/* ═══════════════════════════════════════════════════════════════
   Network Monitor v5.0 — Login CSS
   Login overlay, form, and light theme overrides
   ═══════════════════════════════════════════════════════════════ */

/* ── Login Overlay ── */
.login-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--b0);
    background-image:
        radial-gradient(circle at 20% 50%, rgba(45, 140, 240, .06), transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 170, .04), transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(167, 139, 250, .03), transparent 50%);
}

/* ── Login Box ── */
.login-box {
    width: 360px;
    max-width: 90%;
    padding: 32px;
    background: var(--b1);
    border: 1px solid var(--br0);
    border-radius: var(--rl);
    box-shadow: var(--shadow-modal);
    animation: fadeIn 0.4s ease;
}

.login-box h1 {
    font-size: 18px;
    font-weight: 700;
    color: var(--t0);
    margin-bottom: 4px;
    text-align: center;
}

.login-box .logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.login-box .logo .logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--cyan), var(--blue));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-right: 10px;
}

.login-box .logo .logo-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--t0);
}

.login-box p {
    font-size: 11px;
    color: var(--t3);
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.5;
}

.login-box label {
    display: block;
    font-size: 10px;
    font-weight: 500;
    color: var(--t2);
    margin-bottom: 4px;
    margin-top: 14px;
}

.login-box label:first-of-type {
    margin-top: 0;
}

.login-box input {
    width: 100%;
    padding: 9px 12px;
    border-radius: var(--rs);
    border: 1px solid var(--br1);
    background: var(--b2);
    color: var(--t0);
    font-family: var(--f);
    font-size: 12px;
    outline: none;
    transition: all var(--transition);
}

.login-box input:focus {
    border-color: var(--blue);
    background: var(--b3);
    box-shadow: 0 0 0 3px var(--bd);
}

.login-box input::placeholder {
    color: var(--t3);
}

/* ── Login Button ── */
.btn-login {
    display: block;
    width: 100%;
    padding: 10px 0;
    margin-top: 20px;
    border: none;
    border-radius: var(--rs);
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    color: #fff;
    font-family: var(--f);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-transform: uppercase;
    letter-spacing: .06em;
}

.btn-login:hover {
    opacity: .9;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(45, 140, 240, .3);
}

.btn-login:active {
    transform: translateY(0);
}

.btn-login:disabled {
    opacity: .5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ── Login Error ── */
.login-error {
    padding: 8px 12px;
    margin-top: 12px;
    border-radius: var(--rs);
    background: var(--rd);
    border: 1px solid rgba(244, 63, 94, .2);
    color: var(--red);
    font-size: 10px;
    text-align: center;
    display: none;
    animation: fadeIn 0.2s ease;
}

.login-error.show {
    display: block;
}

/* ── Light Theme Overrides ── */
html[data-theme="light"] .login-overlay {
    background: var(--b0);
    background-image:
        radial-gradient(circle at 20% 50%, rgba(45, 140, 240, .04), transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 170, .03), transparent 50%);
}

html[data-theme="light"] .login-box {
    box-shadow: 0 8px 32px rgba(0, 0, 0, .08);
}

html[data-theme="light"] .login-box input {
    background: var(--b0);
}

html[data-theme="light"] .login-box input:focus {
    background: #fff;
}

html[data-theme="light"] .btn-login:hover {
    box-shadow: 0 4px 16px rgba(45, 140, 240, .2);
}