/* ============================================================================
   CRM Toolkit - Design System
   Style: data-dense-dashboard  |  Type: B2B tool / operations console
   Chosen for low accessibility risk and maximum data legibility: this product's
   primary action is irreversible, so clarity outranks decoration.
   ========================================================================== */

/* --- Tokens --------------------------------------------------------------- */
:root {
    /* Brand */
    --color-primary: #2563EB;
    --color-primary-hover: #1D4ED8;
    --color-on-primary: #FFFFFF;
    --color-secondary: #3B82F6;
    --color-accent: #EA580C;

    /* Surfaces */
    --color-background: #F8FAFC;
    --color-foreground: #1E293B;
    --color-card: #FFFFFF;
    --color-card-foreground: #1E293B;
    --color-muted: #E9EFF8;
    --color-muted-foreground: #475569;
    --color-border: #E2E8F0;
    --color-border-strong: #CBD5E1;

    /* Status */
    --color-destructive: #DC2626;
    --color-destructive-hover: #B91C1C;
    --color-on-destructive: #FFFFFF;
    --color-success: #15803D;
    --color-success-bg: #F0FDF4;
    --color-warning: #B45309;
    --color-warning-bg: #FFFBEB;
    --color-danger-bg: #FEF2F2;
    --color-info-bg: #EFF6FF;

    --color-ring: #2563EB;

    /* Density (data-dense-dashboard) */
    --sidebar-width: 248px;
    --header-height: 56px;
    --card-padding: 20px;
    --grid-gap: 16px;
    --table-row-height: 44px;
    --radius: 10px;
    --radius-sm: 6px;

    /* Type */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
    --font-size-small: 12px;
    --font-size-base: 14px;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
    --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);
    --shadow-lg: 0 10px 25px rgba(15, 23, 42, .10);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-background: #0F172A;
        --color-foreground: #E2E8F0;
        --color-card: #1E293B;
        --color-card-foreground: #E2E8F0;
        --color-muted: #334155;
        --color-muted-foreground: #94A3B8;
        --color-border: #334155;
        --color-border-strong: #475569;
        --color-primary: #3B82F6;
        --color-primary-hover: #60A5FA;
        --color-destructive: #EF4444;
        --color-destructive-hover: #F87171;
        --color-success: #4ADE80;
        --color-success-bg: #052E16;
        --color-warning: #FCD34D;
        --color-warning-bg: #422006;
        --color-danger-bg: #450A0A;
        --color-info-bg: #172554;
        --shadow: 0 1px 3px rgba(0, 0, 0, .4);
        --shadow-lg: 0 10px 25px rgba(0, 0, 0, .5);
    }
}

:root[data-theme="dark"] {
    --color-background: #0F172A;
    --color-foreground: #E2E8F0;
    --color-card: #1E293B;
    --color-card-foreground: #E2E8F0;
    --color-muted: #334155;
    --color-muted-foreground: #94A3B8;
    --color-border: #334155;
    --color-border-strong: #475569;
    --color-primary: #3B82F6;
    --color-primary-hover: #60A5FA;
    --color-destructive: #EF4444;
    --color-destructive-hover: #F87171;
    --color-success: #4ADE80;
    --color-success-bg: #052E16;
    --color-warning: #FCD34D;
    --color-warning-bg: #422006;
    --color-danger-bg: #450A0A;
    --color-info-bg: #172554;
    --shadow: 0 1px 3px rgba(0, 0, 0, .4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, .5);
}

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

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

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.55;
    color: var(--color-foreground);
    background: var(--color-background);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.25; text-wrap: balance; }
h1 { font-size: 22px; }
h2 { font-size: 17px; }
h3 { font-size: 15px; }
p  { margin: 0 0 12px; }
a  { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
    outline: 2px solid var(--color-ring);
    outline-offset: 2px;
    border-radius: 3px;
}

.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; left: 8px; top: -60px; z-index: 200;
    background: var(--color-primary); color: var(--color-on-primary);
    padding: 10px 16px; border-radius: var(--radius-sm); transition: top .15s ease;
}
.skip-link:focus { top: 8px; }

