:root {
    --opsx-bg: #eef5ff;
    --opsx-surface: #ffffff;
    --opsx-border: #dbe5ef;
    --opsx-text: #17202a;
    --opsx-muted: #64748b;
    --opsx-primary: #1e9fff;
    --opsx-primary-strong: #0b79d0;
    --opsx-danger: #b42318;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--opsx-text);
    background:
        radial-gradient(circle at 15% 10%, rgba(30, 159, 255, 0.15), transparent 24rem),
        linear-gradient(135deg, #f7fbff 0%, var(--opsx-bg) 100%);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

input,
button {
    font: inherit;
}

input {
    width: 100%;
    border: 1px solid var(--opsx-border);
    border-radius: 10px;
    padding: 10px 12px;
    outline: none;
}

input:focus {
    border-color: var(--opsx-primary);
    box-shadow: 0 0 0 3px rgba(30, 159, 255, 0.14);
}

.password-field {
    position: relative;
}

.password-field input {
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    top: 50%;
    right: 8px;
    width: 34px;
    height: 34px;
    border: 0;
    border-radius: 8px;
    color: var(--opsx-muted);
    background: transparent;
    cursor: pointer;
    transform: translateY(-50%);
}

.password-toggle__icon {
    position: relative;
    display: block;
    width: 18px;
    height: 12px;
    margin: 0 auto;
    border: 1.8px solid currentColor;
    border-radius: 999px 999px 999px 999px / 760px 760px 760px 760px;
}

.password-toggle__icon::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: currentColor;
    transform: translate(-50%, -50%);
}

.password-toggle__icon::after {
    content: "";
    position: absolute;
    top: -5px;
    left: 8px;
    display: none;
    width: 2px;
    height: 22px;
    border-radius: 999px;
    background: currentColor;
    transform: rotate(45deg);
}

.password-toggle.is-visible .password-toggle__icon::after {
    display: block;
}

.password-toggle:hover,
.password-toggle:focus {
    color: var(--opsx-primary);
    background: rgba(30, 159, 255, 0.08);
    outline: none;
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}

.login-card {
    width: min(420px, 100%);
    border: 1px solid rgba(215, 226, 220, 0.9);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.1);
    padding: 26px;
}

.login-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    text-align: center;
}

.login-brand__logo {
    max-width: 156px;
    max-height: 72px;
    object-fit: contain;
}

.login-brand h2 {
    margin: 0;
    color: #0f172a;
    font-size: 24px;
    line-height: 1.25;
}

.form-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-item label {
    color: #334155;
    font-size: 14px;
    font-weight: 700;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    border: 1px solid var(--opsx-primary);
    border-radius: 10px;
    color: #fff;
    background: var(--opsx-primary);
    padding: 9px 16px;
    cursor: pointer;
    text-decoration: none;
}

.btn:hover {
    background: var(--opsx-primary-strong);
}

.meta {
    color: var(--opsx-muted);
    font-size: 13px;
}

.error {
    border: 1px solid #fecaca;
    border-radius: 10px;
    color: var(--opsx-danger);
    background: #fef2f2;
    padding: 10px 12px;
    margin-bottom: 14px;
}