IncomeTaxSystem/static/css/index.css

/* ================= RESET ================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", sans-serif;
}

body {
    background-color: #f4f7f6;
    display: flex;
}

/* ================= NAVBAR ================= */
.navbar {
    width: 100%;
    height: 60px;
    background-color: #007bff;
    display: flex;
    align-items: center;
    padding: 0 20px;
    position: fixed;
    top: 0;
    left: 0;
    color: white;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-logo {
    height: 46px;
    filter: brightness(0) invert(1);
}

.toggle-btn {
    font-size: 26px;
    cursor: pointer;
    display: none;
    /* hidden on desktop */
}

/* ================= SIDEBAR ================= */
.sidebar {
    width: 250px;
    background: #ffffff;
    height: calc(100vh - 60px);
    position: fixed;
    top: 60px;
    left: 0;
    padding-top: 20px;
    overflow-y: auto;
    border-right: 1px solid #e5d1be;
    transition: 0.3s;
    display: flex;
    flex-direction: column;
}

.sidebar h2 {
    color: #007bff;
    text-align: center;
    margin-bottom: 20px;
    font-size: 22px;
}

/* Menu buttons */
.menu-btn {
    padding: 14px 20px;
    font-size: 17px;
    color: #007bff;
    cursor: pointer;
    border-bottom: 1px solid #f0d6c6;
    transition: 0.2s;
}

.menu-btn:hover {
    background: #88ccfa;
}

/* Submenu */
.submenu {
    display: none;
    background: #ffffff;
}

.submenu a {
    display: block;
    padding: 12px 35px;
    color: #007bff;
    text-decoration: none;
    border-bottom: 1px solid #f3cab1;
    transition: 0.2s;
}

.submenu a:hover {
    background: #b3dbf7;
}

/* Logout */
.sidebar-logout {
    margin-top: auto;
    padding: 12px;
    background: #007bff;
    display: flex;
    justify-content: center;
    border-radius: 6px;
}

.sidebar-logout:hover {
    background: #a8d8f8;
}

.logout-icon {
    width: 22px;
    height: 22px;
}

/* ================= MAIN ================= */
.main {
    margin-left: 250px;
    margin-top: 60px;
    padding: 30px;
    width: calc(100% - 250px);
}

/* Container */
.container {
    background: white;
    padding: 40px;
    border-radius: 12px;
    max-width: 900px;
    margin: auto;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.07);
}

/* ================= TABLET ================= */
@media (max-width: 992px) {
    .nav-left h3 {
        font-size: 16px;
        max-width: 200px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .nav-logo {
        height: 40px;
    }

    /* sidebar still visible */
    .sidebar {
        width: 220px;
    }

    .main {
        margin-left: 220px;
        width: calc(100% - 220px);
    }
}

/* ================= MOBILE ================= */
@media (max-width: 768px) {

    body {
        display: block;
    }

    /* Show toggle only on mobile */
    .toggle-btn {
        display: block;
    }

    .nav-left h3 {
        font-size: 14px;
        max-width: 160px;
    }

    .nav-logo {
        height: 36px;
    }

    /* Sidebar as drawer */
    .sidebar {
        left: -100%;
        width: 85%;
        max-width: 280px;
        z-index: 2000;
        box-shadow: 4px 0 15px rgba(0, 0, 0, 0.2);
    }

    .sidebar.show {
        left: 0;
    }

    /* Main content full width */
    .main {
        margin-left: 0;
        width: 100%;
        margin-top: 70px;
        padding: 15px;
    }

    .container {
        padding: 20px;
        width: 100%;
    }
}

/* ================= VERY SMALL PHONES ================= */
@media (max-width: 480px) {
    .nav-left h3 {
        display: none;
    }
}