/**
 * App Layout Styles
 * =================
 * Pure CSS — NO Bootstrap, NO Tailwind.
 * All colors use CSS custom properties from variables.css + theme-variables.css.
 * Dark-first: dark is the platform default, light mode is opt-in.
 */

.app-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--body-bg, #0c0c1e);
    color: var(--text-color, #f0f0fa);
    transition: background 200ms ease, color 200ms ease;
}

.app-layout-main {
    flex: 1;
    padding: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.app-header {
    background: var(--card-bg, #141430);
    border-bottom: 1px solid var(--border-color, rgba(255,255,255,0.08));
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 8px rgba(0,0,0,0.4);
}

.app-header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.app-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary, #e91e8c);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.app-logo:hover {
    color: var(--color-primary-light, #f472b6);
}

.app-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.app-nav-link {
    padding: 0.5rem 0.875rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted, #8888aa);
    text-decoration: none;
    transition: all 0.2s ease;
}

.app-nav-link:hover {
    color: var(--text-color, #f0f0fa);
    background: var(--secondary-bg, #111128);
}

.app-nav-link.active {
    color: var(--color-primary, #e91e8c);
    background: var(--color-primary-muted, rgba(233,30,140,0.12));
}

.app-user-menu { position: relative; }

.app-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    cursor: pointer;
    border: 2px solid var(--color-primary, #e91e8c);
    transition: border-color 0.2s;
}

.app-user-avatar:hover {
    border-color: var(--color-primary-light, #f472b6);
}

.app-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--card-bg, #141430);
    border: 1px solid var(--border-color, rgba(255,255,255,0.08));
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    min-width: 200px;
    padding: 0.5rem;
    z-index: 200;
}

.app-dropdown-item {
    display: block;
    padding: 0.625rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    color: var(--text-color, #f0f0fa);
    text-decoration: none;
    transition: background 0.15s ease;
}

.app-dropdown-item:hover {
    background: var(--secondary-bg, #111128);
    color: var(--color-primary, #e91e8c);
}

.app-dropdown-divider {
    height: 1px;
    background: var(--border-color, rgba(255,255,255,0.08));
    margin: 0.25rem 0;
}

.app-footer {
    background: var(--card-bg, #141430);
    border-top: 1px solid var(--border-color, rgba(255,255,255,0.08));
    padding: 1.5rem;
    text-align: center;
    font-size: 0.8125rem;
    color: var(--text-muted, #8888aa);
}

.app-flash-success {
    background: var(--color-success-bg, rgba(52,211,153,0.12));
    border: 1px solid rgba(52,211,153,0.25);
    color: var(--color-success, #34d399);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.app-flash-error {
    background: var(--color-danger-bg, rgba(248,113,113,0.12));
    border: 1px solid rgba(248,113,113,0.25);
    color: var(--color-danger, #f87171);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.app-mobile-menu-button {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color, #f0f0fa);
    padding: 0.25rem;
}

/* Light mode overrides */
[data-theme="light"] .app-header    { box-shadow: 0 1px 4px rgba(26,26,46,0.08); }
[data-theme="light"] .app-dropdown { box-shadow: 0 8px 24px rgba(26,26,46,0.12); }

@media (max-width: 768px) {
    .app-layout-main         { padding: 1rem; }
    .app-nav                 { display: none; }
    .app-mobile-menu-button  { display: block; }
    .app-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--card-bg, #141430);
        border-bottom: 1px solid var(--border-color, rgba(255,255,255,0.08));
        padding: 1rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.4);
        z-index: 99;
    }
}