:root {
    --auth-surface: #ffffff;
    --auth-surface-soft: rgba(255, 255, 255, 0.78);
    --auth-border: hsla(var(--ink-dark) / 0.08);
    --auth-border-strong: hsla(var(--lilac-primary) / 0.16);
    --auth-shadow-soft: 0 18px 38px rgba(15, 23, 42, 0.08), 0 6px 18px rgba(15, 23, 42, 0.04);
    --auth-shadow-strong: 0 28px 64px rgba(15, 23, 42, 0.12), 0 10px 28px rgba(15, 23, 42, 0.06);
}

.auth-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at 14% 12%, hsla(var(--lilac-primary) / 0.08), transparent 340px),
        radial-gradient(circle at 86% 18%, hsla(var(--leaf-primary) / 0.08), transparent 320px),
        linear-gradient(180deg, #ffffff 0%, #f8fafc 44%, #ffffff 100%);
    color: hsl(var(--ink-dark));
    position: relative;
}

.auth-grid-bg {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(hsla(var(--lilac-primary) / 0.025) 1px, transparent 1px),
        linear-gradient(90deg, hsla(var(--lilac-primary) / 0.025) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(circle at 50% 18%, black 0%, transparent 72%);
    pointer-events: none;
    z-index: 0;
    opacity: 0.7;
}

.auth-topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    border-bottom: 1px solid hsla(var(--ink-dark) / 0.04);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
}

.auth-topbar .brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: hsl(var(--ink-dark));
    font-family: 'Outfit', sans-serif;
    font-size: 1.35rem;
    font-weight: 900;
    letter-spacing: -0.03em;
}

.auth-topbar .brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.55rem;
    height: 2.55rem;
    border-radius: 0.95rem;
    background: linear-gradient(135deg, hsl(var(--lilac-primary)), hsl(var(--lilac-dark)));
    color: #fff;
    box-shadow: 0 12px 24px hsla(var(--lilac-primary) / 0.24);
    font-size: 1rem;
}

.auth-topbar-inner {
    min-height: 84px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.auth-topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.auth-topbar-link {
    color: hsl(var(--muted-grey));
    text-decoration: none;
    font-weight: 700;
    font-size: 0.92rem;
    transition: var(--transition-smooth);
}

.auth-topbar-link:hover {
    color: hsl(var(--lilac-dark));
}

.auth-ghost-btn {
    border-radius: 14px;
    padding: 0.8rem 1.15rem;
    border: 1px solid var(--auth-border);
    background: rgba(255, 255, 255, 0.72);
    color: hsl(var(--ink-dark));
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
}

.auth-ghost-btn:hover {
    border-color: hsla(var(--lilac-primary) / 0.22);
    color: hsl(var(--lilac-dark));
}

.auth-stage {
    position: relative;
    z-index: 1;
    min-height: calc(100vh - 84px);
    padding: 1.75rem 0 2.5rem;
    display: flex;
    align-items: center;
}

.auth-stage-inner {
    display: flex;
    justify-content: center;
}

.auth-panel {
    min-width: 0;
    width: 100%;
    max-width: 560px;
}

.auth-card-shell {
    position: relative;
    width: 100%;
    background: var(--auth-surface-soft);
    border: 1px solid var(--auth-border);
    border-radius: 32px;
    box-shadow: var(--auth-shadow-strong);
    backdrop-filter: blur(18px);
    overflow: hidden;
    animation: auth-card-settle 0.75s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.auth-card-shell {
    padding: 2.15rem 2.15rem 1.9rem;
}

.auth-card-shell::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0) 28%),
        radial-gradient(circle at top center, hsla(var(--lilac-primary) / 0.05), transparent 42%);
    pointer-events: none;
}

.auth-view {
    display: none;
}

.auth-view.active {
    display: block;
    animation: auth-fade-up 0.3s ease;
}

.auth-copy h1 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(2rem, 3.2vw, 2.65rem);
    line-height: 1.02;
    font-weight: 900;
    letter-spacing: -0.04em;
    margin-bottom: 0.6rem;
}

.auth-copy p {
    color: hsl(var(--muted-grey));
    font-size: 0.95rem;
    line-height: 1.5;
    max-width: 22rem;
}

