* {
    box-sizing: border-box;
}

:root {
    --auth-ink: #0f172a;
    --auth-muted: #5b6475;
    --auth-panel: rgba(255, 255, 255, 0.82);
    --auth-border: rgba(15, 23, 42, 0.10);
    --auth-accent: #059669;
    --auth-accent-strong: #047857;
    --auth-warning: #dc2626;
    --auth-success: #047857;
}

body.auth-page {
    margin: 0;
    min-height: 100dvh;
    padding: clamp(1rem, 2.5vw, 2rem);
    font-family: "Segoe UI Variable", "Segoe UI", "Noto Sans Thai", sans-serif;
    color: var(--auth-ink);
    background:
        radial-gradient(circle at top left, rgba(16, 185, 129, 0.24), transparent 32%),
        radial-gradient(circle at bottom right, rgba(245, 158, 11, 0.18), transparent 28%),
        linear-gradient(135deg, #f8fafc 0%, #eefdf6 55%, #fff7ed 100%);
    overflow-x: hidden;
}

.auth-orb {
    position: fixed;
    inset: auto;
    border-radius: 999px;
    filter: blur(40px);
    opacity: 0.8;
    pointer-events: none;
}

.auth-orb-left {
    width: 16rem;
    height: 16rem;
    top: -5rem;
    left: -4rem;
    background: rgba(16, 185, 129, 0.22);
}

.auth-orb-right {
    width: 18rem;
    height: 18rem;
    right: -5rem;
    bottom: -6rem;
    background: rgba(245, 158, 11, 0.16);
}

.auth-shell {
    position: relative;
    width: min(1080px, 100%);
    min-height: calc(100dvh - (clamp(1rem, 2.5vw, 2rem) * 2));
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
    align-items: center;
    gap: clamp(1.5rem, 4vw, 4rem);
    padding: clamp(0.5rem, 1.5vw, 1rem);
}

.auth-marketing,
.auth-panel {
    position: relative;
    z-index: 1;
}

.auth-marketing {
    max-width: 42rem;
    padding: clamp(1rem, 2vw, 2rem) clamp(0.5rem, 1vw, 1rem) clamp(1rem, 2vw, 2rem) 0;
}

.auth-brand {
    display: inline-flex;
    align-items: center;
    padding: 0.45rem 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid var(--auth-border);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--auth-accent-strong);
}

.auth-kicker {
    margin: 1.4rem 0 0.6rem;
    color: var(--auth-accent-strong);
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.auth-marketing h1 {
    margin: 0;
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 0.98;
    letter-spacing: -0.04em;
    max-width: 12ch;
}

.auth-summary {
    margin: 1.1rem 0 0;
    max-width: 34rem;
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--auth-muted);
}

.auth-points {
    display: grid;
    gap: 0.9rem;
    margin-top: 2rem;
}

.auth-point {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.9rem;
    align-items: start;
    padding: 1rem 1.05rem;
    border-radius: 1.2rem;
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid var(--auth-border);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.05);
    backdrop-filter: blur(10px);
}

.auth-point strong {
    display: block;
    margin-bottom: 0.3rem;
    font-size: 1rem;
}

.auth-point p {
    margin: 0;
    color: var(--auth-muted);
    line-height: 1.55;
}

.auth-point-badge {
    display: inline-grid;
    place-items: center;
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.18), rgba(5, 150, 105, 0.08));
    color: var(--auth-accent-strong);
    font-weight: 800;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.auth-panel {
    padding: clamp(1.1rem, 2vw, 1.5rem);
    width: 100%;
    max-width: 420px;
    justify-self: end;
}

.auth-panel > * {
    position: relative;
    z-index: 1;
}

.auth-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 1.6rem;
    background: var(--auth-panel);
    border: 1px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 30px 70px rgba(15, 23, 42, 0.12);
    backdrop-filter: blur(18px);
}

.auth-panel-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.auth-panel-heading {
    min-width: 0;
}

.auth-panel-label {
    margin: 0 0 0.35rem;
    color: var(--auth-accent-strong);
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.auth-panel h2 {
    margin: 0;
    font-size: clamp(1.5rem, 2.4vw, 2rem);
}

