/*
 * Layout shell - Antenore Energia visual identity (V-04 / V-14)
 *
 * Covers document defaults, header/navbar, main container, footer and the
 * page-wide typographic rhythm. Consumes tokens from tokens.css only; no
 * raw hex values live here (see V-16 sweep).
 */

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

html {
    -webkit-text-size-adjust: 100%;
}

/*
 * Accessibility-first focus default: any interactive element that does
 * not define its own focus-visible treatment still gets the red-tinted
 * ring (WCAG 2.2 SC 2.4.7 / SC 2.4.13). Components.css overrides remove
 * the outline before replacing it with shadow-focus, so this rule only
 * kicks in for elements we haven't explicitly styled.
 */
:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Skip link - becomes visible once focused; lets keyboard users jump
 * straight to the main content without tabbing through the nav. */
.skip-link {
    position: absolute;
    top: -60px;
    left: var(--space-5);
    padding: var(--space-2) var(--space-5);
    background-color: var(--fg-default);
    color: var(--fg-on-accent);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-caption);
    letter-spacing: var(--letter-spacing-button);
    text-transform: uppercase;
    border-radius: var(--radius-pill);
    z-index: 1000;
    transition: top var(--duration-medium) var(--easing-default);
}

.skip-link:focus,
.skip-link:focus-visible {
    top: var(--space-3);
    text-decoration: none;
    color: var(--fg-on-accent);
    box-shadow: var(--shadow-focus);
}

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

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    line-height: var(--line-height-body);
    font-weight: var(--font-weight-regular);
    color: var(--fg-default);
    background-color: var(--bg-muted);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ---------------- Typography ---------------- */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-body);
    color: var(--fg-default);
    margin: 0 0 var(--space-4);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.01em;
}

/* Operator feedback (2026-04-17, S-032): the default heading scale was
 * tuned for a marketing landing page, not a dense CRM — 41px H1 / 35px
 * H2 made every card title dwarf its body content. Tightened via clamps
 * so typography reads proportional on both 1440p dashboards and tablet
 * viewports. */
h1 { font-size: clamp(26px, calc(16px + 1vw), 34px);  line-height: 1.15; }
h2 { font-size: clamp(18px, calc(13px + 0.45vw), 24px); line-height: 1.2;  margin-top: var(--space-5); margin-bottom: var(--space-3); }
h3 { font-size: clamp(16px, calc(13px + 0.3vw), 20px);  line-height: 1.25; }
h4 { font-size: var(--font-size-h4); line-height: var(--line-height-h4); }
h5 { font-size: var(--font-size-h5); line-height: var(--line-height-h5); }

.hero-heading {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: var(--font-weight-regular);
    font-size: var(--font-size-h1);
    line-height: var(--line-height-tight);
    color: var(--fg-default);
    letter-spacing: 0;
}

p { margin: 0 0 var(--space-4); }

a {
    color: var(--fg-accent);
    text-decoration: none;
    transition: color var(--duration-medium) var(--easing-default);
}

a:hover {
    color: var(--color-red-700);
    text-decoration: underline;
}

a:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
    border-radius: var(--radius-sm);
}

code, pre {
    font-family: var(--font-mono);
    font-size: var(--font-size-small);
}

pre {
    background: var(--bg-subtle);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: var(--space-3);
    overflow-x: auto;
}

/* ---------------- Application shell ---------------- */

header.app {
    background-color: var(--bg-default);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-5);
    height: 72px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-2);
}

header.app .brand {
    font-family: var(--font-body);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-label);
    text-transform: uppercase;
    font-size: var(--font-size-caption);
    color: var(--fg-default);
}

header.app nav {
    display: flex;
    gap: var(--space-1);
    margin-inline-start: var(--space-6);
    flex: 1;
    flex-wrap: wrap;
}

header.app nav a {
    position: relative;
    padding: var(--space-2) var(--space-4);
    color: var(--fg-muted);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-caption);
    letter-spacing: var(--letter-spacing-nav);
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    transition: color var(--duration-medium) var(--easing-default);
}

header.app nav a::after {
    content: "";
    position: absolute;
    left: var(--space-4);
    right: var(--space-4);
    bottom: calc(var(--space-1) * -1);
    height: 2px;
    background-color: var(--accent-primary);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--duration-medium) var(--easing-default);
}

header.app nav a:hover,
header.app nav a.active {
    color: var(--accent-primary);
    text-decoration: none;
}

header.app nav a:hover::after,
header.app nav a.active::after {
    transform: scaleX(1);
}

header.app nav a:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

header.app .user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--fg-muted);
    font-size: var(--font-size-caption);
}

header.app .user form { margin: 0; }

header.app .user button {
    background: transparent;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-pill);
    padding: var(--space-2) var(--space-4);
    cursor: pointer;
    color: var(--fg-default);
    font-family: inherit;
    font-size: var(--font-size-label);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-button);
    text-transform: uppercase;
    transition: color var(--duration-medium) var(--easing-default),
                border-color var(--duration-medium) var(--easing-default),
                background-color var(--duration-medium) var(--easing-default);
}

