:root {
    --color-primary: #0f766e;
    --color-primary-strong: #115e59;
    --color-primary-subtle: rgba(15, 118, 110, 0.08);
    --color-accent: #2dd4bf;
    --color-success: #059669;
    --color-warning: #d97706;
    --color-danger: #dc2626;
    --color-surface: #f6f8f8;
    --color-surface-card: #ffffff;
    --color-surface-soft: #f1f5f4;
    --color-surface-raised: #ffffff;
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-muted: #64748b;
    --color-border: rgba(15, 23, 42, 0.09);
    --color-border-strong: rgba(15, 23, 42, 0.14);
    --color-contrast: #ffffff;
    --color-chrome: #0f172a;
    --color-chrome-strong: #111827;
    --radius-control: 0.5rem;
    --radius-card: 0.75rem;
    --radius-panel: 1rem;
    --radius-pill: 999px;
    --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.035), 0 6px 18px rgba(15, 23, 42, 0.035);
    --shadow-popover: 0 18px 48px rgba(15, 23, 42, 0.14), 0 2px 8px rgba(15, 23, 42, 0.06);
    --transition-fast: 140ms ease;
}

:root[data-theme="dark"] {
    --color-primary: #2dd4bf;
    --color-primary-strong: #5eead4;
    --color-primary-subtle: rgba(45, 212, 191, 0.09);
    --color-accent: #0f766e;
    --color-success: #34d399;
    --color-warning: #fbbf24;
    --color-danger: #f87171;
    --color-surface: #0b1120;
    --color-surface-card: #111827;
    --color-surface-soft: #172033;
    --color-surface-raised: #182235;
    --color-text: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-muted: #94a3b8;
    --color-border: rgba(148, 163, 184, 0.16);
    --color-border-strong: rgba(148, 163, 184, 0.24);
    --color-contrast: #0b1120;
    --color-chrome: #080e1a;
    --color-chrome-strong: #111827;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.16), 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-popover: 0 20px 56px rgba(0, 0, 0, 0.38), 0 2px 10px rgba(0, 0, 0, 0.22);
}

html {
    background: var(--color-surface);
}

body {
    background: var(--color-surface);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

p {
    color: var(--color-text-secondary);
}

h1,
h2,
h3,
h4 {
    color: var(--color-text);
    letter-spacing: -0.018em;
}

button,
.button,
input,
select,
textarea,
summary {
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

button:focus-visible,
.button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible,
summary:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--color-primary) 60%, transparent);
    outline-offset: 2px;
}

/* Global surfaces */
.account-panel,
.metric-card,
.content-section,
.work-summary-strip {
    border-color: var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
}

.content-section,
.metric-card {
    background: var(--color-surface-card);
}

.metric-card {
    padding: 1rem 1.05rem;
}

.metric-card span,
.brand-kicker,
.topbar-kicker,
.sidebar-label,
.menu-title {
    color: var(--color-muted);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.035em;
}

.section-heading h2 {
    font-size: 1.05rem;
    font-weight: 720;
    letter-spacing: -0.016em;
}

/* Controls */
input,
select,
textarea,
.field-group input,
.field-group select,
.field-group textarea,
.planner-template-search {
    background: var(--color-surface-card);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-control);
    color: var(--color-text);
    min-height: 2.65rem;
    padding: 0.62rem 0.75rem;
}

input:hover,
select:hover,
textarea:hover,
.field-group input:hover,
.field-group select:hover,
.field-group textarea:hover,
.planner-template-search:hover {
    border-color: color-mix(in srgb, var(--color-primary) 38%, var(--color-border-strong));
}

input:focus,
select:focus,
textarea:focus,
.field-group input:focus,
.field-group select:focus,
.field-group textarea:focus,
.planner-template-search:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

button,
.button {
    border-radius: var(--radius-control);
    font-size: 0.875rem;
    font-weight: 680;
    min-height: 2.5rem;
    padding: 0.5rem 0.8rem;
}

button:hover,
.button:hover {
    border-color: var(--color-primary-strong);
    background: var(--color-primary-strong);
}

button:active,
.button:active {
    transform: translateY(1px);
}

.button-secondary {
    background: var(--color-surface-card);
    border-color: var(--color-border-strong);
    color: var(--color-text-secondary);
}

.button-secondary:hover,
.button-secondary:focus-visible {
    background: var(--color-surface-soft);
    border-color: color-mix(in srgb, var(--color-primary) 42%, var(--color-border-strong));
    color: var(--color-primary-strong);
}

.button-compact {
    min-height: 2.15rem;
    padding: 0.35rem 0.65rem;
}

/* App shell */
.tenant-page {
    grid-template-columns: 14.5rem minmax(0, 1fr);
}

.tenant-sidebar {
    background: var(--color-chrome);
    border-right: 1px solid rgba(255, 255, 255, 0.055);
    display: flex;
    flex-direction: column;
    height: 100vh;
    min-height: 100vh;
    padding: 0.85rem 0.75rem;
}

.sidebar-brand {
    align-items: center;
    display: flex;
    gap: 0.6rem;
    margin: 0.2rem 0.35rem 1.35rem;
}

.sidebar-brand-mark {
    align-items: center;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 0.65rem;
    display: inline-flex;
    flex: 0 0 auto;
    height: 2rem;
    justify-content: center;
    width: 2rem;
}