.auth-form {
    margin-top: 1.55rem;
}

.auth-field + .auth-field,
.auth-form-row,
.auth-submit-btn,
.auth-status {
    margin-top: 0.9rem;
}

.auth-field label {
    display: inline-block;
    margin-bottom: 0.42rem;
    font-size: 0.84rem;
    font-weight: 800;
    color: hsl(var(--ink-dark));
}

.auth-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
}

.auth-input-wrap {
    position: relative;
    transition: transform 0.28s ease, filter 0.28s ease;
}

.auth-input-wrap::after {
    content: '';
    position: absolute;
    left: 1rem;
    right: 1rem;
    bottom: 0.8rem;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, hsl(var(--lilac-primary)), hsl(var(--leaf-primary)));
    transform: scaleX(0.08);
    transform-origin: left center;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.auth-input-wrap input {
    width: 100%;
    min-height: 58px;
    border-radius: 18px;
    border: 1px solid hsla(var(--ink-dark) / 0.075);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(250, 251, 255, 0.9));
    padding: 0 1rem 0 3.2rem;
    font-size: 0.96rem;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    color: hsl(var(--ink-light));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6), 0 1px 0 rgba(15, 23, 42, 0.02);
    transition: var(--transition-smooth);
}

.auth-input-wrap input::placeholder {
    color: #94a3b8;
}

.auth-input-wrap input:focus {
    border-color: hsla(var(--lilac-primary) / 0.42);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 0 0 5px hsla(var(--lilac-primary) / 0.07), 0 16px 32px hsla(var(--lilac-primary) / 0.06);
}

.auth-input-wrap:focus-within,
.auth-input-wrap.has-value {
    transform: translateY(-2px);
    filter: drop-shadow(0 12px 18px rgba(15, 23, 42, 0.05));
}

.auth-input-wrap:focus-within::after,
.auth-input-wrap.has-value::after {
    transform: scaleX(1);
    opacity: 1;
}

.auth-input-wrap.has-value .auth-input-icon,
.auth-input-wrap:focus-within .auth-input-icon {
    color: hsl(var(--lilac-dark));
}

.auth-input-icon {
    position: absolute;
    left: 1.05rem;
    top: 50%;
    width: 1.1rem;
    height: 1.1rem;
    color: #94a3b8;
    transform: translateY(-50%);
    pointer-events: none;
}

.auth-password-toggle {
    position: absolute;
    top: 50%;
    right: 0.95rem;
    width: 2.35rem;
    height: 2.35rem;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: #94a3b8;
    transform: translateY(-50%);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.auth-password-toggle svg {
    width: 1.15rem;
    height: 1.15rem;
}

.auth-password-toggle .icon-hide {
    display: none;
}

.auth-password-toggle.is-visible .icon-show {
    display: none;
}

.auth-password-toggle.is-visible .icon-hide {
    display: inline;
}

.auth-password-toggle:hover {
    color: hsl(var(--lilac-dark));
    background: hsla(var(--lilac-primary) / 0.08);
}

.auth-link-btn,
.auth-inline-back {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    border: none;
    background: transparent;
    padding: 0;
    color: hsl(var(--muted-grey));
    font-weight: 800;
    font-size: 0.79rem;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.2s ease;
}

.auth-link-btn:hover,
.auth-inline-back:hover {
    color: hsl(var(--lilac-dark));
    transform: translateY(-1px);
}

.auth-inline-back {
    margin-top: 1.25rem;
}

.auth-inline-back svg {
    width: 0.95rem;
    height: 0.95rem;
}

.auth-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    cursor: pointer;
    color: hsl(var(--muted-grey));
    font-size: 0.92rem;
    font-weight: 700;
    padding: 0.4rem 0.1rem;
    border-radius: 12px;
    transition: background 0.2s ease;
}

.auth-checkbox:hover {
    background: rgba(248, 250, 252, 0.9);
}

.auth-checkbox input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.auth-checkbox-ui {
    width: 1.1rem;
    height: 1.1rem;
    border-radius: 0.35rem;
    border: 1px solid hsla(var(--ink-dark) / 0.18);
    background: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.auth-checkbox-ui::after {
    content: '';
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 0.18rem;
    background: transparent;
    transition: var(--transition-smooth);
}