/* --- App shell ------------------------------------------------------------ */
.app { display: flex; min-height: 100vh; }

.sidebar {
    position: fixed; inset: 0 auto 0 0; z-index: 60;
    width: var(--sidebar-width);
    display: flex; flex-direction: column;
    background: var(--color-card);
    border-right: 1px solid var(--color-border);
    transform: translateX(-100%);
    transition: transform .25s ease;
}
.sidebar.is-open { transform: translateX(0); }

@media (min-width: 1024px) {
    .sidebar { transform: translateX(0); }
    .main { margin-left: var(--sidebar-width); }
}

.sidebar__brand {
    display: flex; align-items: center; gap: 10px;
    height: var(--header-height); padding: 0 16px; flex-shrink: 0;
    border-bottom: 1px solid var(--color-border);
    font-weight: 700; font-size: 15px; color: var(--color-foreground);
}
.sidebar__brand:hover { text-decoration: none; }
.sidebar__mark {
    display: grid; place-items: center;
    width: 28px; height: 28px; border-radius: var(--radius-sm);
    background: var(--color-primary); color: #fff; flex-shrink: 0;
}

.sidebar__nav { flex: 1; overflow-y: auto; padding: 12px 10px; }
.sidebar__group + .sidebar__group { margin-top: 18px; }
.sidebar__label {
    padding: 0 8px 6px; font-size: 11px; font-weight: 600; letter-spacing: .06em;
    text-transform: uppercase; color: var(--color-muted-foreground);
}

.nav-item {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 10px; margin-bottom: 2px;
    border-radius: var(--radius-sm);
    color: var(--color-foreground); font-weight: 500;
    cursor: pointer; transition: background .15s ease, color .15s ease;
}
.nav-item:hover { background: var(--color-muted); text-decoration: none; }
.nav-item[aria-current="page"] { background: var(--color-info-bg); color: var(--color-primary); font-weight: 600; }
.nav-item svg { flex-shrink: 0; }
.nav-item__badge {
    margin-left: auto; font-size: 10px; font-weight: 600;
    padding: 2px 6px; border-radius: 99px;
    background: var(--color-muted); color: var(--color-muted-foreground);
    white-space: nowrap;
}

.sidebar__footer { border-top: 1px solid var(--color-border); padding: 10px; flex-shrink: 0; }

.user-chip { display: flex; align-items: center; gap: 10px; padding: 6px 8px; }
.avatar {
    display: grid; place-items: center; flex-shrink: 0;
    width: 32px; height: 32px; border-radius: 99px;
    background: var(--color-primary); color: #fff; font-weight: 600; font-size: 13px;
}
.user-chip__meta { min-width: 0; }
.user-chip__name { font-weight: 600; font-size: 13px; }
.user-chip__mail {
    font-size: var(--font-size-small); color: var(--color-muted-foreground);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
    position: sticky; top: 0; z-index: 40;
    display: flex; align-items: center; gap: 12px;
    height: var(--header-height); padding: 0 16px;
    background: var(--color-card); border-bottom: 1px solid var(--color-border);
}
.topbar__title { font-size: 15px; font-weight: 600; }
.topbar__spacer { margin-left: auto; }

.page { padding: 24px 16px 48px; }
.page__inner { max-width: 1280px; margin: 0 auto; }
@media (min-width: 768px) { .page { padding: 28px 24px 56px; } }

.page-head { margin-bottom: 20px; }
.page-head__row { display: flex; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.page-head__row .btn { flex-shrink: 0; }
.page-head p { color: var(--color-muted-foreground); margin: 6px 0 0; max-width: 68ch; }

.backdrop {
    position: fixed; inset: 0; z-index: 50;
    background: rgba(15, 23, 42, .5);
}
@media (min-width: 1024px) { .backdrop { display: none !important; } }

