/* =========================================================================
   DMailBox design system
   Tokens → base → components. Layout-specific styles live in .razor.css files.
   ========================================================================= */

:root {
    --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;

    --color-bg: #f6f7f9;
    --color-surface: #ffffff;
    --color-surface-muted: #f3f4f6;
    --color-surface-hover: #f5f6fa;
    --color-border: #e6e8ec;
    --color-border-strong: #d2d6dc;

    --color-text: #101828;
    --color-text-muted: #5b6474;
    --color-text-subtle: #8a93a3;

    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-soft: #eef0ff;
    --color-primary-text: #4338ca;
    --color-primary-ring: rgba(79, 70, 229, .22);

    --color-success: #067647;
    --color-success-soft: #ecfdf3;
    --color-success-border: #abefc6;
    --color-warning: #b54708;
    --color-warning-soft: #fffaeb;
    --color-warning-border: #fedf89;
    --color-danger: #d92d20;
    --color-danger-hover: #b42318;
    --color-danger-soft: #fef3f2;
    --color-danger-border: #fecdca;
    --color-info: #175cd3;
    --color-info-soft: #eff8ff;
    --color-info-border: #b2ddff;

    --radius-sm: 6px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 999px;

    --shadow-xs: 0 1px 2px rgba(16, 24, 40, .05);
    --shadow-sm: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04);
    --shadow-md: 0 4px 12px -2px rgba(16, 24, 40, .08), 0 2px 4px -2px rgba(16, 24, 40, .04);
    --shadow-lg: 0 16px 40px -12px rgba(16, 24, 40, .22);

    --topbar-height: 60px;
    --sidebar-width: 248px;

    --transition: 150ms cubic-bezier(.4, 0, .2, 1);
}

/* ---------- Base ---------- */

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

html, body { height: 100%; }

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 600; line-height: 1.25; color: var(--color-text); }
h1 { font-size: 24px; letter-spacing: -.02em; }
h2 { font-size: 18px; letter-spacing: -.01em; }
h3 { font-size: 15px; }
p { margin: 0; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); text-decoration: underline; }

h1:focus, h1:focus-visible { outline: none; }

:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

hr { border: 0; border-top: 1px solid var(--color-border); margin: 16px 0; }

code, .mono { font-family: var(--font-mono); font-size: 12.5px; }

svg.icon { flex-shrink: 0; display: inline-block; vertical-align: middle; }

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

.muted { color: var(--color-text-muted); }
.subtle { color: var(--color-text-subtle); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 12px; }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.fw-600 { font-weight: 600; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.break-all { word-break: break-all; }
.nowrap { white-space: nowrap; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.stack-sm { display: flex; flex-direction: column; gap: 8px; }
.stack-lg { display: flex; flex-direction: column; gap: 24px; }
.row { display: flex; align-items: center; gap: 8px; }
.row-wrap { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.spacer { flex: 1; }
.mt-1 { margin-top: 4px; } .mt-2 { margin-top: 8px; } .mt-3 { margin-top: 12px; } .mt-4 { margin-top: 16px; } .mt-6 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; } .mb-4 { margin-bottom: 16px; }
.w-100 { width: 100%; }
.center { text-align: center; }
.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;
}

.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 900px) {
    .grid-3, .grid-2 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- Page ---------- */

.page { padding: 28px 32px 48px; max-width: 1180px; margin: 0 auto; width: 100%; }
.page-narrow { max-width: 720px; }
.page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.page-header .page-title { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.page-subtitle { color: var(--color-text-muted); margin-top: 4px; }
.page-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.back-link { display: inline-flex; align-items: center; gap: 4px; color: var(--color-text-muted); font-size: 13px; margin-bottom: 12px; }
.back-link:hover { color: var(--color-text); text-decoration: none; }

@media (max-width: 640px) {
    .page { padding: 20px 16px 40px; }
    h1 { font-size: 20px; }
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    height: 36px; padding: 0 14px;
    font: inherit; font-size: 14px; font-weight: 500; line-height: 1;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xs);
    cursor: pointer; white-space: nowrap; user-select: none;
    transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
}
.btn:hover { background: var(--color-surface-hover); text-decoration: none; color: var(--color-text); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 4px var(--color-primary-ring); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; pointer-events: none; }

.btn-primary { color: #fff; background: var(--color-primary); border-color: var(--color-primary); }
.btn-primary:hover { color: #fff; background: var(--color-primary-hover); border-color: var(--color-primary-hover); }

.btn-danger { color: #fff; background: var(--color-danger); border-color: var(--color-danger); }
.btn-danger:hover { color: #fff; background: var(--color-danger-hover); border-color: var(--color-danger-hover); }

