/* EGI Portal — Component primitives
 * --------------------------------------------------------------
 * Theme-aware: every component has explicit light + dark rules.
 * Consumes brand.css tokens; defines ZERO of its own colors,
 * spacing, or radii. If you find yourself reaching for a raw hex
 * here, the answer is to add it to brand.css first.
 *
 * Authority: BRAND_SPEC.md §7 (Component patterns).
 *
 * Load order: AFTER brand.css, BEFORE app.css.
 * -------------------------------------------------------------- */


/* ════════════════════════════════════════════════════════════════
 *  TYPOGRAPHY (consumes brand.css type-scale tokens)
 * ════════════════════════════════════════════════════════════════ */

body {
    font-family: var(--font-sans);
    font-size: var(--fs-body);
    line-height: var(--lh-body);
    font-weight: var(--fw-regular);
    color: var(--ink);
    background-color: var(--bg);
}

h1, .h1 {
    font-size: var(--fs-h1);
    line-height: var(--lh-h1);
    font-weight: var(--fw-bold);
    color: var(--ink-strong);
    letter-spacing: -0.01em;
}

h2, .h2 {
    font-size: var(--fs-h2);
    line-height: var(--lh-h2);
    font-weight: var(--fw-semibold);
    color: var(--ink-strong);
    letter-spacing: -0.01em;
}

h3, .h3 {
    font-size: var(--fs-h3);
    line-height: var(--lh-h3);
    font-weight: var(--fw-semibold);
    color: var(--ink-strong);
}

h4, .h4 {
    font-size: var(--fs-h4);
    line-height: var(--lh-h4);
    font-weight: var(--fw-semibold);
    color: var(--ink-strong);
}

.text-display {
    font-size: var(--fs-display);
    line-height: var(--lh-display);
    font-weight: var(--fw-bold);
    color: var(--ink-strong);
    letter-spacing: -0.02em;
}

.text-sm { font-size: var(--fs-sm); line-height: var(--lh-sm); }
.text-xs { font-size: var(--fs-xs); line-height: var(--lh-xs); }

.text-muted { color: var(--ink-muted); }
.text-strong { color: var(--ink-strong); }
.text-disabled { color: var(--ink-disabled); }

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

.overline {
    font-size: var(--fs-xs);
    line-height: var(--lh-xs);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-muted);
}

a {
    color: var(--link);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
    transition: color 150ms ease;
}

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

a:focus-visible {
    outline: 2px solid var(--teal-500);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

p {
    margin-block-end: var(--space-3);
}

p:last-child {
    margin-block-end: 0;
}

code,
kbd,
samp {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--bg-tint);
    color: var(--ink);
    padding: 0.125em 0.375em;
    border-radius: var(--radius-sm);
}


/* ════════════════════════════════════════════════════════════════
 *  BUTTONS (§7.1) — 5 variants × 3 sizes × 2 themes
 *
 *  Convention: <button class="btn btn-primary"> or
 *              <button class="btn btn-primary btn-lg">
 *  Sizes: btn-sm | btn-md (default, no class needed) | btn-lg
 * ════════════════════════════════════════════════════════════════ */

.btn {
    /* Box model */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 40px;
    padding-inline: var(--space-4);
    border: 1px solid transparent;
    border-radius: var(--radius-md);

    /* Type */
    font-family: var(--font-sans);
    font-size: var(--fs-body);
    line-height: 1;
    font-weight: var(--fw-semibold);
    white-space: nowrap;
    text-decoration: none;

    /* Behavior */
    cursor: pointer;
    user-select: none;
    transition: background-color 150ms ease,
                border-color 150ms ease,
                color 150ms ease,
                box-shadow 150ms ease,
                transform 100ms ease;
}

.btn:disabled,
.btn[aria-disabled="true"] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.btn:active:not(:disabled) {
    transform: translateY(1px);
}

/* Sizes */
.btn-sm {
    height: 32px;
    padding-inline: var(--space-3);
    font-size: var(--fs-sm);
}

.btn-lg {
    height: 48px;
    padding-inline: var(--space-5);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ── Variant: primary ────────────────────────────────────────── */
.btn-primary {
    background-color: var(--ink-strong);
    color: var(--bg);
    border-color: var(--ink-strong);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--navy-800);
    border-color: var(--navy-800);
}

