/*
 * Enhancements layer (April 2026 product/design pass).
 *
 * Tokens, components, and utilities introduced after the main
 * `app.css` was authored. Loaded after `app.css` and `dark-mode.css`
 * so it can refine color tokens and component styles without
 * touching the legacy stylesheet.
 */

:root {
    /* Unified semantic severity scale (#7).
     * Hue separation tuned for colorblind friendliness:
     * red (critical) -> orange (high) -> yellow (medium) -> blue (low) -> gray (info).
     * Always paired with a label or icon for redundancy. */
    --sev-critical:        #dc2626;
    --sev-critical-soft:   rgba(220, 38, 38, 0.15);
    --sev-high:            #ea580c;
    --sev-high-soft:       rgba(234, 88, 12, 0.15);
    --sev-medium:          #eab308;
    --sev-medium-soft:     rgba(234, 179, 8, 0.18);
    --sev-low:             #2563eb;
    --sev-low-soft:        rgba(37, 99, 235, 0.18);
    --sev-info:            #64748b;
    --sev-info-soft:       rgba(100, 116, 139, 0.18);

    /* State tokens (#7). */
    --state-good:          #16a34a;
    --state-good-soft:     rgba(22, 163, 74, 0.16);
    --state-warn:          #d97706;
    --state-warn-soft:     rgba(217, 119, 6, 0.18);
    --state-bad:           #dc2626;
    --state-bad-soft:      rgba(220, 38, 38, 0.18);
}

[data-theme="light"] {
    --sev-medium:          #ca8a04;
    --sev-info:            #475569;
}

/* -----------------------------------------------------------------
 * #4 Lucide-based icon system
 * Use as: <svg class="ic"><use href="#ic-foo"/></svg>
 * Sizes: .ic (1em), .ic-sm (0.875em), .ic-lg (1.25em).
 * ----------------------------------------------------------------- */
.ic, .ic-sm, .ic-lg {
    display: inline-block;
    vertical-align: -0.125em;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.ic { width: 1em; height: 1em; }
.ic-sm { width: 0.875em; height: 0.875em; }
.ic-lg { width: 1.25em; height: 1.25em; }

/* -----------------------------------------------------------------
 * #7 Severity pills, dots, and bars (uniform, redundant cues)
 * ----------------------------------------------------------------- */
.sev-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.18rem 0.55rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    line-height: 1.4;
    border: 1px solid transparent;
}
.sev-pill::before {
    content: '';
    width: 0.55em;
    height: 0.55em;
    border-radius: 50%;
    background: currentColor;
    flex: 0 0 auto;
}
.sev-pill--critical { color: var(--sev-critical); background: var(--sev-critical-soft); border-color: color-mix(in srgb, var(--sev-critical) 35%, transparent); }
.sev-pill--high     { color: var(--sev-high);     background: var(--sev-high-soft);     border-color: color-mix(in srgb, var(--sev-high) 35%, transparent); }
.sev-pill--medium   { color: var(--sev-medium);   background: var(--sev-medium-soft);   border-color: color-mix(in srgb, var(--sev-medium) 40%, transparent); }
.sev-pill--low      { color: var(--sev-low);      background: var(--sev-low-soft);      border-color: color-mix(in srgb, var(--sev-low) 35%, transparent); }
.sev-pill--info     { color: var(--sev-info);     background: var(--sev-info-soft);     border-color: color-mix(in srgb, var(--sev-info) 35%, transparent); }

.severity-fill-orange { background: linear-gradient(90deg, #ea580c, #f97316); }
.severity-fill-amber  { background: linear-gradient(90deg, #eab308, #facc15); }

/* -----------------------------------------------------------------
 * #11 Trust signal chips (header / topbar)
 * ----------------------------------------------------------------- */
.trust-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.85rem;
}
.trust-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--panel) 80%, transparent);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.74rem;
    line-height: 1.4;
    text-decoration: none;
}
.trust-chip:hover { color: var(--ink); border-color: var(--accent); }
.trust-chip strong { color: var(--ink); font-weight: 600; }
.trust-chip-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--state-good);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--state-good) 25%, transparent);
}
.trust-chip-dot--warn { background: var(--state-warn); box-shadow: 0 0 0 3px color-mix(in srgb, var(--state-warn) 25%, transparent); }
.trust-chip-dot--bad  { background: var(--state-bad);  box-shadow: 0 0 0 3px color-mix(in srgb, var(--state-bad) 25%, transparent); }