header.app .user button:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

header.app .user button:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

/* ---------------- User dropdown (Settings menu) ----------------
 * Relocated every low-frequency navigation entry (import, sync,
 * custom fields, jobs, backup) into an account-anchored dropdown
 * so the top bar only keeps Dashboard + Customers. Built on top
 * of native <details>/<summary> to stay JS-free and accessible.
 */

header.app .user-menu {
    position: relative;
}

header.app .user-menu > summary {
    list-style: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-pill);
    color: var(--fg-default);
    font-family: inherit;
    font-size: var(--font-size-label);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-button);
    text-transform: uppercase;
    transition: color var(--duration-medium) var(--easing-default),
                border-color var(--duration-medium) var(--easing-default);
}

header.app .user-menu > summary::-webkit-details-marker { display: none; }
header.app .user-menu > summary::marker { content: ""; }

header.app .user-menu > summary:hover,
header.app .user-menu[data-has-active="true"] > summary {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

header.app .user-menu > summary:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

header.app .user-menu-caret {
    font-size: 0.9em;
    line-height: 1;
    transition: transform var(--duration-medium) var(--easing-default);
}

header.app .user-menu[open] > summary .user-menu-caret {
    transform: rotate(180deg);
}

header.app .user-menu-panel {
    position: absolute;
    top: calc(100% + var(--space-2));
    inset-inline-end: 0;
    min-width: 260px;
    background-color: var(--bg-default);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-3);
    padding: var(--space-2);
    display: flex;
    flex-direction: column;
    gap: 2px;
    z-index: 150;
}

header.app .user-menu-heading {
    font-size: var(--font-size-caption);
    color: var(--fg-muted);
    letter-spacing: var(--letter-spacing-label);
    text-transform: uppercase;
    padding: var(--space-2) var(--space-3);
}

header.app .user-menu-panel a {
    display: block;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    color: var(--fg-default);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-medium);
    letter-spacing: normal;
    text-transform: none;
}

header.app .user-menu-panel a:hover,
header.app .user-menu-panel a:focus-visible,
header.app .user-menu-panel a.active {
    background-color: var(--bg-subtle);
    color: var(--accent-primary);
    text-decoration: none;
    outline: none;
}

header.app .user-menu-divider {
    height: 1px;
    background-color: var(--border-subtle);
    margin: var(--space-2) var(--space-2);
}

header.app .user-menu-form { margin: 0; }

header.app .user-menu-logout {
    width: 100%;
    text-align: start;
    background: transparent;
    border: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    color: var(--fg-default);
    font-family: inherit;
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-medium);
    letter-spacing: normal;
    text-transform: none;
    cursor: pointer;
}

header.app .user-menu-logout:hover,
header.app .user-menu-logout:focus-visible {
    background-color: var(--bg-subtle);
    color: var(--accent-primary);
    outline: none;
}

main {
    /* Operators routinely keep the CRM on a 1080p / 1440p monitor next to
     * a partner spreadsheet — capping the shell at 1200px wasted the right
     * third of the viewport and forced the customer table to ellipsise.
     * The fluid padding shrinks gracefully on narrower screens and the
     * 1480px ceiling keeps line-length readable on ultrawides. */
    padding: var(--space-fluid-md) clamp(var(--space-5), 3vw, var(--space-9));
    max-width: 1480px;
    margin: 0 auto;
    width: 100%;
}

main > section + section,
main > .stack > * + * {
    margin-top: var(--space-6);
}

footer.app {
    background-color: var(--bg-inverse);
    color: var(--fg-on-inverse);
    padding: var(--space-10) clamp(var(--space-5), 3vw, var(--space-9)) var(--space-7);
    font-size: var(--font-size-caption);
    text-align: center;
    letter-spacing: var(--letter-spacing-nav);
    margin-top: var(--space-fluid-lg);
}

footer.app a {
    color: var(--fg-on-inverse);
    text-decoration: underline;
}

/* ---------------- Page header pattern ---------------- */

.page-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-7) 0 var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--space-7);
}

.page-header h1 { margin: 0; }

.page-header .muted { margin: 0; color: var(--fg-muted); }

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-caption);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-nav);
    color: var(--fg-muted);
    align-self: flex-start;
}

.back-link:hover { color: var(--accent-primary); text-decoration: none; }

/* ---------------- Utilities ---------------- */

.muted { color: var(--fg-muted); }
.right { text-align: end; }
.actions { display: flex; gap: var(--space-2); justify-content: flex-end; margin-top: var(--space-4); flex-wrap: wrap; }

/* ---------------- Responsive ---------------- */

@media (max-width: 768px) {
    header.app {
        height: auto;
        padding: var(--space-4);
        flex-wrap: wrap;
    }
    header.app nav { margin-inline-start: 0; }
    main { padding: var(--space-5) var(--space-4); }
    h1 { font-size: var(--font-size-h2); }
    h2 { font-size: var(--font-size-h3); margin-top: var(--space-5); }
    .page-header { padding: var(--space-5) 0 var(--space-4); margin-bottom: var(--space-5); }
}