/* --- Cards ---------------------------------------------------------------- */
.card {
    background: var(--color-card); color: var(--color-card-foreground);
    border: 1px solid var(--color-border); border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.card__head {
    display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
    padding: 14px var(--card-padding);
    border-bottom: 1px solid var(--color-border);
}
.card__head h2 { font-size: 15px; }
.card__head .btn { margin-left: auto; }
.card__body { padding: var(--card-padding); }
.card__foot {
    padding: 12px var(--card-padding);
    border-top: 1px solid var(--color-border);
    background: var(--color-background);
    border-radius: 0 0 var(--radius) var(--radius);
}

.grid { display: grid; gap: var(--grid-gap); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.stack { display: grid; gap: var(--grid-gap); }

/* --- Stat tiles ----------------------------------------------------------- */
.stat { padding: 16px; }
.stat__label {
    font-size: var(--font-size-small); font-weight: 600; letter-spacing: .04em;
    text-transform: uppercase; color: var(--color-muted-foreground);
}
.stat__value { font-size: 26px; font-weight: 700; line-height: 1.15; margin-top: 6px; font-variant-numeric: tabular-nums; }
.stat__hint { font-size: var(--font-size-small); color: var(--color-muted-foreground); margin-top: 2px; }

/* --- Buttons -------------------------------------------------------------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 9px 16px; border: 1px solid transparent; border-radius: var(--radius-sm);
    font-family: inherit; font-size: var(--font-size-base); font-weight: 600; line-height: 1.2;
    cursor: pointer; white-space: nowrap;
    transition: background-color .15s ease, border-color .15s ease, color .15s ease, opacity .15s ease;
}
.btn:hover { text-decoration: none; }
.btn:disabled, .btn[disabled] { opacity: .5; cursor: not-allowed; }

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

.btn--secondary { background: var(--color-card); color: var(--color-foreground); border-color: var(--color-border-strong); }
.btn--secondary:not(:disabled):hover { background: var(--color-muted); }

.btn--danger { background: var(--color-destructive); color: var(--color-on-destructive); }
.btn--danger:not(:disabled):hover { background: var(--color-destructive-hover); }

.btn--ghost { background: transparent; color: var(--color-muted-foreground); }
.btn--ghost:not(:disabled):hover { background: var(--color-muted); color: var(--color-foreground); }

.btn--sm { padding: 6px 10px; font-size: 13px; }
.btn--block { width: 100%; }

.icon-btn {
    display: inline-grid; place-items: center;
    width: 36px; height: 36px; padding: 0;
    background: transparent; border: 1px solid transparent; border-radius: var(--radius-sm);
    color: var(--color-muted-foreground); cursor: pointer;
    transition: background .15s ease, color .15s ease;
}
.icon-btn:hover { background: var(--color-muted); color: var(--color-foreground); }
@media (min-width: 1024px) { .icon-btn--menu { display: none; } }

.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

/* --- Forms ---------------------------------------------------------------- */
.field { margin-bottom: 16px; }
.field__label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 6px; }
.field__hint { font-size: var(--font-size-small); color: var(--color-muted-foreground); margin-top: 6px; }
.field__error { font-size: var(--font-size-small); color: var(--color-destructive); margin-top: 6px; font-weight: 500; }
.required { color: var(--color-destructive); }

.input, .select, .textarea {
    display: block; width: 100%;
    padding: 9px 12px;
    font-family: inherit; font-size: var(--font-size-base); color: var(--color-foreground);
    background: var(--color-card);
    border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm);
    transition: border-color .15s ease, box-shadow .15s ease;
}
.input::placeholder, .textarea::placeholder { color: var(--color-muted-foreground); opacity: .8; }
.input:focus, .select:focus, .textarea:focus {
    outline: none; border-color: var(--color-ring);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-ring) 22%, transparent);
}
.input[aria-invalid="true"] { border-color: var(--color-destructive); }
.input--mono { font-family: var(--font-mono); font-size: 13px; }

.input-group { display: flex; gap: 8px; }
.input-group .input { flex: 1; min-width: 0; }

.checkbox { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.checkbox input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--color-primary); cursor: pointer; margin: 0; flex-shrink: 0; }