.sidebar-brand-mark img {
    display: block;
    height: 1.25rem;
    width: 1.25rem;
}

.sidebar-brand-name {
    color: #f8fafc;
    font-size: 0.98rem;
    font-weight: 760;
    letter-spacing: -0.02em;
}

.sidebar-nav {
    gap: 0.15rem;
}

.sidebar-link {
    align-items: center;
    border: 1px solid transparent;
    border-radius: 0.5rem;
    color: #aab6c7;
    display: flex;
    font-size: 0.875rem;
    font-weight: 570;
    min-height: 2.35rem;
    padding: 0.48rem 0.65rem;
}

.sidebar-link:hover {
    background: rgba(255, 255, 255, 0.055);
    color: #f8fafc;
}

.sidebar-link.is-active {
    background: rgba(45, 212, 191, 0.105);
    border-color: rgba(45, 212, 191, 0.12);
    color: #f0fdfa;
    box-shadow: inset 2px 0 0 #2dd4bf;
}

.sidebar-label {
    color: #708096;
    margin: 1rem 0.65rem 0.35rem;
}

.sidebar-footer {
    border-top-color: rgba(255, 255, 255, 0.07);
    margin-top: auto;
    padding: 0.85rem 0.4rem 0.1rem;
}

.sidebar-footer .sidebar-label {
    margin: 0 0 0.25rem;
}

.sidebar-footer strong {
    color: #dbe4ef;
    font-size: 0.82rem;
    font-weight: 650;
}

.tenant-layout {
    background: var(--color-surface);
    min-height: 100vh;
}

.tenant-topbar {
    background: color-mix(in srgb, var(--color-surface-card) 93%, transparent);
    border-bottom-color: var(--color-border);
    min-height: 4.1rem;
    padding: 0.65rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 15;
    backdrop-filter: blur(14px);
}

.tenant-topbar h1 {
    font-size: 1.12rem;
    font-weight: 720;
    letter-spacing: -0.025em;
}

.topbar-kicker {
    margin-bottom: 0.08rem;
}

.tenant-main {
    margin: 0 auto;
    max-width: 92rem;
    padding: 1.5rem;
    width: 100%;
}

/* Menus and popovers */
.menu-control summary {
    background: var(--color-surface-card);
    border-color: var(--color-border);
    border-radius: var(--radius-control);
    color: var(--color-text-secondary);
    font-size: 0.84rem;
    font-weight: 620;
    min-height: 2.3rem;
    padding: 0.45rem 0.7rem;
}

.menu-control summary:hover {
    background: var(--color-surface-soft);
    border-color: var(--color-border-strong);
}

.menu-panel {
    border-color: var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-popover);
    margin-top: 0.15rem;
    min-width: 17rem;
    padding: 0.65rem;
}

.menu-action {
    border-radius: 0.45rem;
    color: var(--color-text-secondary);
    font-weight: 580;
    padding: 0.55rem 0.6rem;
}

.menu-action:hover {
    background: var(--color-surface-soft);
    color: var(--color-primary-strong);
}

.theme-cycle-button {
    border-radius: var(--radius-control);
}

.icon-button {
    align-items: center;
    justify-content: center;
}

.mobile-menu-button {
    background: var(--color-primary-subtle);
    border-color: transparent;
    color: var(--color-primary-strong);
    min-height: 2.4rem;
    min-width: 2.4rem;
    padding: 0;
}

.mobile-menu-button:hover,
.mobile-menu-button:focus-visible {
    background: color-mix(in srgb, var(--color-primary) 14%, transparent);
    border-color: color-mix(in srgb, var(--color-primary) 20%, transparent);
    color: var(--color-primary-strong);
}

.mobile-menu-button svg {
    height: 1.05rem;
    width: 1.05rem;
}

/* Status and feedback */
.status-pill {
    background: var(--color-surface-soft);
    border-color: transparent;
    border-radius: var(--radius-pill);
    color: var(--color-text-secondary);
    font-size: 0.72rem;
    font-weight: 680;
    padding: 0.22rem 0.5rem;
}

.status-success,
.status-warning,
.status-danger {
    border-color: transparent;
}

.message-card {
    border-color: var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-popover);
}

.empty-state,
.notice-card {
    background: var(--color-surface-soft);
    border-color: var(--color-border);
    border-radius: var(--radius-card);
}

.module-list li {
    background: var(--color-surface-soft);
    border-color: transparent;
    border-radius: var(--radius-control);
    color: var(--color-text-secondary);
}

/* Mobile shell */
@media (max-width: 820px) {
    .tenant-sidebar {
        box-shadow: 1.25rem 0 3rem rgba(2, 6, 23, 0.25);
        max-width: 18rem;
        padding: 0.85rem 0.75rem;
    }

    .tenant-topbar {
        min-height: 3.65rem;
        padding: 0.55rem 0.75rem;
    }

    .tenant-topbar h1 {
        font-size: 0.98rem;
    }

    .tenant-main {
        padding: 0.9rem 0.75rem 1rem;
    }

    .topbar-actions .menu-control:last-child summary {
        max-width: 7.5rem;
    }

    .menu-panel {
        max-width: calc(100vw - 1.5rem);
    }

    button,
    .button {
        min-height: 2.65rem;
    }

    .button-compact {
        min-height: 2.35rem;
    }
}

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