.app-shell {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.app-rail {
    --rail-width: 62px;
    --rail-icon-size: 40px;
    width: var(--rail-width);
    flex-shrink: 0;
    background: #0e0e10;
    border-right: 1px solid rgba(255,255,255,0.08);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 0;
    gap: 4px;
    z-index: 50;
    user-select: none;
    position: relative;
}

.app-rail__resizer {
    position: absolute;
    top: 0;
    right: 0;
    width: 6px;
    height: 100%;
    cursor: col-resize;
    z-index: 60;
    background: transparent;
    transition: background 0.15s;
}

.app-rail__resizer:hover,
.app-rail__resizer.is-dragging {
    background: rgba(var(--accent-rgb), 0.2);
}

.app-rail__avatar {
    position: relative;
    width: var(--rail-icon-size);
    height: var(--rail-icon-size);
    border-radius: 50%;
    background: rgba(var(--accent-rgb), 0.15);
    border: 2px solid var(--accent-border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 4px;
    flex-shrink: 0;
    cursor: pointer;
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.03em;
    transition: background 0.15s, border-color 0.15s;
}

.app-rail__avatar:hover {
    background: rgba(var(--accent-rgb), 0.22);
    border-color: var(--accent-border-strong);
}

.app-rail__avatar--bottom {
    margin-bottom: 0;
    margin-top: 4px;
}

.app-rail__avatar-status {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #44b553;
    border: 2px solid #0e0e10;
}

/* ── User popup ── */

.app-rail__user-popup {
    position: fixed;
    left: calc(var(--rail-width) + 8px);
    bottom: 10px;
    width: 220px;
    background: #1a1a1e;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    padding: 6px 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transform: translateX(-4px);
    transition: opacity 0.12s, transform 0.12s;
}

.app-rail__user-popup::before {
    content: '';
    position: absolute;
    right: 100%;
    top: 0;
    width: 20px;
    height: 100%;
}

.app-rail__user-popup.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
}

.rail-popup__header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
}

.rail-popup__header--with-cover {
    flex-direction: column;
    align-items: center;
    padding: 16px 14px 12px;
    gap: 8px;
    text-align: center;
}

/* Avatar with cover support */
.rail-popup__avatar-cover {
    position: relative;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    flex-shrink: 0;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.rail-popup__avatar-cover:hover {
    opacity: 0.95;
}

.rail-popup__avatar-cover.drag-over {
    outline: 2px dashed var(--accent);
    outline-offset: 3px;
    background: rgba(var(--accent-rgb), 0.06);
}

.rail-popup__avatar-cover.has-cover {
    width: 96px;
    height: 96px;
}

.rail-popup__avatar-cover.has-cover .rail-popup__avatar-overlay {
    opacity: 0;
}

.rail-popup__avatar-cover.has-cover:hover .rail-popup__avatar-overlay {
    opacity: 1;
}

.rail-popup__avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(var(--accent-rgb), 0.15);
    color: var(--accent);
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.rail-popup__avatar--large {
    width: 64px;
    height: 64px;
    font-size: 20px;
    background-size: cover;
    background-position: center;
    border: 2px solid var(--accent-border);
    transition: all 0.2s ease;
}

.rail-popup__avatar--large.has-cover {
    background-color: transparent;
    color: transparent;
    width: 96px;
    height: 96px;
    font-size: 28px;
}

.rail-popup__avatar--large .cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.rail-popup__avatar-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.2s ease;
    color: var(--accent);
}

.rail-popup__avatar-cover:hover .rail-popup__avatar-overlay {
    opacity: 1;
}

.rail-popup__avatar-cover.drag-over .rail-popup__avatar-overlay {
    opacity: 1;
    background: rgba(var(--accent-rgb), 0.15);
}


.rail-popup__name {
    font-size: 13px;
    font-weight: 600;
    color: #e5e7eb;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.rail-popup__email {
    font-size: 11px;
    color: #6b7280;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 1px;
}

.rail-popup__divider {
    height: 1px;
    background: rgba(255,255,255,0.06);
    margin: 4px 10px;
}

.rail-popup__item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 7px 14px;
    background: none;
    border: none;
    color: #b0b5bf;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.1s, color 0.1s;
    text-align: left;
}

.rail-popup__item i {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
}

.rail-popup__item:hover {
    background: rgba(255,255,255,0.05);
    color: #e5e7eb;
}

.rail-popup__item--danger:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.rail-popup__badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 2px 6px;
    border-radius: 5px;
    border: 1px solid;
    flex-shrink: 0;
}

.rail-popup__badge--superadmin {
    color: var(--accent);
    border-color: var(--accent-border-strong);
    background: var(--accent-subtle);
}

.rail-popup__badge--admin {
    color: #60a5fa;
    border-color: rgba(96,165,250,0.4);
    background: rgba(96,165,250,0.08);
}

.rail-popup__section {
    padding: 6px 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.rail-popup__section-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #4b5563;
    margin-right: 4px;
}

