/* ─── Dashboard Layout ─── */

:root {
    --sb-width: 260px;
    --sb-bg: #fafafa;
    --sb-bg-dark: #0b0b10;
    --sb-border: #e5e5e5;
    --sb-border-dark: #27272a;
    --sb-text: #52525b;
    --sb-text-dark: #a1a1aa;
    --sb-active-bg: #18181b;
    --sb-active-text: #fff;
    --sb-active-bg-dark: #fafafa;
    --sb-active-text-dark: #18181b;
    --content-bg: #f4f4f5;
    --content-bg-dark: #09090b;
    --topbar-h: 56px;
    --radius: 10px;
    --radius-sm: 7px;
    --transition: .18s cubic-bezier(.4,0,.2,1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    padding: 0;
}

/* ── Layout Grid ── */

.sb-layout {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ── */

.sb-sidebar {
    width: var(--sb-width);
    min-width: var(--sb-width);
    background: var(--sb-bg);
    border-right: 1px solid var(--sb-border);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 40;
    transition: transform var(--transition);
    display: flex;
    flex-direction: column;
}

.sb-sidebar-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 20px 0 16px;
    overflow-y: auto;
}

/* ── Sidebar: Brand ── */

.sb-sidebar-brand {
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--sb-border);
    margin-bottom: 8px;
}

.sb-logo-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.sb-logo-wrap img {
    border-radius: 8px;
    padding: 4px;
    border: 1px solid var(--sb-border);
    flex-shrink: 0;
}

.sb-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.sb-brand-title {
    font-size: 15px;
    font-weight: 700;
    color: #18181b;
    letter-spacing: -.01em;
}

.sb-brand-sub {
    font-size: 11px;
    font-weight: 500;
    color: var(--sb-text);
    letter-spacing: .02em;
}

/* ── Sidebar: Nav ── */

.sb-nav {
    flex: 1;
    padding: 0 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sb-nav-section {
    display: flex;
    flex-direction: column;
    gap: 1px;
    margin-bottom: 12px;
}

.sb-nav-heading {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--sb-text);
    padding: 8px 8px 6px;
    display: block;
}

/* ── Sidebar: Main Nav Links ── */

.sb-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    font-size: 13.5px;
    font-weight: 500;
    color: #3f3f46;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
    letter-spacing: .005em;
}

.sb-nav-link:hover {
    background: #e4e4e7;
    color: #18181b;
}

.sb-nav-link.active {
    background: var(--sb-active-bg);
    color: var(--sb-active-text);
    font-weight: 600;
}

.sb-nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: .85;
}

.sb-nav-link.active .sb-nav-icon { opacity: 1; }

/* ── Sidebar: Sub Nav Links (Artist Tabs) ── */

.sb-sub-link {
    display: flex;
    align-items: center;
    padding: 7px 10px 7px 34px;
    font-size: 13px;
    font-weight: 450;
    color: #52525b;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
}

.sb-sub-link:hover {
    background: #e4e4e7;
    color: #18181b;
}

.sb-sub-link.active {
    background: var(--sb-active-bg);
    color: var(--sb-active-text);
    font-weight: 600;
}

/* ── Sidebar: Footer / User ── */

.sb-sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--sb-border);
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sb-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sb-user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: #18181b;
    color: #fafafa;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .03em;
    flex-shrink: 0;
}

.sb-user-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.sb-user-name {
    font-size: 13px;
    font-weight: 600;
    color: #18181b;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sb-user-logout {
    font-size: 11px;
    color: #a1a1aa;
    text-decoration: none;
    font-weight: 500;
}

.sb-user-logout:hover { color: #ef4444; }

.sb-login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 9px 14px;
    border-radius: var(--radius-sm);
    background: #18181b;
    color: #fafafa;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: opacity var(--transition);
}

.sb-login-btn:hover { opacity: .85; }

/* ── Sidebar: Theme Toggle ── */

.sb-theme-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    border: 1px solid var(--sb-border);
    background: transparent;
    color: #3f3f46;
    cursor: pointer;
    transition: background var(--transition);
    padding: 0;
}

.sb-theme-btn:hover { background: #e4e4e7; }

.sb-theme-btn .icon-sun,
.sb-theme-btn .icon-moon {
    width: 17px;
    height: 17px;
}

.dark .sb-theme-btn .icon-sun { display: none; }
.dark .sb-theme-btn .icon-moon { display: block; }
.sb-theme-btn .icon-moon { display: none; }
.dark .sb-theme-btn .icon-sun { display: none; }
html:not(.dark) .sb-theme-btn .icon-sun { display: block; }
html:not(.dark) .sb-theme-btn .icon-moon { display: none; }

/* ── Main Content ── */

.sb-content {
    flex: 1;
    margin-left: var(--sb-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-width: 0;
    background: var(--content-bg);
}

/* ── Top Bar ── */

.sb-topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    height: var(--topbar-h);
    background: rgba(255,255,255,.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--sb-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    gap: 12px;
}

