/* =========================================================
   Ollato Student Sidebar Theme
   Solid navy, blue, orange and soft-white color palette
   ========================================================= */

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 1000;

    width: 286px;
    min-height: 100vh;
    padding: 22px;

    display: flex;
    flex-direction: column;
    gap: 18px;

    overflow-y: auto;

    color: #ffffff;
    background-color: #10264b;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 10px 0 30px rgba(16, 38, 75, 0.16);

    font-family: Arial, Helvetica, sans-serif;
    transition: transform 0.3s ease;
}

/* Scrollbar */
.sidebar {
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.28) transparent;
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background-color: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.24);
    border-radius: 10px;
}

/* Brand */
.brand-block {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 4px 2px 10px;
}

.brand-logo-sidebar {
    width: 52px;
    height: 52px;
    flex: 0 0 52px;

    display: grid;
    place-items: center;

    color: #10264b;
    background-color: #ffffff;
    border: 1px solid #dbe7f2;
    border-radius: 14px;

    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.01em;

    box-shadow: 0 8px 18px rgba(5, 20, 45, 0.2);
}

.brand-block h1 {
    margin: 0;

    color: #ffffff;
    font-size: 21px;
    line-height: 1.25;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.brand-block p {
    margin: 4px 0 0;

    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
    line-height: 1.4;
    font-weight: 400;
}

/* Student card */
.student-mini-card {
    display: flex;
    align-items: center;
    gap: 12px;

    padding: 14px;

    background-color: #173f70;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
}

.student-avatar {
    width: 46px;
    height: 46px;
    flex: 0 0 46px;

    display: grid;
    place-items: center;

    color: #ffffff;
    background-color: #f48d02;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 13px;

    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
}

.student-mini-card h2 {
    margin: 0;

    color: #ffffff;
    font-size: 14px;
    line-height: 1.4;
    font-weight: 500;
}

/* Navigation */
.side-nav {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.side-link {
    position: relative;

    min-height: 50px;
    padding: 9px 12px;

    display: flex;
    align-items: center;
    gap: 12px;

    color: rgba(255, 255, 255, 0.76);
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: 13px;

    text-decoration: none;
    font-size: 14px;
    font-weight: 500;

    transition:
        color 0.2s ease,
        background-color 0.2s ease,
        border-color 0.2s ease,
        transform 0.2s ease;
}

.side-link > span {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;

    display: grid;
    place-items: center;

    color: rgba(255, 255, 255, 0.92);
    background-color: #214d7d;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;

    font-size: 15px;
    font-weight: 500;

    transition:
        color 0.2s ease,
        background-color 0.2s ease,
        border-color 0.2s ease;
}

.side-link:hover {
    color: #ffffff;
    background-color: #173f70;
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateX(2px);
}

.side-link:hover > span {
    background-color: #28598e;
    border-color: rgba(255, 255, 255, 0.18);
}

/* Active navigation item */
.side-link.active {
    color: #ffffff;
    background-color: #2867a5;
    border-color: #3f7db8;
    box-shadow: 0 8px 18px rgba(5, 20, 45, 0.2);
}

.side-link.active::before {
    content: "";

    position: absolute;
    top: 50%;
    left: -22px;

    width: 5px;
    height: 30px;

    background-color: #f48d02;
    border-radius: 0 8px 8px 0;

    transform: translateY(-50%);
}

.side-link.active > span {
    color: #ffffff;
    background-color: #21598f;
    border: 2px solid #f48d02;
}

/* Logout */
.side-link[data-page="logout"] {
    margin-top: 4px;
    color: #ffd7d7;
}

.side-link[data-page="logout"]:hover,
.side-link[data-page="logout"].active {
    color: #ffffff;
    background-color: #b83232;
    border-color: #d45a5a;
}

.side-link[data-page="logout"].active::before {
    background-color: #ffd0d0;
}

.side-link[data-page="logout"] > span {
    background-color: rgba(184, 50, 50, 0.28);
}

/* Help card */
.sidebar-help {
    margin-top: auto;
    padding: 18px;

    background-color: #173f70;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 17px;
}

.help-symbol {
    width: 42px;
    height: 42px;

    display: grid;
    place-items: center;

    color: #ffffff;
    background-color: #f48d02;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;

    font-size: 16px;
    font-weight: 600;
}

.sidebar-help h3 {
    margin: 13px 0 6px;

    color: #ffffff;
    font-size: 15px;
    line-height: 1.4;
    font-weight: 600;
}

.sidebar-help p {
    margin: 0 0 13px;

    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
    line-height: 1.6;
    font-weight: 400;
}

.sidebar-help a {
    display: inline-flex;
    align-items: center;
    gap: 6px;

    color: #ffffff;
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;

    transition: color 0.2s ease;
}

.sidebar-help a:hover {
    color: #ffc56d;
}

/* Mobile overlay */
.sidebar-overlay {
    display: none;
}

@media (max-width: 900px) {
    .sidebar {
        width: 282px;
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .sidebar-overlay.show {
        position: fixed;
        inset: 0;
        z-index: 999;

        display: block;

        background-color: rgba(5, 20, 45, 0.68);
    }
}

@media (max-width: 420px) {
    .sidebar {
        width: min(282px, 88vw);
        padding: 18px;
    }

    .brand-block h1 {
        font-size: 20px;
    }
}