);
  border-radius: var(--radius-lg);
  background: var(--color-field);
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.5rem;
}

.input::placeholder {
  color: var(--color-text-subtle);
  opacity: 1;
}

.input:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-focus);
}

.input--invalid {
  border-color: var(--color-error-border);
}

.input--date {
  width: auto;
}

.input--textarea {
  resize: none;
}

.link-button {
  color: var(--color-text-subtle);
  font-size: 0.75rem;
  line-height: 1rem;
  text-decoration: underline;
}

.link-button:hover {
  color: var(--color-text-strong);
}

/* 7. Buttons -------------------------------------------------------------- */

.button {
  flex: 1;
  padding: 0.75rem;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  line-height: 1.5rem;
  font-weight: 600;
  transition: background-color var(--transition);
}

.button--secondary {
  border: 1px solid var(--color-field-border);
  color: var(--color-text-strong);
}

.button--secondary:active {
  background: var(--color-pressed);
}

.button--primary {
  background: var(--color-brand);
  color: #fff;
}

.button--primary:active {
  background: var(--color-brand-pressed);
}

.button--danger {
  background: var(--color-danger);
  color: #fff;
}

.button--danger:active {
  background: var(--color-danger-pressed);
}