/* --- Alerts --------------------------------------------------------------- */
.alert {
    display: flex; gap: 10px; align-items: flex-start;
    padding: 12px 14px; border-radius: var(--radius-sm);
    border: 1px solid transparent; margin-bottom: 16px; font-size: 13px;
}
.alert svg { flex-shrink: 0; margin-top: 1px; }
.alert--error   { background: var(--color-danger-bg);  border-color: var(--color-destructive); color: var(--color-destructive); }
.alert--success { background: var(--color-success-bg); border-color: var(--color-success);     color: var(--color-success); }
.alert--warning { background: var(--color-warning-bg); border-color: var(--color-warning);     color: var(--color-warning); }
.alert--info    { background: var(--color-info-bg);    border-color: var(--color-primary);     color: var(--color-primary); }
.alert strong { display: block; margin-bottom: 2px; }

/* --- Badges --------------------------------------------------------------- */
.badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 8px; border-radius: 99px;
    font-size: 11px; font-weight: 600; white-space: nowrap;
    background: var(--color-muted); color: var(--color-muted-foreground);
}
.badge--success { background: var(--color-success-bg); color: var(--color-success); }
.badge--danger  { background: var(--color-danger-bg);  color: var(--color-destructive); }
.badge--warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge--info    { background: var(--color-info-bg);    color: var(--color-primary); }
.badge__dot { width: 6px; height: 6px; border-radius: 99px; background: currentColor; flex-shrink: 0; }

/* --- Tables --------------------------------------------------------------- */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--color-border); }
.table th {
    position: sticky; top: 0; z-index: 1;
    background: var(--color-background);
    font-size: 11px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase;
    color: var(--color-muted-foreground); white-space: nowrap;
}
.table tbody tr { height: var(--table-row-height); transition: background .12s ease; }
.table tbody tr:hover { background: var(--color-muted); }
.table tbody tr:last-child td { border-bottom: 0; }
.table td.num { font-variant-numeric: tabular-nums; }
.table .muted { color: var(--color-muted-foreground); }

/* --- Empty state ---------------------------------------------------------- */
.empty { text-align: center; padding: 40px 24px; }
.empty__icon {
    display: grid; place-items: center; margin: 0 auto 14px;
    width: 48px; height: 48px; border-radius: 12px;
    background: var(--color-muted); color: var(--color-muted-foreground);
}
.empty h3 { margin-bottom: 6px; }
.empty p { color: var(--color-muted-foreground); max-width: 46ch; margin: 0 auto 16px; }

/* --- Auth pages ----------------------------------------------------------- */
.auth {
    min-height: 100vh; display: grid; place-items: center;
    padding: 24px 16px; background: var(--color-background);
}
.auth__card { width: 100%; max-width: 420px; }
.auth__brand {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    margin-bottom: 20px; font-size: 17px; font-weight: 700; color: var(--color-foreground);
}
.auth__brand:hover { text-decoration: none; }
.auth__head { text-align: center; margin-bottom: 20px; }
.auth__head p { color: var(--color-muted-foreground); margin: 6px 0 0; font-size: 13px; }
.auth__foot {
    text-align: center; margin-top: 18px; font-size: 13px;
    color: var(--color-muted-foreground);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 420px) { .form-row { grid-template-columns: 1fr; } }

/* --- Tool: selectable cards & rows ---------------------------------------- */
.mode-card {
    font-family: inherit; font-size: inherit; color: inherit;
    border: 1px solid var(--color-border); border-radius: var(--radius);
    transition: border-color .15s ease, background-color .15s ease;
}
.mode-card:hover { border-color: var(--color-primary); }
.mode-card.is-selected {
    border-color: var(--color-primary);
    background: var(--color-info-bg) !important;
    box-shadow: inset 0 0 0 1px var(--color-primary);
}

