/*
 * Sidebar Navigation Component
 */

/* Sidebar variables */
:root {
    --sidebar-width: 240px;
    --sidebar-width-collapsed: 60px;
    --sidebar-transition: var(--transition-base);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Transitions only after JS has initialized */
body.sidebar-ready .sidebar {
    transition: width var(--sidebar-transition), transform var(--sidebar-transition);
}

/* Sidebar header */
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-primary-dark);
    min-height: 60px;
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-inverse);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-brand:hover {
    text-decoration: none;
    opacity: 0.9;
}

/* Toggle button inside sidebar */
.sidebar-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    color: var(--color-text-inverse);
    font-size: var(--font-size-lg);
    cursor: pointer;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
    flex-shrink: 0;
}

body.sidebar-ready .sidebar-toggle-btn {
    transition: transform var(--sidebar-transition), opacity var(--transition-fast);
}

.sidebar-toggle-btn:hover {
    opacity: 1;
}

/* Show close icon on mobile, collapse icon on desktop */
.sidebar-toggle-btn .collapse-icon {
    display: none;
}

.sidebar-toggle-btn .close-icon {
    display: inline-flex;
    font-size: var(--font-size-2xl);
}

@media (min-width: 768px) {
    .sidebar-toggle-btn .collapse-icon {
        display: inline-flex;
    }

    .sidebar-toggle-btn .close-icon {
        display: none;
    }
}

/* Icon and text styling */
.sidebar-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    flex-shrink: 0;
    font-size: var(--font-size-lg);
}

.sidebar-text {
    white-space: nowrap;
    overflow: hidden;
}

body.sidebar-ready .sidebar-text {
    transition: opacity var(--sidebar-transition);
}

/* Sidebar navigation */
.sidebar-nav {
    flex: 1;
    padding: var(--space-md) 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sidebar-item {
    display: block;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    color: var(--color-text-inverse);
    text-decoration: none;
    transition: background-color var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-link:hover {
    background-color: var(--color-primary-dark);
    text-decoration: none;
}

.sidebar-link.is-active {
    background-color: var(--color-primary-dark);
    font-weight: var(--font-weight-medium);
    border-left: 3px solid var(--color-text-inverse);
    padding-left: calc(var(--space-md) - 3px);
}

/* Submenu styles */
.sidebar-submenu-toggle {
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    text-align: left;
}

.sidebar-arrow {
    margin-left: auto;
    font-size: var(--font-size-sm);
}

body.sidebar-ready .sidebar-arrow {
    transition: transform var(--transition-fast);
}

.has-submenu.is-open .sidebar-arrow {
    transform: rotate(180deg);
}

.sidebar-submenu {
    list-style: none;
    margin: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
}

body.sidebar-ready .sidebar-submenu {
    transition: max-height var(--transition-base);
}

.has-submenu.is-open .sidebar-submenu {
    max-height: 300px;
}

.sidebar-sublink {
    display: block;
    padding: var(--space-sm) var(--space-md) var(--space-sm) calc(var(--space-md) + 32px);
    color: var(--color-text-inverse);
    text-decoration: none;
    font-size: var(--font-size-sm);
    opacity: 0.85;
    transition: background-color var(--transition-fast), opacity var(--transition-fast);
}

.sidebar-sublink:hover {
    background-color: var(--color-primary-dark);
    opacity: 1;
    text-decoration: none;
}

/* Sidebar footer */
.sidebar-footer {
    border-top: 1px solid var(--color-primary-dark);
    flex-shrink: 0;
}

/* Logout form styling - make button look like a link */
.sidebar-logout-form {
    margin: 0;
}

.sidebar-logout-btn {
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    text-align: left;
}

/* External toggle button (for mobile and when sidebar is completely hidden) */
.sidebar-toggle {
    position: fixed;
    top: var(--space-md);
    left: var(--space-md);
    z-index: 1001;
    display: none;
    align-items: center;
    justify-content: center;
    width: var(--tap-target);
    height: var(--tap-target);
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-md);
}

.sidebar-toggle:hover {
    background-color: var(--color-primary-dark);
}

/* Backdrop for mobile */
.sidebar-backdrop {
    position: fixed;
    inset: 0;
    z-index: 999;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--sidebar-transition), visibility var(--sidebar-transition);
}

/* ==========================================================================
   Mobile (< 768px)
   ========================================================================== */

@media (max-width: 767px) {
    /* Sidebar starts off-screen on mobile */
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }

    /* External toggle visible on mobile */
    .sidebar-toggle {
        display: flex;
    }

    /* When open on mobile */
    body.sidebar-open .sidebar {
        transform: translateX(0);
    }

    body.sidebar-open .sidebar-backdrop {
        opacity: 1;
        visibility: visible;
    }

    body.sidebar-open .sidebar-toggle {
        display: none;
    }
}

/* ==========================================================================
   Desktop (>= 768px)
   ========================================================================== */

@media (min-width: 768px) {
    /* Sidebar visible by default on desktop */
    .sidebar {
        transform: translateX(0);
    }

    /* Main content area adjustment */
    body:not(.no-nav) .app-main {
        margin-left: var(--sidebar-width);
    }

    body.sidebar-ready:not(.no-nav) .app-main {
        transition: margin-left var(--sidebar-transition);
    }

    /* Footer adjustment */
    body:not(.no-nav) .app-footer {
        margin-left: var(--sidebar-width);
    }

    body.sidebar-ready:not(.no-nav) .app-footer {
        transition: margin-left var(--sidebar-transition);
    }

    /* Hide backdrop on desktop */
    .sidebar-backdrop {
        display: none;
    }

    /* Hide external toggle on desktop */
    .sidebar-toggle {
        display: none;
    }

    /* ==========================================================================
       Collapsed state (desktop only)
       ========================================================================== */

    body.sidebar-collapsed .sidebar {
        width: var(--sidebar-width-collapsed);
    }

    body.sidebar-collapsed:not(.no-nav) .app-main {
        margin-left: var(--sidebar-width-collapsed);
    }

    body.sidebar-collapsed:not(.no-nav) .app-footer {
        margin-left: var(--sidebar-width-collapsed);
    }

    /* Hide text when collapsed */
    body.sidebar-collapsed .sidebar-text {
        opacity: 0;
        width: 0;
    }

    /* Center items when collapsed */
    body.sidebar-collapsed .sidebar-link {
        justify-content: center;
        padding-left: 0;
        padding-right: 0;
    }

    body.sidebar-collapsed .sidebar-link.is-active {
        padding-left: 0;
        border-left: none;
        border-bottom: 2px solid var(--color-text-inverse);
    }

    body.sidebar-collapsed .sidebar-header {
        justify-content: center;
        padding: var(--space-md) var(--space-sm);
    }

    body.sidebar-collapsed .sidebar-brand {
        display: none;
    }

    /* Hide submenu arrow and submenu when collapsed */
    body.sidebar-collapsed .sidebar-arrow {
        display: none;
    }

    body.sidebar-collapsed .sidebar-submenu {
        display: none;
    }

    /* Rotate toggle arrow when collapsed */
    body.sidebar-collapsed .sidebar-toggle-btn {
        transform: rotate(180deg);
    }
}