/* ============================================================
   Staff sign-in. Standalone page. Builds on horizon.css tokens.
   ============================================================ */

* {
    box-sizing: border-box;
}

.login-body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
}

.login-page {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(1rem, 4vw, 3rem);
    background: var(--grad-hero);
    overflow: hidden;
    isolation: isolate;
}

/* Decorative ambient starbursts */
.login-spark {
    position: absolute;
    z-index: -1;
    color: #fff;
    opacity: 0.06;
    pointer-events: none;
    will-change: transform;
}

.login-spark--1 {
    top: -8%;
    left: -5%;
    font-size: clamp(240px, 30vw, 480px);
    animation: loginDrift 28s var(--ease) infinite alternate;
}

.login-spark--2 {
    bottom: -12%;
    right: -6%;
    font-size: clamp(280px, 36vw, 560px);
    opacity: 0.05;
    animation: loginDrift2 34s var(--ease) infinite alternate;
}

@keyframes loginDrift {
    from { transform: translate3d(0, 0, 0) rotate(0deg); }
    to   { transform: translate3d(20px, 24px, 0) rotate(20deg); }
}

@keyframes loginDrift2 {
    from { transform: translate3d(0, 0, 0) rotate(0deg); }
    to   { transform: translate3d(-22px, -16px, 0) rotate(-16deg); }
}

/* Card */
.login-card {
    width: min(100%, 960px);
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: loginRise var(--dur-3) var(--ease-out) both;
}

@keyframes loginRise {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- Brand panel ---- */
.login-brand {
    position: relative;
    padding: clamp(2rem, 4vw, 3rem);
    color: var(--on-brand);
    background: var(--grad-brand);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.login-brand::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(90% 70% at 85% 0%, rgba(255, 255, 255, 0.20), transparent 55%);
    pointer-events: none;
}

.login-brand > * {
    position: relative;
}

.login-brand__logo {
    height: 40px;
    width: auto;
    align-self: flex-start;
    margin-bottom: auto;
}

.login-brand__welcome {
    margin-top: 2.5rem;
}

.login-brand__welcome h2 {
    font-size: var(--text-2xl);
    font-weight: 800;
    letter-spacing: -0.01em;
    margin: 0;
}

.login-brand__by {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--on-brand-soft);
    margin: 0.15rem 0 0;
    letter-spacing: 0.02em;
}

.login-brand__lead {
    font-size: var(--text-sm);
    line-height: 1.6;
    color: var(--on-brand-soft);
    margin: 1rem 0 0;
    max-width: 38ch;
}

.login-brand__features {
    list-style: none;
    margin: 1.75rem 0 0;
    padding: 0;
    display: grid;
    gap: 0.85rem;
}

.login-brand__features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--on-brand-soft);
}

.login-brand__features i {
    flex: none;
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    font-size: 0.9rem;
}

.login-brand__foot {
    margin: 2.5rem 0 0;
    font-size: var(--text-xs);
    color: var(--on-brand-faint);
}

/* ---- Form panel ---- */
.login-form {
    padding: clamp(2rem, 4vw, 3rem);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-form__head {
    margin-bottom: 1.75rem;
}

.login-form__mark {
    display: inline-flex;
    color: var(--brand-500);
    font-size: 40px;
    margin-bottom: 0.85rem;
}

.login-form__head h1 {
    font-size: var(--text-2xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin: 0;
}

.login-form__head p {
    margin: 0.35rem 0 0;
    color: var(--ink-3);
    font-size: var(--text-sm);
}

.login-field {
    margin-bottom: 1rem;
}

.login-input {
    position: relative;
    display: flex;
    align-items: center;
}

.login-input > i {
    position: absolute;
    left: 0.95rem;
    color: var(--ink-3);
    font-size: 0.95rem;
    pointer-events: none;
    transition: color var(--dur-2) var(--ease);
}

.login-control {
    width: 100%;
    min-height: 50px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 0.8rem 2.8rem 0.8rem 2.65rem;
    font-family: var(--font-sans);
    font-size: var(--text-base);
    color: var(--ink);
    background: var(--surface);
    transition: border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}

.login-control::placeholder {
    color: var(--ink-3);
    opacity: 0.85;
}

.login-control:focus {
    outline: none;
    border-color: var(--brand-500);
    box-shadow: var(--ring);
}

.login-input:focus-within > i {
    color: var(--brand-600);
}

.login-pwtoggle {
    position: absolute;
    right: 0.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: none;
    background: transparent;
    color: var(--ink-3);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: color var(--dur-2) var(--ease), background-color var(--dur-2) var(--ease);
}

.login-pwtoggle:hover {
    color: var(--brand-600);
    background: var(--brand-50);
}

.login-pwtoggle:focus-visible {
    box-shadow: var(--ring);
}

/* Remember + submit */
.remember-section {
    margin: 0.5rem 0 1.5rem;
}

.custom-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    user-select: none;
    position: relative;
}

.custom-checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkmark {
    flex: none;
    height: 20px;
    width: 20px;
    background: var(--surface);
    border: 1.5px solid var(--border-strong);
    border-radius: 6px;
    transition: all var(--dur-2) var(--ease);
    position: relative;
}

.custom-checkbox:hover .checkmark {
    border-color: var(--brand-400);
}

.custom-checkbox input:focus-visible ~ .checkmark {
    box-shadow: var(--ring);
}

.custom-checkbox input:checked ~ .checkmark {
    background: var(--brand-600);
    border-color: var(--brand-600);
}

.checkmark::after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.custom-checkbox input:checked ~ .checkmark::after {
    display: block;
}

.checkbox-text {
    color: var(--ink-2);
    font-size: var(--text-sm);
    font-weight: 500;
}

.login-button {
    width: 100%;
    min-height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    background-image: var(--grad-brand-bright);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}

.login-button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-brand);
}

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

.login-button:focus-visible {
    box-shadow: var(--ring), var(--shadow-brand);
}

.login-form__help {
    margin: 1.5rem 0 0;
    text-align: center;
    color: var(--ink-3);
    font-size: var(--text-xs);
}

/* Validation */
.text-danger {
    display: block;
    color: var(--danger-ink);
    font-size: var(--text-xs);
    font-weight: 600;
    margin-top: 0.35rem;
}

.alert-danger {
    display: flex;
    gap: 0.6rem;
    background: var(--danger-bg);
    border: 1px solid rgba(217, 83, 79, 0.28);
    color: var(--danger-ink);
    padding: 0.85rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.25rem;
    font-size: var(--text-sm);
    font-weight: 500;
}

.alert-danger:empty {
    display: none;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .login-card {
        grid-template-columns: 1fr;
        max-width: 460px;
    }

    .login-brand {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .login-spark,
    .login-card {
        animation: none;
    }
}