* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top, #f5f8ff 0%, #e9efff 50%, #f9fbff 100%);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #1a243b;
}

.page-wrap {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 16px 35px rgba(30, 39, 72, 0.16);
    border: 1px solid #edf1f8;
    padding: 30px;
}

.brand {
    text-align: center;
    margin-bottom: 20px;
}

.brand-icon {
    font-size: 32px;
    width: 60px;
    height: 60px;
    line-height: 60px;
    margin: 0 auto 8px;
    border-radius: 50%;
    background: #eef3ff;
    color: #3f6fd1;
}

.brand h1 {
    font-size: 26px;
    margin-bottom: 6px;
}

.brand p {
    color: #5f6c88;
    font-size: 14px;
}

.tab-menu {
    display: flex;
    border-bottom: 1px solid #e5e9f4;
    margin: 15px 0 20px;
}

.tab {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    background: transparent;
    border: none;
    color: #76829d;
    font-weight: 600;
    padding: 10px 0;
    cursor: pointer;
    transition: color 0.2s ease;
}

.sidebar,
.overview-panel {
    background: #ffffff;
    display: flex;
    flex-direction: column;
    padding: 14px;
}

.sidebar {
    border-right: 1px solid #e9edf5;
}

.tab.active,
.tab:hover {
    color: #315ad7;
}

.login-form label {
    display: block;
    margin-bottom: 14px;
    font-size: 14px;
    color: #475271;
}

.login-form label span {
    display: block;
    margin-bottom: 6px;
}

.login-form input {
    width: 100%;
    padding: 11px 13px;
    border: 1px solid #d7dff2;
    border-radius: 8px;
    font-size: 14px;
    color: #25334d;
    background: #ffffff;
}

.login-form input:focus {
    outline: none;
    border-color: #7ea2ff;
    box-shadow: 0 0 0 3px rgba(77, 119, 248, 0.15);
}

.submit-btn {
    width: 100%;
    background: #eaf1ff;
    border: 1px solid #c5d4ff;
    color: #1f3f8a;
    font-weight: 700;
    padding: 12px;
    border-radius: 8px;
    margin-top: 12px;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

.submit-btn:hover {
    background: #d7e4ff;
    color: #0f2e74;
}

.secondary {
    text-align: center;
    color: #8b97b5;
    font-size: 13px;
    margin-top: 16px;
}