.btn-ghost { background: transparent; border-color: transparent; box-shadow: none; color: var(--color-text-muted); }
.btn-ghost:hover { background: var(--color-surface-muted); color: var(--color-text); }

.btn-danger-ghost { background: transparent; border-color: transparent; box-shadow: none; color: var(--color-danger); }
.btn-danger-ghost:hover { background: var(--color-danger-soft); color: var(--color-danger-hover); }

.btn-sm { height: 30px; padding: 0 10px; font-size: 13px; border-radius: var(--radius-sm); }
.btn-lg { height: 42px; padding: 0 18px; font-size: 15px; }
.btn-block { width: 100%; }
.btn-icon { width: 36px; padding: 0; }
.btn-icon.btn-sm { width: 30px; }

.btn .spinner { width: 14px; height: 14px; border-width: 2px; }

/* ---------- Forms ---------- */

.form { display: flex; flex-direction: column; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 13px; font-weight: 500; color: var(--color-text); }
.form-label .optional { color: var(--color-text-subtle); font-weight: 400; }
.form-hint { font-size: 12.5px; color: var(--color-text-muted); }

.form-control {
    width: 100%; min-height: 38px; padding: 8px 12px;
    font: inherit; font-size: 14px; color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xs);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control::placeholder { color: var(--color-text-subtle); }
.form-control:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 4px var(--color-primary-ring); }
.form-control:disabled { background: var(--color-surface-muted); color: var(--color-text-muted); }
textarea.form-control { resize: vertical; line-height: 1.55; }
select.form-control { appearance: none; padding-right: 36px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235b6474' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; }

.form-control.invalid { border-color: var(--color-danger); }
.form-control.invalid:focus { box-shadow: 0 0 0 4px rgba(217, 45, 32, .15); }
.validation-message { font-size: 12.5px; color: var(--color-danger); }
.validation-errors { margin: 0; padding: 10px 14px 10px 30px; font-size: 13px; color: var(--color-danger); background: var(--color-danger-soft); border: 1px solid var(--color-danger-border); border-radius: var(--radius); }
.validation-errors:empty { display: none; }

.input-group { display: flex; align-items: stretch; }
.input-group .form-control { border-top-right-radius: 0; border-bottom-right-radius: 0; }
.input-addon {
    display: inline-flex; align-items: center; padding: 0 12px;
    color: var(--color-text-muted); background: var(--color-surface-muted);
    border: 1px solid var(--color-border-strong); border-left: 0;
    border-top-right-radius: var(--radius); border-bottom-right-radius: var(--radius);
    white-space: nowrap; font-size: 14px; max-width: 60%; overflow: hidden; text-overflow: ellipsis;
}

.form-check { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--color-text); cursor: pointer; }
.form-check input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--color-primary); margin: 0; }

.form-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.switch {
    position: relative; display: inline-flex; flex-shrink: 0; width: 36px; height: 20px; padding: 0;
    background: var(--color-border-strong); border: 0; border-radius: var(--radius-full); cursor: pointer;
    transition: background var(--transition);
}
.switch::after {
    content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px;
    background: #fff; border-radius: 50%; box-shadow: 0 1px 2px rgba(16, 24, 40, .2);
    transition: transform var(--transition);
}
.switch[aria-checked="true"] { background: var(--color-primary); }
.switch[aria-checked="true"]::after { transform: translateX(16px); }
.switch:disabled { opacity: .5; cursor: not-allowed; }
.switch:focus-visible { outline: none; box-shadow: 0 0 0 4px var(--color-primary-ring); }

/* ---------- Cards ---------- */

.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-xs); }
.card-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--color-border); }
.card-title { font-size: 15px; font-weight: 600; }
.card-subtitle { font-size: 13px; color: var(--color-text-muted); margin-top: 2px; }
.card-body { padding: 20px; }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--color-border); background: #fcfcfd; border-bottom-left-radius: var(--radius-lg); border-bottom-right-radius: var(--radius-lg); }
@media (max-width: 640px) {
    .card-body { padding: 16px; }
    .card-header { padding: 14px 16px; }
}

/* ---------- Tables ---------- */

.table-wrap { width: 100%; overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
    text-align: left; font-size: 12px; font-weight: 500; color: var(--color-text-muted);
    text-transform: uppercase; letter-spacing: .04em;
    padding: 10px 16px; background: #fafbfc; border-bottom: 1px solid var(--color-border); white-space: nowrap;
}
.table td { padding: 12px 16px; border-bottom: 1px solid var(--color-border); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td { background: #fcfcfd; }
.table .actions { text-align: right; white-space: nowrap; }
.table a.row-link { color: var(--color-text); font-weight: 500; }
.table a.row-link:hover { color: var(--color-primary); }