/* -----------------------------------------------------------------
 * #12 Skeleton loader (perceptual performance)
 * ----------------------------------------------------------------- */
.skeleton {
    display: block;
    background: linear-gradient(
        90deg,
        color-mix(in srgb, var(--line) 40%, transparent) 0%,
        color-mix(in srgb, var(--line) 70%, transparent) 50%,
        color-mix(in srgb, var(--line) 40%, transparent) 100%
    );
    background-size: 200% 100%;
    border-radius: 6px;
    animation: skeleton-shimmer 1.4s ease-in-out infinite;
}
.skeleton-line { height: 0.85rem; margin: 0.4rem 0; }
.skeleton-line.w-25 { width: 25%; }
.skeleton-line.w-50 { width: 50%; }
.skeleton-line.w-75 { width: 75%; }
.skeleton-block { height: 7rem; }
@keyframes skeleton-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
@media (prefers-reduced-motion: reduce) {
    .skeleton { animation: none; opacity: 0.5; }
}
.deferred-panel[data-deferred="loading"] .deferred-content { display: none; }
.deferred-panel[data-deferred="loaded"]  .deferred-skeleton { display: none; }

/* -----------------------------------------------------------------
 * #6 Empty state component
 * ----------------------------------------------------------------- */
.empty-state-v2 {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2.4rem 1.2rem;
    gap: 0.7rem;
    color: var(--muted);
}
.empty-state-v2 .empty-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--panel-2);
    border: 1px dashed var(--line);
    color: var(--accent-strong);
}
.empty-state-v2 .empty-icon .ic { width: 1.4rem; height: 1.4rem; }
.empty-state-v2 h3 {
    margin: 0;
    font-size: 1.05rem;
    color: var(--ink);
    font-weight: 600;
}
.empty-state-v2 p {
    margin: 0;
    max-width: 28rem;
    font-size: 0.86rem;
    line-height: 1.5;
}
.empty-state-v2 .empty-actions {
    display: flex;
    gap: 0.6rem;
    margin-top: 0.4rem;
    flex-wrap: wrap;
    justify-content: center;
}
.empty-state-v2 .empty-actions .ghost,
.empty-state-v2 .empty-actions .button-link {
    font-size: 0.85rem;
}

/* -----------------------------------------------------------------
 * #2 Today's signal hero
 * ----------------------------------------------------------------- */
.signal-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1.2rem;
    align-items: center;
    padding: 1.4rem 1.6rem;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--panel) 92%, transparent),
        color-mix(in srgb, var(--panel-2) 92%, transparent));
    margin-bottom: 1rem;
    position: relative;
    overflow: hidden;
}
.signal-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 0% 0%,
        color-mix(in srgb, var(--signal-color, var(--accent)) 28%, transparent) 0%,
        transparent 55%);
    pointer-events: none;
}
.signal-hero__body { position: relative; z-index: 1; }
.signal-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--signal-color, var(--accent-strong));
    font-weight: 600;
    margin-bottom: 0.4rem;
}
.signal-hero__eyebrow::before {
    content: '';
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 0 4px color-mix(in srgb, currentColor 20%, transparent);
}
.signal-hero__headline {
    margin: 0 0 0.35rem 0;
    font-size: 1.45rem;
    line-height: 1.25;
    color: var(--ink);
    font-weight: 600;
}
.signal-hero__detail {
    margin: 0 0 0.9rem 0;
    color: var(--muted);
    font-size: 0.92rem;
    max-width: 52rem;
}
.signal-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    position: relative;
    z-index: 1;
}
.signal-hero__actions .button-link,
.signal-hero__actions .ghost {
    font-size: 0.85rem;
}
.signal-hero[data-state="good"]    { --signal-color: var(--state-good); }
.signal-hero[data-state="warn"]    { --signal-color: var(--state-warn); }
.signal-hero[data-state="bad"]     { --signal-color: var(--state-bad);  }

.signal-hero__gauge {
    position: relative;
    z-index: 1;
    width: 9rem;
    height: 9rem;
    flex: 0 0 auto;
}
@media (max-width: 720px) {
    .signal-hero { grid-template-columns: 1fr; text-align: left; }
    .signal-hero__gauge { width: 7rem; height: 7rem; }
}

/* Real composite gauge (#2). */
.confidence-gauge {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: conic-gradient(
        var(--signal-color, var(--accent)) 0
            calc(var(--gauge-pct, 70) * 1%),
        color-mix(in srgb, var(--line) 60%, transparent)
            calc(var(--gauge-pct, 70) * 1%) 100%
    );
    padding: 0.55rem;
    position: relative;
}
.confidence-gauge__core {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--bg-elevated);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--ink);
}
.confidence-gauge__value {
    font-size: 1.85rem;
    font-weight: 700;
    line-height: 1;
}
.confidence-gauge__label {
    font-size: 0.7rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 0.2rem;
}
.confidence-breakdown {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.4rem;
    margin-top: 0.8rem;
    font-size: 0.74rem;
    color: var(--muted);
}
.confidence-breakdown > div {
    background: color-mix(in srgb, var(--panel-2) 80%, transparent);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0.4rem 0.5rem;
    text-align: center;
}
.confidence-breakdown strong { display: block; color: var(--ink); font-size: 0.95rem; font-weight: 600; }
@media (max-width: 720px) {
    .confidence-breakdown { grid-template-columns: repeat(2, 1fr); }
}