.rail-popup__key-btn {
    height: 24px;
    font-size: 11px;
    font-weight: 700;
    padding: 0 10px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: all 0.15s;
    background: transparent;
    color: #9ca3af;
}

.rail-popup__key-btn:hover {
    color: #e5e7eb;
    background: rgba(255,255,255,0.07);
}

.rail-popup__key-btn.is-active {
    background: var(--accent);
    color: #000;
}

.rail-popup__shield-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    color: var(--accent, #d4ff26);
}

.rail-popup__section-divider {
    width: 1px;
    height: 14px;
    background: rgba(255,255,255,0.1);
    flex-shrink: 0;
}

.rail-popup__privacy-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    height: 24px;
    font-size: 11px;
    font-weight: 600;
    padding: 0 10px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    background: transparent;
    color: #6b7280;
    transition: all 0.15s;
}

.rail-popup__privacy-btn:hover {
    background: rgba(255,255,255,0.07);
    color: #e5e7eb;
}

.app-rail__server {
    position: relative;
    width: var(--rail-icon-size);
    height: var(--rail-icon-size);
    border-radius: 50%;
    background: #232328;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #b0b5bf;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
    transition: border-radius 0.2s, background 0.15s, color 0.15s;
    flex-shrink: 0;
}

.app-rail__server:hover {
    border-radius: 12px;
    background: rgba(var(--accent-rgb), 0.12);
    color: var(--accent);
}

.app-rail__server.is-active {
    border-radius: 14px;
    background: var(--accent-subtle-2);
    color: var(--accent);
}

.app-rail__server::before {
    content: '';
    position: absolute;
    left: -11px;
    top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 3px;
    height: 8px;
    border-radius: 0 2px 2px 0;
    background: var(--accent);
    transition: transform 0.15s, height 0.15s;
}

.app-rail__server:hover::before {
    transform: translateY(-50%) scaleY(1);
    height: 16px;
}

.app-rail__server.is-active::before {
    transform: translateY(-50%) scaleY(1);
    height: 24px;
}

.app-rail__server .app-rail__tooltip {
    position: fixed;
    left: calc(var(--rail-width) + 6px);
    background: #1c1c1f;
    border: 1px solid rgba(255,255,255,0.08);
    color: #e5e7eb;
    font-size: 11px;
    font-weight: 500;
    padding: 4px 9px;
    border-radius: 7px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.1s;
    z-index: 1000;
    box-shadow: 0 4px 16px rgba(0,0,0,0.5);
    letter-spacing: 0;
}

.app-rail__tooltip-company {
    display: block;
    font-size: 10px;
    font-weight: 400;
    color: #6b7280;
    margin-top: 1px;
}

.app-rail__server:hover .app-rail__tooltip {
    opacity: 1;
}

.app-rail__divider {
    width: 32px;
    height: 1px;
    background: rgba(255,255,255,0.12);
    margin: 6px 0;
    flex-shrink: 0;
}

.app-rail__btn {
    position: relative;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    transition: background 0.15s, color 0.15s, border-radius 0.15s;
    flex-shrink: 0;
}

.app-rail__btn:hover {
    background: rgba(255,255,255,0.06);
    color: #e5e7eb;
    border-radius: 12px;
}

.app-rail__btn.is-active {
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
    border-radius: 12px;
}

.app-rail__btn i {
    width: 16px;
    height: 16px;
}

.app-rail__badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--accent-indicator-bg);
}

.app-rail__spacer {
    flex: 1;
}

.app-rail__tooltip {
    position: fixed;
    left: calc(var(--rail-width) + 6px);
    background: #1c1c1f;
    border: 1px solid rgba(255,255,255,0.08);
    color: #e5e7eb;
    font-size: 11px;
    font-weight: 500;
    padding: 4px 9px;
    border-radius: 7px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.1s;
    z-index: 1000;
    box-shadow: 0 4px 16px rgba(0,0,0,0.5);
}

.app-rail__btn:hover .app-rail__tooltip {
    opacity: 1;
}

/* ── Company separators ── */

.app-rail__company-separator {
    width: 32px;
    height: 1px;
    background: rgba(255,255,255,0.12);
    margin: 8px 0;
    flex-shrink: 0;
}

/* ── Project picker company styling ── */

.project-picker-company {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #6b7280;
    padding: 8px 12px 4px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.project-picker-company:first-child {
    border-top: none;
    padding-top: 4px;
}

.project-picker-company-divider {
    height: 1px;
    background: rgba(255,255,255,0.08);
    margin: 4px 0;
}

/* ── Personal project in rail ── */

.app-rail__server-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
    pointer-events: none;
}

.app-rail__server--personal {
    border: 1px dashed rgba(255,255,255,0.15);
    font-size: 16px;
}

.app-rail__server--personal:hover {
    border-color: rgba(var(--accent-rgb), 0.4);
}

