/* Layout styles - Sidebar, main content, header */
.app-container {
    display: block;
    width: 100%;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    background: var(--dark-green);
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: 260px;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 12px;
}

.university-seal-small {
    flex-shrink: 0;
}

.seal-circle-small {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--medium-green), var(--dark-green));
    border: 2px solid var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
}

.seal-star-small {
    color: var(--gold);
    font-size: 22px;
}

.sidebar-header h2 {
    font-size: 16px;
    line-height: 1.3;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 10px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--white);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-left-color: var(--gold);
}

.nav-item.active {
    background: rgba(212, 175, 55, 0.15);
    border-left-color: var(--gold);
    font-weight: 600;
}

.nav-icon {
    margin-right: 10px;
    font-size: 18px;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-logout {
    width: 100%;
    padding: 10px;
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--gold);
}

/* Main Content */
.main-content {
    margin-left: 260px;
    width: calc(100% - 260px);
    min-height: 100vh;
}

.main-header {
    background: var(--white);
    padding: 20px 30px;
    border-bottom: 1px solid var(--gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--dark-green);
}

.header-user {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.user-name {
    font-weight: 600;
    color: var(--dark-green);
}

.user-role {
    font-size: 13px;
    color: var(--dark-gray);
    background: var(--light-gray);
    padding: 2px 10px;
    border-radius: 12px;
}

.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
}

/* Institutional navigation polish */
.sidebar {
    background: linear-gradient(180deg, var(--dark-green) 0%, #0D241B 100%);
}

.sidebar-header {
    min-height: 92px;
}

.sidebar-subtitle {
    color: rgba(255, 255, 255, 0.72);
    font-size: 11px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-top: 3px;
}

.seal-star-small {
    font-weight: 800;
    font-size: 18px;
}

.nav-icon {
    width: 24px;
    text-align: center;
    color: var(--gold);
    font-weight: 700;
}

.main-header {
    box-shadow: 0 2px 14px rgba(18, 55, 40, 0.06);
}