.auth-language {
    display: grid;
    gap: 0.35rem;
    justify-items: end;
    min-width: 120px;
    color: var(--auth-muted);
    font-size: 0.9rem;
    font-weight: 600;
}

.auth-language select {
    width: 100%;
    border-radius: 0.95rem;
    border: 1px solid rgba(16, 185, 129, 0.18);
    background: rgba(255, 255, 255, 0.88);
    color: var(--auth-ink);
    padding: 0.75rem 0.85rem;
    font: inherit;
    font-weight: 700;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.auth-panel-copy {
    margin: 0.95rem 0 1.35rem;
    color: var(--auth-muted);
    line-height: 1.65;
}

.auth-alert {
    padding: 0.9rem 1rem;
    border-radius: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.auth-alert-success {
    background: rgba(4, 120, 87, 0.1);
    color: var(--auth-success);
    border: 1px solid rgba(4, 120, 87, 0.18);
}

.auth-alert-error {
    background: rgba(220, 38, 38, 0.08);
    color: var(--auth-warning);
    border: 1px solid rgba(220, 38, 38, 0.18);
}

.auth-form {
    display: grid;
    gap: 1rem;
}

.auth-field {
    display: grid;
    gap: 0.45rem;
}

.auth-field label {
    color: var(--auth-ink);
    font-size: 0.95rem;
    font-weight: 700;
}

.auth-field input {
    width: 100%;
    border-radius: 1rem;
    border: 1px solid rgba(15, 23, 42, 0.12);
    background: rgba(255, 255, 255, 0.9);
    color: var(--auth-ink);
    padding: 0.95rem 1rem;
    font: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

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

.auth-field input:focus {
    outline: none;
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.12);
}

.auth-remember {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--auth-muted);
    font-weight: 600;
    user-select: none;
}

.auth-remember input {
    width: 1rem;
    height: 1rem;
    accent-color: var(--auth-accent);
}

.auth-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    border: none;
    border-radius: 1rem;
    padding: 1rem 1.2rem;
    background: linear-gradient(135deg, var(--auth-accent) 0%, var(--auth-accent-strong) 100%);
    color: #ffffff;
    font: inherit;
    font-weight: 800;
    letter-spacing: 0.02em;
    cursor: pointer;
    box-shadow: 0 16px 28px rgba(5, 150, 105, 0.22);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.auth-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 34px rgba(5, 150, 105, 0.26);
}

.auth-footer-note {
    margin: 1rem 0 0;
    color: var(--auth-muted);
    line-height: 1.6;
    font-size: 0.95rem;
}

@media (max-width: 1024px) {
    .auth-shell {
        grid-template-columns: 1fr;
        width: min(720px, 100%);
        min-height: auto;
    }

    .auth-marketing {
        max-width: 100%;
        padding-bottom: 0;
        padding-right: 0;
    }

    .auth-marketing h1 {
        max-width: none;
    }

    .auth-panel {
        max-width: none;
        justify-self: stretch;
    }
}

@media (max-width: 640px) {
    body.auth-page {
        padding: 0.75rem;
    }

    .auth-shell {
        width: 100%;
        gap: 1rem;
        align-content: center;
    }

    .auth-marketing,
    .auth-panel {
        padding: 0;
    }

    .auth-marketing {
        display: none;
    }

    .auth-panel {
        max-width: 100%;
        padding: 1rem;
        margin: 0 auto;
    }

    .auth-panel::before {
        border-radius: 1.35rem;
    }

    .auth-panel-header {
        align-items: center;
        gap: 0.75rem;
    }

    .auth-language {
        justify-items: end;
        min-width: 0;
        width: auto;
        gap: 0;
        font-size: 0.78rem;
        opacity: 0.92;
    }

    .auth-language select {
        width: 6.2rem;
        max-width: 100%;
        padding: 0.55rem 0.7rem;
        border-radius: 0.75rem;
        font-size: 0.95rem;
        font-weight: 600;
        box-shadow: none;
    }

    .auth-panel-label {
        letter-spacing: 0.1em;
    }

    .auth-panel h2 {
        font-size: clamp(1.35rem, 5.8vw, 1.7rem);
        line-height: 1.15;
    }

    .auth-field input,
    .auth-language select,
    .auth-submit {
        min-height: 48px;
    }
}