/**
 * Yapuka Side Menu - Professional Corporate Design
 * @package mod_yapukasidemenu
 */

:root {
    --ysm-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --ysm-primary: #1e3a5f;
    --ysm-primary-light: #2d5a8a;
    --ysm-accent: #c9a227;
    --ysm-text: #333333;
    --ysm-text-light: #666666;
    --ysm-bg: #ffffff;
    --ysm-bg-hover: #f8f9fa;
    --ysm-bg-active: #f0f4f8;
    --ysm-border: #e0e5eb;
    --ysm-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --ysm-radius: 8px;
    --ysm-transition: 0.2s ease;
}

/* Base container */
.yapuka-sidemenu {
    width: 100%;
    font-family: var(--ysm-font-family);
    font-size: 0.9375rem;
    line-height: 1.5;
}

/* Root list */
.yapuka-sidemenu__list {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
}

.yapuka-sidemenu__list--root {
    background: var(--ysm-bg);
    border-radius: var(--ysm-radius);
    box-shadow: var(--ysm-shadow);
    overflow: hidden;
}

/* Submenus - hidden by default */
.yapuka-sidemenu__list--sub {
    display: none;
    background: linear-gradient(to right, var(--ysm-bg-hover), var(--ysm-bg));
    border-left: 3px solid var(--ysm-accent);
    margin-left: 0;
}

.yapuka-sidemenu__list--sub.is-open {
    display: block;
}

/* Items */
.yapuka-sidemenu__item {
    width: 100%;
    border-bottom: 1px solid var(--ysm-border);
    position: relative;
}

.yapuka-sidemenu__item:last-child {
    border-bottom: none;
}

/* Link wrapper */
.yapuka-sidemenu__link-wrapper {
    display: flex;
    align-items: stretch;
    width: 100%;
}

/* Links */
.yapuka-sidemenu__link {
    display: flex;
    align-items: center;
    flex: 1;
    padding: 1rem 1.25rem;
    color: var(--ysm-text);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--ysm-transition);
    position: relative;
}

.yapuka-sidemenu__link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: transparent;
    transition: background var(--ysm-transition);
}

.yapuka-sidemenu__link:hover {
    background: var(--ysm-bg-hover);
    color: var(--ysm-primary);
    text-decoration: none;
}

.yapuka-sidemenu__link:hover::before {
    background: var(--ysm-accent);
}

.yapuka-sidemenu__link:focus {
    outline: none;
    background: var(--ysm-bg-hover);
}

.yapuka-sidemenu__link:focus-visible {
    box-shadow: inset 0 0 0 2px var(--ysm-primary-light);
}

/* Text */
.yapuka-sidemenu__text {
    flex: 1;
}

/* Toggle button */
.yapuka-sidemenu__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    min-height: 100%;
    padding: 0;
    border: none;
    border-left: 1px solid var(--ysm-border);
    background: transparent;
    color: var(--ysm-text-light);
    cursor: pointer;
    transition: all var(--ysm-transition);
}

.yapuka-sidemenu__toggle:hover {
    background: var(--ysm-bg-hover);
    color: var(--ysm-primary);
}

.yapuka-sidemenu__toggle:focus {
    outline: none;
}

.yapuka-sidemenu__toggle:focus-visible {
    box-shadow: inset 0 0 0 2px var(--ysm-primary-light);
}

.yapuka-sidemenu__toggle[aria-expanded="true"] {
    background: var(--ysm-primary);
    color: #ffffff;
}

/* Chevron */
.yapuka-sidemenu__chevron {
    transition: transform 0.25s ease;
}

.yapuka-sidemenu__toggle[aria-expanded="true"] .yapuka-sidemenu__chevron {
    transform: rotate(180deg);
}

/* Headings */
.yapuka-sidemenu__heading {
    display: flex;
    align-items: center;
    flex: 1;
    padding: 0.875rem 1.25rem;
    color: var(--ysm-primary);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    background: var(--ysm-bg-hover);
}

