:root {
    --pos-login-primary: #3498db;
    --pos-login-primary-dark: #2980b9;
    --pos-login-primary-soft: rgba(52, 152, 219, 0.14);
    --pos-login-ink: #1d2630;
    --pos-login-muted: #5b6b79;
    --pos-login-border: #dfe7ef;
    --pos-login-danger: #dc2626;
    --pos-login-bg: #eef5fb;
    --pos-login-surface: #ffffff;
    --pos-login-touch: 52px;
    --pos-login-radius: 16px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body.pos-login-page {
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    color: var(--pos-login-ink);
    background:
        radial-gradient(ellipse 90% 70% at 50% -15%, rgba(52, 152, 219, 0.28), transparent 58%),
        linear-gradient(180deg, #f7fbfe 0%, var(--pos-login-bg) 100%);
    -webkit-font-smoothing: antialiased;
}

.pos-login-shell {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
}

.pos-login-card {
    width: 100%;
    max-width: 420px;
    background: var(--pos-login-surface);
    border: 1px solid rgba(52, 152, 219, 0.14);
    border-radius: var(--pos-login-radius);
    box-shadow:
        0 1px 2px rgba(29, 38, 48, 0.04),
        0 16px 40px rgba(29, 38, 48, 0.08);
    padding: 2.15rem 1.85rem 1.6rem;
}

.pos-login-header {
    text-align: center;
    margin-bottom: 1.85rem;
}

.pos-login-logo {
    display: block;
    margin: 0 auto 1.05rem;
    max-height: 64px;
    width: auto;
    object-fit: contain;
}

.pos-login-title {
    margin: 0 0 0.35rem;
    font-size: 1.55rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--pos-login-ink);
}

.pos-login-subtitle {
    margin: 0;
    font-size: 0.95rem;
    color: var(--pos-login-muted);
}

.pos-login-form {
    display: flex;
    flex-direction: column;
    gap: 1.05rem;
}

.pos-login-field {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.pos-login-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--pos-login-ink);
}

.pos-login-input-wrap {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    min-height: var(--pos-login-touch);
    padding: 0 0.55rem 0 0.9rem;
    border: 1px solid var(--pos-login-border);
    border-radius: 12px;
    background: #f7fafc;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.pos-login-input-wrap:focus-within {
    border-color: var(--pos-login-primary);
    box-shadow: 0 0 0 3px var(--pos-login-primary-soft);
    background: #fff;
}

.pos-login-icon {
    width: 1.2rem;
    height: 1.2rem;
    flex-shrink: 0;
    fill: currentColor;
    color: #7a8a9a;
}

.pos-login-input-wrap:focus-within .pos-login-icon {
    color: var(--pos-login-primary);
}

.pos-login-input {
    flex: 1;
    min-width: 0;
    border: 0;
    outline: none;
    background: transparent;
    font: inherit;
    font-size: 1rem;
    color: var(--pos-login-ink);
    min-height: calc(var(--pos-login-touch) - 2px);
    padding: 0;
}

.pos-login-input::placeholder {
    color: #9aa7b5;
}

.pos-login-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: #7a8a9a;
    cursor: pointer;
    touch-action: manipulation;
}

.pos-login-toggle .pos-login-icon {
    width: 1.25rem;
    height: 1.25rem;
    color: inherit;
}

.pos-login-toggle .pos-login-icon--eye-off {
    display: none;
}

.pos-login-toggle.is-showing .pos-login-icon--eye {
    display: none;
}

.pos-login-toggle.is-showing .pos-login-icon--eye-off {
    display: block;
}

.pos-login-toggle:hover,
.pos-login-toggle:focus-visible {
    color: var(--pos-login-primary);
    background: var(--pos-login-primary-soft);
    outline: none;
}

.pos-login-error {
    font-size: 0.8125rem;
    color: var(--pos-login-danger);
}

.pos-login-alert {
    margin: 0;
    padding: 0.7rem 0.8rem;
    border-radius: 10px;
    background: #fdecec;
    color: var(--pos-login-danger);
    font-size: 0.875rem;
}

.pos-login-alert:empty {
    display: none;
}

.pos-login-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-height: var(--pos-login-touch);
    margin-top: 0.35rem;
    padding: 0 1.25rem;
    border: 0;
    border-radius: 12px;
    background: var(--pos-login-primary);
    color: #fff;
    font: inherit;
    font-size: 1.02rem;
    font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
    box-shadow: 0 8px 18px rgba(52, 152, 219, 0.28);
    transition: background-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.pos-login-submit .pos-login-icon--submit {
    width: 1.15rem;
    height: 1.15rem;
    color: #fff;
}

.pos-login-submit:hover {
    background: var(--pos-login-primary-dark);
    box-shadow: 0 10px 22px rgba(41, 128, 185, 0.32);
}

.pos-login-submit:active {
    transform: translateY(1px);
}

.pos-login-footer {
    margin: 1.55rem 0 0;
    text-align: center;
    font-size: 0.8125rem;
    color: var(--pos-login-muted);
}

@media (max-width: 480px) {
    .pos-login-card {
        padding: 1.6rem 1.2rem 1.3rem;
        border-radius: 14px;
    }

    .pos-login-title {
        font-size: 1.4rem;
    }

    .pos-login-logo {
        max-height: 56px;
    }
}

@media (min-width: 768px) {
    .pos-login-card {
        max-width: 440px;
        padding: 2.35rem 2.1rem 1.75rem;
    }
}