/* ---------- Badges ---------- */

.badge {
    display: inline-flex; align-items: center; gap: 6px;
    height: 22px; padding: 0 8px;
    font-size: 12px; font-weight: 500; line-height: 1; white-space: nowrap;
    border-radius: var(--radius-full); border: 1px solid transparent;
    color: var(--color-text-muted); background: var(--color-surface-muted); border-color: var(--color-border);
}
.badge-dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-success { color: var(--color-success); background: var(--color-success-soft); border-color: var(--color-success-border); }
.badge-warning { color: var(--color-warning); background: var(--color-warning-soft); border-color: var(--color-warning-border); }
.badge-danger { color: var(--color-danger); background: var(--color-danger-soft); border-color: var(--color-danger-border); }
.badge-info { color: var(--color-info); background: var(--color-info-soft); border-color: var(--color-info-border); }
.badge-primary { color: var(--color-primary-text); background: var(--color-primary-soft); border-color: #d9dbff; }
.count-pill { display: inline-flex; align-items: center; justify-content: center; min-width: 20px; height: 20px; padding: 0 6px; font-size: 11.5px; font-weight: 600; color: var(--color-primary-text); background: var(--color-primary-soft); border-radius: var(--radius-full); }

/* ---------- Alerts ---------- */

.alert { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; font-size: 14px; border-radius: var(--radius); border: 1px solid; }
.alert .icon { margin-top: 1px; }
.alert-title { font-weight: 600; }
.alert-success { color: #05603a; background: var(--color-success-soft); border-color: var(--color-success-border); }
.alert-danger { color: #912018; background: var(--color-danger-soft); border-color: var(--color-danger-border); }
.alert-warning { color: #93370d; background: var(--color-warning-soft); border-color: var(--color-warning-border); }
.alert-info { color: #194185; background: var(--color-info-soft); border-color: var(--color-info-border); }

/* ---------- Empty state / stats ---------- */

.empty-state { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 8px; padding: 48px 24px; }
.empty-state-icon { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: var(--radius-lg); color: var(--color-primary); background: var(--color-primary-soft); margin-bottom: 6px; }
.empty-state h3 { font-size: 16px; }
.empty-state p { color: var(--color-text-muted); max-width: 420px; }
.empty-state .btn { margin-top: 10px; }

.stat-card { display: flex; align-items: center; gap: 14px; padding: 18px 20px; }
.stat-icon { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: var(--radius); color: var(--color-primary); background: var(--color-primary-soft); }
.stat-label { font-size: 13px; color: var(--color-text-muted); }
.stat-value { font-size: 26px; font-weight: 600; letter-spacing: -.02em; line-height: 1.2; }

/* ---------- Chips & inline search ---------- */

.chip {
    flex-shrink: 0; height: 28px; padding: 0 11px;
    font: inherit; font-size: 12.5px; font-weight: 500;
    color: var(--color-text-muted); background: var(--color-surface);
    border: 1px solid var(--color-border); border-radius: var(--radius-full); cursor: pointer;
}
.chip:hover { color: var(--color-text); border-color: var(--color-border-strong); }
.chip.active { color: var(--color-primary-text); background: var(--color-primary-soft); border-color: #d9dbff; }

.search-inline { display: flex; gap: 8px; width: 100%; max-width: 420px; }

/* ---------- Avatar ---------- */

.avatar-circle { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; color: #fff; font-weight: 600; border-radius: 50%; user-select: none; }
.avatar-sm { width: 28px; height: 28px; font-size: 12px; }
.avatar-md { width: 36px; height: 36px; font-size: 14px; }
.avatar-lg { width: 42px; height: 42px; font-size: 16px; }

/* ---------- Spinner / skeleton ---------- */

.spinner { width: 18px; height: 18px; border: 2px solid var(--color-border-strong); border-top-color: var(--color-primary); border-radius: 50%; animation: spin .7s linear infinite; display: inline-block; }
.btn-primary .spinner, .btn-danger .spinner { border-color: rgba(255, 255, 255, .35); border-top-color: #fff; }
@keyframes spin { to { transform: rotate(360deg); } }

.page-loader { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 64px 16px; color: var(--color-text-muted); }

.skeleton { background: linear-gradient(90deg, #eef0f3 25%, #f6f7f9 50%, #eef0f3 75%); background-size: 200% 100%; animation: shimmer 1.2s infinite; border-radius: var(--radius-sm); }
@keyframes shimmer { to { background-position: -200% 0; } }

