/* ==========================================================================
 * Rent Ready Web Design System v1.0.0 . shared shell
 *
 * Page-agnostic rules for the served Jinja pages: reset, type, container,
 * brand header, nav, buttons, messages, motion utilities.
 * Load order matters. tokens.css, then this, then the page file:
 *   <link href="/static/css/tokens.css"> <link href="/static/css/base.css">
 *   <link href="/static/css/upload.css">
 *
 * NOTE ON CLASS NAMES: upload.html and rubrics.html were authored separately
 * and use two vocabularies for the same buttons (.primary-btn vs .btn-primary)
 * and two spellings for the same message state (.errors vs .error). Inline JS
 * in both pages builds these names as string literals, and nothing tests
 * them, so renaming one silently breaks a page. Both spellings are declared
 * together below instead. Do not "tidy" them apart.
 * ========================================================================== */

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-text);
}

h1 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 1.875rem);
}

a {
  color: var(--color-link);
}

button {
  font-family: inherit;
}

/* Keyboard focus is always visible. Pointer focus is not decorated. */
:focus-visible {
  outline: 2px solid var(--color-cyan-500);
  outline-offset: 2px;
}

/* ---- Layout ------------------------------------------------------------ */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--section-pad) var(--container-pad);
}

@media (min-width: 640px) {
  .container {
    padding-left: var(--container-pad-sm);
    padding-right: var(--container-pad-sm);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: var(--section-pad-lg) var(--container-pad-lg);
  }
}

/* ---- Brand header and nav --------------------------------------------- */

.brand-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

/* Canonical wide wordmark, roughly 2:1. Never recolour it or change its
 * aspect ratio: see the logo README in the brand asset folder. */
.logo-mark img {
  display: block;
  width: 22vw;
  min-width: 132px;
  max-width: 152px;
  height: auto;
}

.nav-links {
  display: flex;
  gap: 8px;
  margin: 0 0 32px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0;
}

/* Tab-style nav. The active item carries the accent; the rule beneath it
 * encodes which page you are on, so no extra label is needed. */
.nav-links a {
  padding: 10px 4px;
  margin-right: 20px;
  text-decoration: none;
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: var(--text-sm);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard);
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-links a.active {
  color: var(--color-text);
  font-weight: 600;
  border-bottom-color: var(--color-cyan-500);
}

/* ---- Buttons -----------------------------------------------------------
 * 8px radius, bold label, 56px tall on mobile and 40px on desktop. The CTA
 * gets smaller on wider screens: 56px is a touch target, not a size ramp. */

.primary-btn,
.btn-primary,
.secondary-btn,
.btn-secondary,
.btn-danger,
.stop-batch-btn,
.add-check-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 56px;
  padding: 0 24px;
  border: none;
  border-radius: var(--radius-button);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

@media (min-width: 1024px) {
  .primary-btn,
  .btn-primary,
  .secondary-btn,
  .btn-secondary,
  .btn-danger,
  .stop-batch-btn,
  .add-check-btn {
    min-height: 40px;
  }
}

.primary-btn:active:not([disabled]),
.btn-primary:active:not([disabled]),
.secondary-btn:active:not([disabled]),
.btn-secondary:active:not([disabled]),
.btn-danger:active:not([disabled]),
.stop-batch-btn:active:not([disabled]) {
  transform: scale(0.97);
}

.primary-btn,
.btn-primary {
  background: var(--color-cyan-500);
  color: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

.primary-btn:hover:not([disabled]),
.btn-primary:hover:not([disabled]) {
  background: var(--color-accent-hover);
}

.primary-btn[disabled],
.btn-primary[disabled] {
  background: var(--color-navy-a10);
  color: var(--color-navy-a40);
  cursor: not-allowed;
  box-shadow: none;
}

/* Secondary. Two vocabularies that had drifted apart: upload styled it as a
 * cyan-outlined button, rubrics as a white button with a navy hairline.
 * The system specifies the cyan outline, so both resolve to that. */
.secondary-btn,
.btn-secondary {
  background: transparent;
  color: var(--color-cyan-800);
  border: 2px solid var(--color-cyan-500);
}

.secondary-btn:hover:not([disabled]),
.btn-secondary:hover:not([disabled]) {
  background: var(--color-cyan-tint-soft);
}

.secondary-btn:disabled,
.btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.secondary-btn[hidden],
.btn-secondary[hidden] {
  display: none;
}

/* Destructive. Coral is reserved for warnings and destructive actions and is
 * never decorative. The label is navy, not white: white on coral-500 is
 * about 2.6:1 and fails AA at every size. */
.btn-danger,
.stop-batch-btn {
  background: transparent;
  color: var(--color-navy-500);
  border: 1px solid var(--color-coral-500);
}

/* The fill lands on hover so a destructive action is legible at rest without
 * being the loudest element on the page. The label stays navy either way:
 * white on coral-500 is about 2.6:1 and fails AA at every size. */
.btn-danger:hover:not([disabled]),
.stop-batch-btn:hover:not([disabled]) {
  background: var(--color-coral-500);
}

.stop-batch-btn[hidden] {
  display: none;
}

/* ---- Messages ---------------------------------------------------------
 * upload.html emits "message errors", rubrics.html emits "message error".
 * Both are real. Navy text on a tinted fill, never white on color. */

.message {
  margin-bottom: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-button);
  border: 1px solid transparent;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.message.success {
  background: var(--color-cyan-tint);
  border-color: var(--color-cyan-500);
}

.message.error,
.message.errors {
  background: var(--color-coral-tint);
  border-color: var(--color-coral-500);
}

/* Informational text uses text-secondary (#4B5563, 7.5:1 on white). The
 * system's caption grey #9CA3AF is 2.54:1 and is not used for anything a
 * reader needs. */
.text-muted {
  color: var(--color-text-secondary);
}

.hint {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ---- Motion utilities -------------------------------------------------- */

.card-lift {
  transition: transform var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.card-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- Mobile ------------------------------------------------------------ */

@media (max-width: 640px) {
  .brand-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    overflow-x: auto;
  }
}