[data-theme="dark"] .btn-primary {
    background-color: var(--teal-500);
    color: var(--navy-900);
    border-color: var(--teal-500);
}

[data-theme="dark"] .btn-primary:hover:not(:disabled) {
    background-color: var(--teal-400);
    border-color: var(--teal-400);
}

/* ── Variant: secondary ──────────────────────────────────────── */
.btn-secondary {
    background-color: var(--bg);
    color: var(--ink);
    border-color: var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-tint);
    border-color: var(--border-strong);
}

[data-theme="dark"] .btn-secondary {
    background-color: var(--bg-elevated);
    color: var(--ink);
    border-color: var(--border);
}

[data-theme="dark"] .btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-tint);
    border-color: var(--border-strong);
}

/* ── Variant: accent (marketing CTAs) ────────────────────────── */
.btn-accent {
    background-color: var(--teal-700);
    color: #FFFFFF;
    border-color: var(--teal-700);
}

.btn-accent:hover:not(:disabled) {
    background-color: var(--teal-800);
    border-color: var(--teal-800);
}

[data-theme="dark"] .btn-accent {
    background-color: var(--pink-400);
    color: var(--navy-900);
    border-color: var(--pink-400);
}

[data-theme="dark"] .btn-accent:hover:not(:disabled) {
    background-color: var(--pink-300);
    border-color: var(--pink-300);
}

/* ── Variant: ghost ──────────────────────────────────────────── */
.btn-ghost {
    background-color: transparent;
    color: var(--ink);
    border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--bg-tint);
}

[data-theme="dark"] .btn-ghost {
    color: var(--ink);
}

[data-theme="dark"] .btn-ghost:hover:not(:disabled) {
    background-color: var(--bg-elevated);
}

/* ── Variant: danger ─────────────────────────────────────────── */
.btn-danger {
    background-color: var(--pink-600);
    color: #FFFFFF;
    border-color: var(--pink-600);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--pink-700);
    border-color: var(--pink-700);
}

[data-theme="dark"] .btn-danger {
    background-color: var(--pink-500);
    color: #FFFFFF;
    border-color: var(--pink-500);
}

[data-theme="dark"] .btn-danger:hover:not(:disabled) {
    background-color: var(--pink-400);
    border-color: var(--pink-400);
    color: var(--navy-900);
}


/* ════════════════════════════════════════════════════════════════
 *  FORMS (§7.2)
 * ════════════════════════════════════════════════════════════════ */

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-block-end: var(--space-3);
}

.form-label {
    font-size: var(--fs-sm);
    line-height: var(--lh-sm);
    font-weight: var(--fw-semibold);
    color: var(--ink);
}

.form-label-required::after {
    content: '*';
    margin-inline-start: 0.25em;
    color: var(--pink-600);
}

[data-theme="dark"] .form-label-required::after {
    color: var(--pink-300);
}

.form-input,
.form-textarea,
.form-select {
    height: 40px;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-sans);
    font-size: var(--fs-body);
    line-height: var(--lh-body);
    color: var(--ink);
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color 150ms ease, box-shadow 150ms ease, background-color 150ms ease;
    width: 100%;
}

.form-textarea {
    height: auto;
    min-height: 88px;
    padding: var(--space-3);
    resize: vertical;
    line-height: var(--lh-body);
}

.form-select {
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
                      linear-gradient(135deg, currentColor 50%, transparent 50%);
    background-position: calc(100% - 18px) center, calc(100% - 13px) center;
    background-size: 5px 5px;
    background-repeat: no-repeat;
    padding-inline-end: var(--space-6);
    cursor: pointer;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--ink-disabled);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--teal-500);
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--teal-500);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
    background-color: var(--bg-tint);
    color: var(--ink-disabled);
    cursor: not-allowed;
}

[data-theme="dark"] .form-input,
[data-theme="dark"] .form-textarea,
[data-theme="dark"] .form-select {
    background-color: var(--bg-elevated);
    border-color: var(--border);
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-textarea:focus,
[data-theme="dark"] .form-select:focus {
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--teal-500);
}

.form-help {
    font-size: var(--fs-xs);
    line-height: var(--lh-xs);
    color: var(--ink-muted);
}