/* ---------- Modal ---------- */

.modal-backdrop { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 16px; background: rgba(16, 24, 40, .45); animation: fade-in 120ms ease-out; }
.modal { width: 100%; max-width: 440px; background: var(--color-surface); border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); animation: pop-in 150ms ease-out; }
.modal-body { padding: 24px 24px 8px; display: flex; gap: 14px; }
.modal-icon { flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; color: var(--color-danger); background: var(--color-danger-soft); }
.modal-icon.info { color: var(--color-primary); background: var(--color-primary-soft); }
.modal-title { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.modal-text { color: var(--color-text-muted); }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; padding: 18px 24px 20px; }
@keyframes fade-in { from { opacity: 0; } }
@keyframes pop-in { from { opacity: 0; transform: translateY(6px) scale(.98); } }

/* ---------- Toasts ---------- */

.toast-host { position: fixed; right: 20px; bottom: 20px; z-index: 1100; display: flex; flex-direction: column; gap: 8px; max-width: calc(100vw - 40px); }
.toast { display: flex; align-items: center; gap: 10px; min-width: 260px; max-width: 420px; padding: 12px 14px; color: #fff; background: #1d2433; border-radius: var(--radius); box-shadow: var(--shadow-lg); font-size: 14px; animation: pop-in 150ms ease-out; }
.toast .icon { color: #a6f4c5; }
.toast.toast-error .icon { color: #fda29b; }
.toast-close { margin-left: auto; background: none; border: 0; color: #98a2b3; cursor: pointer; padding: 2px; display: inline-flex; }
.toast-close:hover { color: #fff; }
@media (max-width: 640px) { .toast-host { left: 16px; right: 16px; bottom: 16px; } .toast { min-width: 0; max-width: none; } }

/* ---------- Dropdown (details/summary, works without interactivity) ---------- */

.dropdown { position: relative; }
.dropdown > summary { list-style: none; cursor: pointer; }
.dropdown > summary::-webkit-details-marker { display: none; }
.dropdown-menu {
    position: absolute; right: 0; top: calc(100% + 6px); z-index: 900; min-width: 220px;
    padding: 6px; background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
}
.dropdown-header { padding: 8px 10px 10px; border-bottom: 1px solid var(--color-border); margin-bottom: 6px; }
.dropdown-item {
    display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 10px;
    font: inherit; font-size: 14px; color: var(--color-text); text-align: left;
    background: none; border: 0; border-radius: var(--radius-sm); cursor: pointer;
}
.dropdown-item:hover { background: var(--color-surface-muted); color: var(--color-text); text-decoration: none; }
.dropdown-item .icon { color: var(--color-text-muted); }

/* ---------- Code / copy ---------- */

.code-value { display: flex; align-items: center; gap: 6px; min-width: 0; }
.code-value code { display: block; padding: 4px 8px; background: var(--color-surface-muted); border: 1px solid var(--color-border); border-radius: var(--radius-sm); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; max-width: 100%; }

/* ---------- Auth pages (content inside AuthLayout) ---------- */

.auth-header { margin-bottom: 28px; }
.auth-header h1 { font-size: 26px; letter-spacing: -.02em; }
.auth-header p { margin-top: 8px; color: var(--color-text-muted); font-size: 15px; }
.auth-footer { margin-top: 8px; text-align: center; font-size: 14px; color: var(--color-text-muted); }
.auth-status { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 14px; }
.auth-status h1 { font-size: 24px; }
.auth-status p { color: var(--color-text-muted); font-size: 15px; }
.auth-status .alert { text-align: left; }
.auth-status-icon { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: 50%; color: var(--color-primary); background: var(--color-primary-soft); }
.auth-status-icon.success { color: var(--color-success); background: var(--color-success-soft); }
.auth-status-icon.danger { color: var(--color-danger); background: var(--color-danger-soft); }

/* ---------- Blazor framework UI ---------- */

#blazor-error-ui {
    display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 2000;
    padding: 12px 20px; color: #fff; background: #b42318; box-shadow: 0 -1px 2px rgba(0, 0, 0, .2);
}
#blazor-error-ui a { color: #fff; text-decoration: underline; margin-left: 8px; }
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 16px; top: 10px; text-decoration: none; }

.blazor-error-boundary { padding: 16px; color: #912018; background: var(--color-danger-soft); border: 1px solid var(--color-danger-border); border-radius: var(--radius); }
.blazor-error-boundary::after { content: "Something went wrong while displaying this section. Please reload the page."; }