/* Separators */
.yapuka-sidemenu__item--separator {
    padding: 0;
}

.yapuka-sidemenu__separator-text {
    display: block;
    padding: 0.625rem 1.25rem;
    color: var(--ysm-text-light);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--ysm-bg-hover);
    border-top: 1px solid var(--ysm-border);
    border-bottom: 1px solid var(--ysm-border);
}

.yapuka-sidemenu__separator-line {
    margin: 0;
    border: none;
    border-top: 1px solid var(--ysm-border);
}

/* Active & Current states */
.yapuka-sidemenu__item--current > .yapuka-sidemenu__link-wrapper > .yapuka-sidemenu__link {
    color: var(--ysm-primary);
    font-weight: 600;
    background: var(--ysm-bg-active);
}

.yapuka-sidemenu__item--current > .yapuka-sidemenu__link-wrapper > .yapuka-sidemenu__link::before {
    background: var(--ysm-accent);
}

.yapuka-sidemenu__item--active > .yapuka-sidemenu__link-wrapper > .yapuka-sidemenu__link {
    color: var(--ysm-primary);
    background: var(--ysm-bg-active);
}

.yapuka-sidemenu__item--active > .yapuka-sidemenu__link-wrapper > .yapuka-sidemenu__link::before {
    background: var(--ysm-primary-light);
}

/* Parent open state */
.yapuka-sidemenu__item--parent.is-open > .yapuka-sidemenu__link-wrapper {
    background: var(--ysm-bg-hover);
}

.yapuka-sidemenu__item--parent.is-open > .yapuka-sidemenu__link-wrapper > .yapuka-sidemenu__link::before {
    background: var(--ysm-accent);
}

/* Nested levels - indentation and styling */
.yapuka-sidemenu__list--sub .yapuka-sidemenu__item {
    border-bottom-color: rgba(0, 0, 0, 0.05);
}

.yapuka-sidemenu__list--sub .yapuka-sidemenu__link {
    padding-left: 2rem;
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--ysm-text-light);
}

.yapuka-sidemenu__list--sub .yapuka-sidemenu__link:hover {
    color: var(--ysm-primary);
    background: rgba(0, 0, 0, 0.03);
}

/* Level 3+ deeper indentation */
.yapuka-sidemenu__list--sub .yapuka-sidemenu__list--sub .yapuka-sidemenu__link {
    padding-left: 3rem;
    font-size: 0.8125rem;
}

.yapuka-sidemenu__list--sub .yapuka-sidemenu__list--sub .yapuka-sidemenu__list--sub .yapuka-sidemenu__link {
    padding-left: 4rem;
}

/* Submenu current/active in nested */
.yapuka-sidemenu__list--sub .yapuka-sidemenu__item--current > .yapuka-sidemenu__link-wrapper > .yapuka-sidemenu__link,
.yapuka-sidemenu__list--sub .yapuka-sidemenu__item--active > .yapuka-sidemenu__link-wrapper > .yapuka-sidemenu__link {
    color: var(--ysm-primary);
    font-weight: 600;
    background: rgba(30, 58, 95, 0.08);
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .yapuka-sidemenu__link {
        padding: 1.125rem 1rem;
        font-size: 1rem;
    }

    .yapuka-sidemenu__toggle {
        width: 56px;
    }

    .yapuka-sidemenu__list--sub .yapuka-sidemenu__link {
        padding-left: 1.75rem;
        font-size: 0.9375rem;
    }

    .yapuka-sidemenu__list--sub .yapuka-sidemenu__list--sub .yapuka-sidemenu__link {
        padding-left: 2.5rem;
    }
}

/* Smooth animations */
.yapuka-sidemenu__list--sub {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.2s ease;
}

.yapuka-sidemenu__list--sub.is-open {
    display: block;
    max-height: 2000px;
    opacity: 1;
    transition: max-height 0.4s ease, opacity 0.2s ease 0.1s;
}

/* Print styles */
@media print {
    .yapuka-sidemenu {
        box-shadow: none;
    }

    .yapuka-sidemenu__toggle {
        display: none;
    }

    .yapuka-sidemenu__list--sub {
        display: block !important;
        max-height: none !important;
        opacity: 1 !important;
    }
}