.auth-checkbox input:checked + .auth-checkbox-ui {
    border-color: hsl(var(--lilac-primary));
    background: hsla(var(--lilac-primary) / 0.12);
}

.auth-checkbox input:checked + .auth-checkbox-ui::after {
    background: hsl(var(--lilac-dark));
}

.auth-submit-btn {
    position: relative;
    width: 100%;
    min-height: 60px;
    border-radius: 18px;
    font-size: 1rem;
    justify-content: center;
    background: linear-gradient(135deg, hsl(var(--lilac-primary)), hsl(var(--lilac-dark)));
    color: #fff;
    box-shadow: 0 16px 30px hsla(var(--lilac-primary) / 0.24);
    transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.28s ease, filter 0.28s ease;
}

.auth-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px hsla(var(--lilac-primary) / 0.3);
    filter: saturate(1.04);
}

.auth-submit-btn:active {
    transform: translateY(0);
    box-shadow: 0 10px 22px hsla(var(--lilac-primary) / 0.22);
}

.auth-submit-loader {
    display: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    animation: auth-spin 0.7s linear infinite;
}

.auth-form.is-loading .auth-submit-label {
    opacity: 0.84;
}

.auth-form.is-loading .auth-submit-loader {
    display: inline-block;
}

.auth-status {
    min-height: 0;
    font-size: 0.88rem;
    font-weight: 700;
    border-radius: 14px;
    opacity: 0;
    transform: translateY(-4px);
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, max-height 0.2s ease, padding 0.2s ease, margin-top 0.2s ease;
}

.auth-status.has-message {
    opacity: 1;
    transform: translateY(0);
    max-height: 80px;
    padding: 0.85rem 1rem;
    margin-top: 0.85rem;
}

.auth-status.is-success,
.auth-status.is-info,
.auth-status.is-error {
    border: 1px solid transparent;
}

.auth-status.is-success {
    color: hsl(var(--leaf-dark));
    background: hsla(var(--leaf-primary) / 0.08);
    border-color: hsla(var(--leaf-primary) / 0.12);
}

.auth-status.is-info {
    color: hsl(var(--muted-grey));
    background: hsla(var(--ink-dark) / 0.04);
    border-color: hsla(var(--ink-dark) / 0.06);
}

.auth-status.is-error {
    color: #b91c1c;
    background: rgba(248, 113, 113, 0.08);
    border-color: rgba(248, 113, 113, 0.16);
}

.auth-secondary-row {
    margin-top: 1.45rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    padding-top: 1.1rem;
    border-top: 1px solid hsla(var(--ink-dark) / 0.07);
    color: hsl(var(--muted-grey));
    font-size: 0.88rem;
    font-weight: 700;
}

.auth-secondary-label {
    color: hsl(var(--muted-grey));
}

.auth-secondary-link {
    border: none;
    background: transparent;
    color: hsl(var(--lilac-dark));
    text-decoration: none;
    font-weight: 800;
    font-size: inherit;
    cursor: pointer;
    padding: 0;
}

.auth-secondary-link:hover {
    color: hsl(var(--ink-dark));
}

.reveal-auth {
    animation: auth-fade-up 0.55s ease both;
}

@keyframes auth-fade-up {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes auth-spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes auth-card-settle {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.985);
        filter: blur(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@media (max-width: 767px) {
    .auth-stage {
        min-height: calc(100vh - 76px);
        padding: 1rem 0 1.6rem;
        align-items: flex-start;
    }

    .auth-topbar-inner {
        min-height: 76px;
        flex-wrap: wrap;
        padding-top: 0.9rem;
        padding-bottom: 0.9rem;
    }

    .auth-topbar-actions {
        width: 100%;
        justify-content: space-between;
    }

    .auth-card-shell {
        border-radius: 26px;
        padding: 1.25rem 1.2rem 1.1rem;
    }

    .auth-copy p {
        max-width: none;
    }

    .auth-copy h1 {
        font-size: 2.2rem;
    }

    .auth-form {
        margin-top: 1.35rem;
    }

    .auth-input-wrap input,
    .auth-submit-btn {
        min-height: 56px;
    }

    .auth-secondary-row {
        flex-direction: column;
        gap: 0.35rem;
    }
}