/* -----------------------------------------------------------------
 * #14 Onboarding wizard
 * ----------------------------------------------------------------- */
.onboarding-card {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: color-mix(in srgb, var(--panel) 92%, transparent);
    padding: 1.2rem 1.4rem;
    margin-bottom: 1rem;
    position: relative;
}
.onboarding-card__head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 0.85rem;
}
.onboarding-card__title { margin: 0; font-size: 1.05rem; font-weight: 600; color: var(--ink); }
.onboarding-card__subtitle { margin: 0.15rem 0 0; color: var(--muted); font-size: 0.85rem; }
.onboarding-card__progress {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--muted);
    font-size: 0.8rem;
}
.onboarding-progress-bar {
    width: 8rem;
    height: 0.45rem;
    background: var(--line);
    border-radius: 999px;
    overflow: hidden;
}
.onboarding-progress-bar > i {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-strong));
    transition: width 0.4s ease;
}
.onboarding-card__dismiss {
    background: transparent;
    border: 0;
    color: var(--muted);
    cursor: pointer;
    font-size: 0.8rem;
    padding: 0.2rem 0.5rem;
}
.onboarding-card__dismiss:hover { color: var(--ink); }
.onboarding-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.6rem;
}
.onboarding-step {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel-2);
    color: var(--ink);
    text-decoration: none;
    transition: border-color 0.18s ease, transform 0.18s ease;
}
.onboarding-step:hover { border-color: var(--accent); transform: translateY(-1px); }
.onboarding-step__index {
    flex: 0 0 auto;
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 50%;
    background: var(--bg-elevated);
    border: 1px solid var(--line);
    display: grid;
    place-items: center;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--muted);
}
.onboarding-step--done .onboarding-step__index {
    background: var(--state-good);
    border-color: var(--state-good);
    color: white;
}
.onboarding-step--done .onboarding-step__title {
    color: var(--muted);
    text-decoration: line-through;
    text-decoration-color: color-mix(in srgb, var(--muted) 55%, transparent);
}
.onboarding-step__body { display: flex; flex-direction: column; min-width: 0; }
.onboarding-step__title { font-size: 0.85rem; font-weight: 600; }
.onboarding-step__hint { font-size: 0.74rem; color: var(--muted); }

/* -----------------------------------------------------------------
 * #5 Login polish
 * ----------------------------------------------------------------- */
.auth-wordmark {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    margin-bottom: 1.6rem;
}
.auth-wordmark__text {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--ink);
    letter-spacing: 0.01em;
}
.auth-tagline {
    font-size: 0.95rem;
    color: var(--muted);
    line-height: 1.55;
    max-width: 22rem;
    margin: 1rem 0 0;
}
.auth-trust-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 1.4rem;
}
.auth-trust-row .pill {
    background: color-mix(in srgb, var(--panel) 70%, transparent);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.72rem;
}
.auth-sso-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
    margin-bottom: 0.85rem;
}
.auth-sso-grid > a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.55rem 0.7rem;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: var(--panel-2);
    color: var(--ink);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
}
.auth-sso-grid > a:hover { border-color: var(--accent); }
.auth-sso-grid > a .ic { width: 1rem; height: 1rem; }
.auth-divider {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--muted);
    font-size: 0.76rem;
    margin: 0.6rem 0 0.9rem;
}
.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--line);
}

/* -----------------------------------------------------------------
 * Responsive table -> card view (touched lightly to support #10).
 * Only takes effect when an opt-in class is set on the table.
 * ----------------------------------------------------------------- */
@media (max-width: 720px) {
    table.data-table--responsive thead { display: none; }
    table.data-table--responsive,
    table.data-table--responsive tbody,
    table.data-table--responsive tr,
    table.data-table--responsive td {
        display: block;
        width: 100%;
    }
    table.data-table--responsive tr {
        margin-bottom: 0.6rem;
        border: 1px solid var(--line);
        border-radius: 8px;
        padding: 0.6rem 0.7rem;
    }
    table.data-table--responsive td {
        padding: 0.18rem 0;
        border: 0;
    }
    table.data-table--responsive td[data-label]::before {
        content: attr(data-label) ' · ';
        color: var(--muted);
        font-size: 0.74rem;
        margin-right: 0.3rem;
    }
}