.app-rail__server--personal.is-active {
    border-color: var(--accent);
}

/* ── AI Keys section ── */

.rail-popup__chevron {
    width: 12px;
    height: 12px;
    margin-left: auto;
    flex-shrink: 0;
    transition: transform 0.2s;
}

.rail-popup__chevron.is-open {
    transform: rotate(90deg);
}

.rail-popup__ai-keys {
    padding: 0 10px 6px;
    max-height: 220px;
    overflow-y: auto;
}

.rail-popup__ai-keys-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.rail-popup__ai-key-card {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    border-radius: 6px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    font-size: 11px;
    color: #b0b5bf;
    transition: background 0.1s, border-color 0.1s;
}

.rail-popup__ai-key-card:hover {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.1);
}

.rail-popup__ai-key-card.is-default {
    border-color: var(--accent-border);
    background: var(--accent-subtle);
}

.rail-popup__ai-key-name {
    font-weight: 600;
    color: #e5e7eb;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 90px;
}

.rail-popup__ai-key-url {
    font-size: 10px;
    color: #6b7280;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    min-width: 0;
}

.rail-popup__ai-key-actions {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: auto;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity 0.15s;
}

.rail-popup__ai-key-card:hover .rail-popup__ai-key-actions {
    opacity: 1;
}

.rail-popup__ai-key-action {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    color: #6b7280;
    cursor: pointer;
    border-radius: 4px;
    padding: 0;
    transition: color 0.15s, background 0.15s;
}

.rail-popup__ai-key-action i,
.rail-popup__ai-key-action .lucide {
    width: 11px;
    height: 11px;
}

.rail-popup__ai-key-action:hover {
    color: #e5e7eb;
    background: rgba(255,255,255,0.08);
}

.rail-popup__ai-key-action--danger:hover {
    color: #ef4444;
    background: rgba(239,68,68,0.1);
}

.rail-popup__ai-key-action--star:hover,
.rail-popup__ai-key-action--star.is-default {
    color: var(--accent);
}

.rail-popup__ai-key-add {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    margin-top: 4px;
    padding: 5px 8px;
    border: 1px dashed rgba(255,255,255,0.1);
    border-radius: 6px;
    background: none;
    color: #6b7280;
    font-size: 11px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.rail-popup__ai-key-add:hover {
    color: var(--accent);
    border-color: var(--accent-border);
    background: var(--accent-subtle);
}

/* AI Key edit form */
.rail-popup__ai-key-form {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 6px 8px;
    border-radius: 6px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
}

.rail-popup__ai-key-input {
    width: 100%;
    height: 24px;
    padding: 0 6px;
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.2);
    color: #e5e7eb;
    font-size: 11px;
    outline: none;
    transition: border-color 0.15s;
}

.rail-popup__ai-key-input::placeholder {
    color: #4b5563;
}

.rail-popup__ai-key-input:focus {
    border-color: var(--accent-border-strong);
}

.rail-popup__ai-key-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 4px;
    margin-top: 2px;
}

.rail-popup__ai-key-form-btn {
    height: 22px;
    padding: 0 8px;
    border-radius: 4px;
    border: none;
    font-size: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.rail-popup__ai-key-form-btn--save {
    background: var(--accent);
    color: #000;
}

.rail-popup__ai-key-form-btn--save:hover {
    filter: brightness(0.9);
}

.rail-popup__ai-key-form-btn--cancel {
    background: rgba(255,255,255,0.06);
    color: #9ca3af;
}

.rail-popup__ai-key-form-btn--cancel:hover {
    background: rgba(255,255,255,0.1);
    color: #e5e7eb;
}

/* ── Hue picker row ── */
.rail-popup__hue-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 14px 6px;
}

.rail-popup__hue-icon {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    color: #6b7280;
}

.rail-popup__hue-slider {
    -webkit-appearance: none;
    appearance: none;
    flex: 1;
    height: 6px;
    border-radius: 3px;
    outline: none;
    cursor: pointer;
    background: linear-gradient(to right,
        hsl(0,100%,55%), hsl(30,100%,55%), hsl(60,100%,55%),
        hsl(90,100%,55%), hsl(120,100%,55%), hsl(150,100%,55%),
        hsl(180,100%,55%), hsl(210,100%,55%), hsl(240,100%,55%),
        hsl(270,100%,55%), hsl(300,100%,55%), hsl(330,100%,55%),
        hsl(359,100%,55%)
    );
}

.rail-popup__hue-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent, #d4ff26);
    border: 2px solid #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.4);
    cursor: pointer;
    transition: background 0.1s;
}

.rail-popup__hue-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent, #d4ff26);
    border: 2px solid #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.4);
    cursor: pointer;
}

.rail-popup__hue-reset {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: none;
    background: none;
    color: #6b7280;
    cursor: pointer;
    border-radius: 4px;
    padding: 0;
    transition: color 0.15s, background 0.15s;
}

.rail-popup__hue-reset:hover {
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.1);
}

.rail-popup__hue-reset i,
.rail-popup__hue-reset .lucide {
    width: 12px;
    height: 12px;
}