.form-error {
    font-size: var(--fs-xs);
    line-height: var(--lh-xs);
    font-weight: var(--fw-medium);
    color: var(--error);
}

[data-theme="dark"] .form-error {
    color: var(--error-fg);
}

/* Error state: red border, replaces help text */
.form-input.is-invalid,
.form-textarea.is-invalid,
.form-select.is-invalid {
    border-color: var(--error);
}

.form-input.is-invalid:focus,
.form-textarea.is-invalid:focus,
.form-select.is-invalid:focus {
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--error);
}

/* Checkbox & radio */
.form-checkbox,
.form-radio {
    width: 18px;
    height: 18px;
    accent-color: var(--teal-600);
    cursor: pointer;
}


/* ════════════════════════════════════════════════════════════════
 *  CARDS (§7.3)
 * ════════════════════════════════════════════════════════════════ */

.card {
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
}

.card-compact {
    padding: var(--space-4);
}

.card-interactive {
    cursor: pointer;
    transition: box-shadow 200ms ease, transform 200ms ease, border-color 200ms ease;
}

.card-interactive:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--border-strong);
}

[data-theme="dark"] .card {
    background-color: var(--bg-elevated);
    border-color: var(--border);
    /* shadow-sm token already swaps to outline+glow on dark via brand.css */
}

.card-title {
    font-size: var(--fs-h3);
    line-height: var(--lh-h3);
    font-weight: var(--fw-semibold);
    color: var(--ink-strong);
    margin-block-end: var(--space-2);
}

.card-subtitle {
    font-size: var(--fs-sm);
    line-height: var(--lh-sm);
    color: var(--ink-muted);
    margin-block-end: var(--space-4);
}


/* ════════════════════════════════════════════════════════════════
 *  TABLES (§7.4)
 * ════════════════════════════════════════════════════════════════ */

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--fs-sm);
    line-height: var(--lh-sm);
}

.table thead th {
    background-color: var(--bg-tint);
    color: var(--ink);
    font-weight: var(--fw-semibold);
    text-align: left;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border);
}

.table tbody td {
    color: var(--ink);
    padding: 10px var(--space-4);
    border-bottom: 1px solid var(--navy-100);
}

[data-theme="dark"] .table tbody td {
    border-bottom-color: var(--navy-700);
}

.table-striped tbody tr:nth-child(even) {
    background-color: rgba(14, 39, 57, 0.025);
}

[data-theme="dark"] .table-striped tbody tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.025);
}

.table tbody tr:hover {
    background-color: var(--teal-100);
}

[data-theme="dark"] .table tbody tr:hover {
    background-color: var(--navy-700);
}

.table tbody tr.is-selected {
    background-color: var(--teal-100);
    border-left: 2px solid var(--teal-500);
}

[data-theme="dark"] .table tbody tr.is-selected {
    background-color: var(--navy-700);
    border-left-color: var(--teal-500);
}

.table .col-numeric {
    text-align: right;
    font-family: var(--font-mono);
    font-weight: var(--fw-medium);
}


/* ════════════════════════════════════════════════════════════════
 *  STATUS PILLS (§7.5) — 5 variants × 2 themes
 * ════════════════════════════════════════════════════════════════ */

.pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    height: 24px;
    padding-inline: var(--space-2);
    border-radius: var(--radius-pill);
    font-size: var(--fs-xs);
    line-height: 1;
    font-weight: var(--fw-semibold);
    white-space: nowrap;
}

.pill-success { background-color: var(--success-bg); color: var(--success-fg); }
.pill-warning { background-color: var(--warning-bg); color: var(--warning-fg); }
.pill-error   { background-color: var(--error-bg);   color: var(--error-fg);   }
.pill-info    { background-color: var(--info-bg);    color: var(--info-fg);    }
.pill-new     { background-color: var(--highlight-bg); color: var(--highlight-fg); }

/* Neutral fallback */
.pill-neutral {
    background-color: var(--bg-tint);
    color: var(--ink-muted);
}

[data-theme="dark"] .pill-neutral {
    background-color: var(--bg-elevated);
    color: var(--ink-muted);
}


/* ════════════════════════════════════════════════════════════════
 *  NAVIGATION (§7.6)
 * ════════════════════════════════════════════════════════════════ */