.sb-hamburger {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--sb-border);
    background: transparent;
    color: #3f3f46;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}

.sb-hamburger:hover { background: #e4e4e7; }

.sb-topbar-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--sb-text);
    min-width: 0;
}

.sb-topbar-breadcrumb a {
    color: var(--sb-text);
    text-decoration: none;
}

.sb-topbar-breadcrumb a:hover { color: #18181b; }

.sb-topbar-breadcrumb .sep {
    color: #d4d4d8;
    font-size: 11px;
}

.sb-topbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sb-topbar-actions .sb-theme-btn {
    border: 1px solid var(--sb-border);
    width: 34px;
    height: 34px;
}

/* ── Main Content Area ── */

.sb-main {
    flex: 1;
    padding: 28px 32px 40px;
    max-width: 1100px;
    width: 100%;
    min-width: 0;
}

/* Prevent content from pushing outside the viewport */
.sb-content,
.sb-main {
    overflow-x: hidden;
}

/* ── Overlay (mobile) ── */

.sb-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 35;
    transition: opacity var(--transition);
}

/* ── Footer inside main content ── */

.sb-footer {
    padding: 16px 32px;
    border-top: 1px solid var(--sb-border);
    font-size: 12px;
    color: var(--sb-text);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.sb-footer a {
    color: var(--sb-text);
    text-decoration: none;
}

.sb-footer a:hover { color: #18181b; }

.sb-footer nav {
    display: flex;
    gap: 16px;
}

/* ── Mobile: Sidebar Hidden ── */

@media (max-width: 860px) {
    .sb-sidebar {
        transform: translateX(-100%);
    }

    .sb-sidebar.open {
        transform: translateX(0);
    }

    .sb-overlay.open {
        display: block;
    }

    .sb-content {
        margin-left: 0;
    }

    .sb-hamburger {
        display: flex;
    }

    .sb-main {
        padding: 20px 16px 32px;
    }

    .sb-footer {
        padding: 16px;
    }

    .sb-topbar {
        padding: 0 12px;
    }
}

/* Mobile sidebar extra space for safe area */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .sb-sidebar-inner {
        padding-bottom: calc(16px + env(safe-area-inset-bottom));
    }
}

/* ── Dark Mode ── */

.dark .sb-sidebar {
    background: var(--sb-bg-dark);
    border-right-color: var(--sb-border-dark);
}

.dark .sb-sidebar-brand {
    border-bottom-color: var(--sb-border-dark);
}

.dark .sb-brand-title { color: #fafafa; }
.dark .sb-brand-sub { color: var(--sb-text-dark); }

.dark .sb-logo-wrap img {
    border-color: var(--sb-border-dark);
}

.dark .sb-nav-link {
    color: #a1a1aa;
}

.dark .sb-nav-link:hover {
    background: #27272a;
    color: #fafafa;
}

.dark .sb-nav-link.active {
    background: var(--sb-active-bg-dark);
    color: var(--sb-active-text-dark);
}

.dark .sb-sub-link {
    color: #71717a;
}

.dark .sb-sub-link:hover {
    background: #27272a;
    color: #fafafa;
}

.dark .sb-sub-link.active {
    background: var(--sb-active-bg-dark);
    color: var(--sb-active-text-dark);
}

.dark .sb-nav-heading { color: #52525b; }

.dark .sb-sidebar-footer {
    border-top-color: var(--sb-border-dark);
}

.dark .sb-user-avatar {
    background: #fafafa;
    color: #18181b;
}

.dark .sb-user-name { color: #fafafa; }

.dark .sb-login-btn {
    background: #fafafa;
    color: #18181b;
}

.dark .sb-theme-btn {
    border-color: var(--sb-border-dark);
    color: #a1a1aa;
}

.dark .sb-theme-btn:hover { background: #27272a; }

.dark .sb-topbar {
    background: rgba(9,9,11,.8);
    border-bottom-color: var(--sb-border-dark);
}

.dark .sb-topbar-breadcrumb { color: #71717a; }
.dark .sb-topbar-breadcrumb a { color: #71717a; }
.dark .sb-topbar-breadcrumb a:hover { color: #fafafa; }
.dark .sb-topbar-breadcrumb .sep { color: #3f3f46; }

.dark .sb-hamburger {
    border-color: var(--sb-border-dark);
    color: #a1a1aa;
}

.dark .sb-hamburger:hover { background: #27272a; }

.dark .sb-content {
    background: var(--content-bg-dark);
}

.dark .sb-footer {
    border-top-color: var(--sb-border-dark);
    color: #71717a;
}

.dark .sb-footer a { color: #71717a; }
.dark .sb-footer a:hover { color: #fafafa; }

.dark .sb-topbar-actions .sb-theme-btn {
    border-color: var(--sb-border-dark);
    color: #a1a1aa;
}

/* ── Light Logo / Dark Logo visibility ── */

.sb-logo-light { display: block; }
.sb-logo-dark { display: none; }
.dark .sb-logo-light { display: none; }
.dark .sb-logo-dark { display: block; }