.target-row {
    padding: 10px 12px;
    border: 1px solid var(--color-border); border-radius: var(--radius-sm);
    cursor: pointer;
    transition: border-color .15s ease, background-color .15s ease;
}
.target-row:hover { background: var(--color-muted); border-color: var(--color-border-strong); }
.target-row.is-selected {
    border-color: var(--color-primary);
    background: var(--color-info-bg);
    box-shadow: inset 0 0 0 1px var(--color-primary);
}

.data-row {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    padding: 9px 20px;
    border-bottom: 1px solid var(--color-border);
}
.data-row:last-child { border-bottom: 0; }
.data-row:hover { background: var(--color-muted); }

/* --- Tool: activity log --------------------------------------------------- */
.log-entry { display: flex; gap: 10px; padding: 3px 0; line-height: 1.5; }
.log-entry__time { color: var(--color-muted-foreground); flex-shrink: 0; }
.log-entry--error { color: var(--color-destructive); }
#log-container:empty::before {
    content: 'Nothing yet. Actions you take will be logged here.';
    color: var(--color-muted-foreground);
}

/* --- Destructive confirmation dialog -------------------------------------- */
.modal {
    position: fixed; inset: 0; z-index: 100;
    display: grid; place-items: center;
    padding: 20px;
    background: rgba(15, 23, 42, .6);
}
.modal__panel {
    width: 100%; max-width: 460px;
    background: var(--color-card); color: var(--color-card-foreground);
    border: 1px solid var(--color-border); border-radius: 14px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}
.modal__head {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 20px 20px 0;
}
.modal__icon {
    display: grid; place-items: center; flex-shrink: 0;
    width: 40px; height: 40px; border-radius: 10px;
    background: var(--color-danger-bg); color: var(--color-destructive);
}
.modal__head h2 { font-size: 17px; }
.modal__body { padding: 16px 20px 20px; }

/* The target being destroyed - the part the reader must not misread. */
.modal__target {
    border: 1px solid var(--color-border); border-radius: var(--radius-sm);
    background: var(--color-background);
    padding: 14px 16px; margin-bottom: 16px;
}
.modal__row { display: flex; align-items: baseline; gap: 10px; }
.modal__row + .modal__row { margin-top: 8px; }
.modal__key {
    flex-shrink: 0; width: 68px;
    font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
    color: var(--color-muted-foreground);
}
.modal__name {
    font-size: 15px; font-weight: 700; color: var(--color-foreground);
    word-break: break-word;
}
.modal__id {
    font-family: var(--font-mono); font-size: 13px; font-weight: 600;
    background: var(--color-muted); color: var(--color-foreground);
    padding: 1px 7px; border-radius: 4px;
}
.modal__count {
    font-size: 22px; font-weight: 800; line-height: 1.1;
    color: var(--color-destructive); font-variant-numeric: tabular-nums;
}
.modal__count small { font-size: 12px; font-weight: 600; color: var(--color-muted-foreground); }

.modal__warning {
    display: flex; gap: 10px; align-items: flex-start;
    font-size: 13px; color: var(--color-destructive);
    background: var(--color-danger-bg);
    border: 1px solid var(--color-destructive); border-radius: var(--radius-sm);
    padding: 12px 14px;
}
.modal__warning svg { flex-shrink: 0; margin-top: 1px; }
.modal__foot {
    display: flex; gap: 10px; justify-content: flex-end;
    padding: 14px 20px; border-top: 1px solid var(--color-border);
    background: var(--color-background);
}

/* --- Utilities ------------------------------------------------------------ */
.hidden { display: none !important; }
.muted { color: var(--color-muted-foreground); }
.small { font-size: var(--font-size-small); }
.mono { font-family: var(--font-mono); }
.nowrap { white-space: nowrap; }
.mt-0 { margin-top: 0; } .mt-2 { margin-top: 8px; } .mt-3 { margin-top: 12px; } .mt-4 { margin-top: 16px; }
.mb-0 { margin-bottom: 0; } .mb-3 { margin-bottom: 12px; } .mb-4 { margin-bottom: 16px; }
.flex { display: flex; } .items-center { align-items: center; } .justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; } .gap-3 { gap: 12px; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* --- Motion --------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
}