.nav-top {
    display: flex;
    align-items: center;
    height: 64px;
    padding-inline: var(--space-5);
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    gap: var(--space-5);
}

[data-theme="dark"] .nav-top {
    background-color: var(--bg);
    border-bottom-color: var(--border);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.nav-brand img {
    height: 36px;
    width: auto;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-spacer { flex: 1; }

.nav-item {
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding-inline: var(--space-3);
    color: var(--ink-muted);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: color 150ms ease, background-color 150ms ease;
    position: relative;
}

.nav-item:hover {
    color: var(--ink-strong);
    background-color: var(--bg-tint);
}

.nav-item.is-active {
    color: var(--ink-strong);
    font-weight: var(--fw-semibold);
}

.nav-item.is-active::after {
    content: '';
    position: absolute;
    left: var(--space-3);
    right: var(--space-3);
    bottom: -1px;
    height: 2px;
    background-color: var(--ink-strong);
}

[data-theme="dark"] .nav-item.is-active::after {
    background-color: var(--teal-400);
}

/* Dashboard left rail (§7.6) — navy-900 always, regardless of theme */
.nav-rail {
    width: 240px;
    height: 100vh;
    background-color: var(--navy-900);
    color: #FFFFFF;
    padding: var(--space-5) var(--space-3);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.nav-rail-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    color: var(--navy-100);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    transition: background-color 150ms ease, color 150ms ease;
}

.nav-rail-item:hover {
    color: #FFFFFF;
    background-color: var(--navy-800);
}

.nav-rail-item.is-active {
    color: #FFFFFF;
    background-color: var(--navy-800);
    border-left: 2px solid var(--teal-400);
    padding-left: calc(var(--space-3) - 2px);
}


/* ════════════════════════════════════════════════════════════════
 *  THEME TOGGLE (§4.3)
 *
 *  Markup convention:
 *    <button class="theme-toggle" data-theme-toggle aria-label="Toggle theme">
 *      <svg class="theme-toggle-sun" ...>...</svg>
 *      <svg class="theme-toggle-moon" ...>...</svg>
 *    </button>
 *
 *  JS toggles data-theme on <html>; CSS shows the icon for the
 *  CURRENT theme (sun = light active, moon = dark active).
 * ════════════════════════════════════════════════════════════════ */

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background-color: transparent;
    color: var(--ink-muted);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color 150ms ease, color 150ms ease;
}

.theme-toggle:hover {
    color: var(--ink-strong);
    background-color: var(--bg-tint);
}

.theme-toggle:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    stroke-width: 1.5;
    stroke: currentColor;
    fill: none;
}

.theme-toggle-sun  { display: block; }
.theme-toggle-moon { display: none; }

[data-theme="dark"] .theme-toggle-sun  { display: none; }
[data-theme="dark"] .theme-toggle-moon { display: block; }


/* ════════════════════════════════════════════════════════════════
 *  CONTAINER & LAYOUT UTILITIES (§6.4)
 * ════════════════════════════════════════════════════════════════ */

.container {
    width: 100%;
    margin-inline: auto;
    padding-inline: var(--space-5);
}

@media (min-width: 768px) {
    .container { max-width: var(--container-md); }
}

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

@media (min-width: 1280px) {
    .container { max-width: var(--container-xl); }
}

@media (min-width: 1536px) {
    .container { max-width: var(--container-2xl); }
}


/* ════════════════════════════════════════════════════════════════
 *  ACCESSIBILITY UTILITIES
 * ════════════════════════════════════════════════════════════════ */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -100px;
    left: var(--space-4);
    padding: var(--space-2) var(--space-4);
    background-color: var(--ink-strong);
    color: var(--bg);
    font-weight: var(--fw-semibold);
    border-radius: var(--radius-sm);
    z-index: 1000;
    transition: top 150ms ease;
}

.skip-link:focus {
    top: var(--space-4);
}


/* ════════════════════════════════════════════════════════════════
 *  BACKWARD-COMPAT SHIMS (Phase 4 removes after migration)
 *  Allow the migration to land surface-by-surface without each
 *  surface temporarily breaking. Each shim is a one-line alias.
 * ════════════════════════════════════════════════════════════════ */

/* Legacy survey/assistant button class names */
.btn-primary--legacy { /* alias */ }   /* phase 4 sweep removes */