:root {
    --primary: #0066FF;
    --on-primary: #FFFFFF;
    --error: #BA1A1A;
    --error-container: #FFDAD6;
    --surface: #F9F9FC;
    --on-surface: #1A1C1E;
    --on-surface-variant: #414754;
    --surface-container: #EEEFF0;
    --surface-container-lowest: #FFFFFF;
    --outline: #717786;
}

.login-page {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    background: var(--surface, #f5f6fa);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    width: 100%;
    max-width: 22rem;
}

.login-header {
    text-align: center;
    margin-bottom: 0.75rem;
}

.login-logo-link {
    display: block;
    margin: 0 auto 0.25rem;
    max-width: 11rem;
    line-height: 0;
    transition: opacity 0.2s ease;
}

.login-logo-link:active {
    opacity: 0.6;
}

.login-logo-img {
    display: block;
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 3.25rem;
    min-height: 2rem;
    margin: 0 auto;
    object-fit: contain;
    vertical-align: middle;
}

.login-title {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--on-surface-variant, #64748b);
    margin: 0.75rem 0 0;
    letter-spacing: 0;
    line-height: 1.4;
}

.login-subtitle {
    margin: 0.5rem 0 0;
    font-size: 0.75rem;
    color: var(--on-surface-variant, #94a3b8);
    line-height: 1.5;
}

.login-field {
    position: relative;
}

.login-input {
    width: 100%;
    height: 3.25rem;
    padding: 0 1rem 0 2.75rem;
    font-size: 0.9375rem;
    color: var(--on-surface, #1e293b);
    background: var(--surface-container, #f1f5f9);
    border: 1.5px solid transparent;
    border-radius: 0.75rem;
    outline: none;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
    font-family: inherit;
}

.login-field-code .login-input {
    padding-right: 6.5rem;
}

.login-input:focus {
    border-color: var(--primary, #0066ff);
    background: var(--surface-container-lowest, #fff);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.login-label {
    position: absolute;
    left: 2.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.875rem;
    color: var(--on-surface-variant, #64748b);
    pointer-events: none;
    transition: all 0.2s ease;
    background: transparent;
    padding: 0 0.25rem;
}

.login-input:focus ~ .login-label,
.login-input:not(:placeholder-shown) ~ .login-label {
    top: 0;
    transform: translateY(-50%);
    left: 0.75rem;
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--primary, #0066ff);
    background: var(--surface, #f5f6fa);
    padding: 0 0.375rem;
}

.login-input:not(:focus):not(:placeholder-shown) ~ .login-label {
    color: var(--on-surface-variant, #64748b);
}

.login-field-icon {
    position: absolute;
    left: 0.875rem;
    top: 50%;
    width: 1.25rem;
    height: 1.25rem;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--on-surface-variant, #64748b);
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.login-input:focus ~ .login-field-icon {
    opacity: 0.9;
    color: var(--primary, #0066ff);
}

.login-code-btn {
    position: absolute;
    right: 0.375rem;
    top: 50%;
    transform: translateY(-50%);
    height: 2.25rem;
    padding: 0 0.75rem;
    border: none;
    border-radius: 0.5rem;
    background: var(--primary, #0066ff);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: opacity 0.2s ease;
}

.login-code-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.login-code-btn:not(:disabled):active {
    opacity: 0.85;
}

.login-btn {
    width: 100%;
    height: 3rem;
    background: var(--primary, #0066ff);
    color: var(--on-primary, #fff);
    border: none;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.login-btn:active {
    transform: scale(0.98);
    opacity: 0.9;
}

.login-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.login-btn .icon-svg {
    width: 18px;
    height: 18px;
}

.login-error {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--error, #dc2626);
    padding: 0.625rem;
    border-radius: 0.5rem;
    background: var(--error-container, #fef2f2);
    display: none;
}

.login-error.visible {
    display: block;
    animation: loginShake 0.3s ease;
}

.login-denied {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.875rem;
    padding: 1.25rem 1rem 1rem;
    border-radius: 1rem;
    background: linear-gradient(180deg, #f0f6ff 0%, #ffffff 100%);
    border: 1px solid rgba(0, 102, 255, 0.12);
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.08);
}

.login-denied-text {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.65;
    color: var(--on-surface, #1e293b);
    font-weight: 500;
}

.login-denied-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    width: 100%;
    min-height: 2.75rem;
    padding: 0.625rem 1rem;
    border-radius: 0.75rem;
    background: var(--primary, #0066ff);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.28);
    transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

.login-denied-btn:hover {
    background: #0052cc;
    box-shadow: 0 6px 16px rgba(0, 102, 255, 0.32);
    color: #fff;
}

.login-denied-btn:active {
    transform: scale(0.98);
}

.login-denied-btn-icon {
    width: 1rem;
    height: 1rem;
    opacity: 0.95;
}

@keyframes loginShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

@media (min-width: 769px) {
    #appWrap .login-page {
        position: relative;
        min-height: calc(100vh - 0px);
    }
}