:root {
    --rika-gate-text: #f7f7f4;
    --rika-gate-text-muted: rgba(247, 247, 244, 0.88);
    --rika-gate-line: rgba(255, 255, 255, 0.82);
    --rika-gate-bg-dark: #040404;
    --rika-gate-bg-mid: #4a4a4a;
    --rika-gate-input-bg: #f4f4f4;
    --rika-gate-input-text: #101010;
}

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

body.rika-gate-body {
    margin: 0 !important;
    color: var(--rika-gate-text) !important;
    background: linear-gradient(115deg, var(--rika-gate-bg-dark) 6%, #111111 28%, #333333 63%, var(--rika-gate-bg-mid) 100%) !important;
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Yu Gothic", YuGothic, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

body.rika-gate-body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: transparent;
    pointer-events: none;
}

.rika-gate {
    min-height: 100vh;
    min-height: 100svh;
    min-height: 100dvh;
    display: grid;
    place-items: center;
    align-items: center;
    justify-items: center;
    padding: clamp(24px, 4.2vh, 42px) clamp(22px, 4.4vw, 34px);
    box-sizing: border-box;
}

.rika-gate__panel {
    width: min(100%, 430px);
    display: flex;
    flex-direction: column;
    align-items: center;
    box-sizing: border-box;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    outline: none !important;
}

.rika-gate__hero {
    width: 100%;
}

.rika-gate__title {
    max-width: 100%;
    margin: 0;
    color: var(--rika-gate-text) !important;
    font-family: "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN", serif;
    font-size: clamp(32px, 4vw, 48px);
    line-height: 1.15;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-align: center;
    white-space: nowrap;
    overflow: visible;
}

.rika-gate__description {
    width: min(100%, 27rem);
    margin: clamp(34px, 5vh, 48px) auto 0;
    color: var(--rika-gate-text-muted) !important;
    font-size: clamp(15px, 1.35vw, 18px);
    line-height: 1.85;
    letter-spacing: 0.08em;
}

.rika-gate__description p {
    margin: 0;
}

.rika-gate__description p + p {
    margin-top: 1.4em;
}

.rika-gate__social {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(18px, 2vw, 26px);
    margin: clamp(34px, 5vh, 48px) 0 0;
}

.rika-gate__social-link {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    width: clamp(56px, 5vw, 74px);
    height: clamp(56px, 5vw, 74px);
    background: rgba(255, 255, 255, 0.96) !important;
    color: #0f0f0f !important;
    text-decoration: none !important;
    border: none !important;
    border-radius: 10px;
    transition: transform 0.2s ease, opacity 0.2s ease;
    box-shadow: none !important;
    padding: 0 !important;
}

.rika-gate__social-link:hover,
.rika-gate__social-link:focus-visible {
    transform: translateY(-1px);
    opacity: 0.92;
}

.rika-gate__social-placeholder {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: clamp(15px, 1.45vw, 18px);
    font-weight: 700;
    letter-spacing: 0.05em;
    color: #111111 !important;
}

.rika-gate__social-icon {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.rika-gate__form {
    width: min(100%, 380px);
    display: grid;
    gap: 16px;
    margin-top: clamp(34px, 5vh, 48px);
}

.rika-gate__input {
    width: 100%;
    min-height: 60px;
    padding: 10px 14px;
    box-sizing: border-box;
    background: var(--rika-gate-input-bg) !important;
    border: 1px solid rgba(255, 255, 255, 0.82) !important;
    border-radius: 0 !important;
    color: var(--rika-gate-input-text) !important;
    font-size: 17px;
    box-shadow: none !important;
    outline: none;
}

.rika-gate__input:focus {
    border-color: #ffffff !important;
    background: #ffffff !important;
}

.rika-gate__input::placeholder {
    color: #9a9a9a;
    opacity: 1;
}

.rika-gate__input:focus::placeholder {
    color: transparent;
    opacity: 0;
}

.rika-gate__button {
    min-height: 60px;
    padding: 10px 16px;
    background: rgba(0, 0, 0, 0.86) !important;
    border: 1px solid var(--rika-gate-line) !important;
    border-radius: 0 !important;
    color: #ffffff !important;
    font-size: clamp(16px, 1.4vw, 20px);
    line-height: 1.2;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    cursor: pointer;
    box-shadow: none !important;
}

.rika-gate__button:hover,
.rika-gate__button:focus-visible {
    background: rgba(255, 255, 255, 0.08) !important;
}

.rika-gate__error {
    width: min(100%, 380px);
    margin: 18px 0 0;
    padding: 10px 14px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: var(--rika-gate-text);
    background: rgba(0, 0, 0, 0.18);
    font-size: 13px;
    line-height: 1.7;
    text-align: center;
    box-sizing: border-box;
}

@media (max-width: 767px) {
    .rika-gate {
        padding: clamp(16px, 4.6vw, 28px) clamp(20px, 5.2vw, 26px);
    }

    .rika-gate__title {
        font-size: clamp(28px, 8.8vw, 42px);
        letter-spacing: 0.10em;
    }

    .rika-gate__description {
        width: 100%;
        margin-top: clamp(20px, 3.6vh, 28px);
        font-size: clamp(15px, 3.6vw, 17px);
        line-height: 1.72;
        letter-spacing: 0.06em;
    }

    .rika-gate__social {
        gap: clamp(14px, 3.8vw, 18px);
        margin-top: clamp(20px, 3.6vh, 28px);
    }

    .rika-gate__social-link {
        width: clamp(50px, 15.5vw, 64px);
        height: clamp(50px, 15.5vw, 64px);
        border-radius: 8px;
    }

    .rika-gate__social-placeholder {
        font-size: clamp(14px, 4vw, 16px);
    }

    .rika-gate__form {
        width: 100%;
        margin-top: clamp(20px, 3.6vh, 28px);
        gap: 12px;
    }

    .rika-gate__input,
    .rika-gate__button {
        min-height: clamp(48px, 12.5vw, 56px);
    }

    .rika-gate__button {
        font-size: clamp(14px, 4vw, 18px);
        letter-spacing: 0.18em;
    }

    .rika-gate__error {
        width: 100%;
        margin-top: 14px;
        font-size: 12px;
    }
}

@media (max-height: 760px) and (max-width: 767px) {
    .rika-gate {
        place-items: center;
        align-items: center;
        justify-items: center;
    }

    .rika-gate__description {
        line-height: 1.65;
    }
}

@media (min-width: 768px) and (max-width: 1180px) and (orientation: portrait) {
    .rika-gate {
        min-height: 100svh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 48px 40px;
        box-sizing: border-box;
    }

    .rika-gate__panel {
        width: min(100%, 520px);
    }

    .rika-gate__title {
        font-size: clamp(44px, 6vw, 62px);
        line-height: 1.18;
    }

    .rika-gate__description {
        width: min(100%, 34rem);
        margin-top: 46px;
        font-size: clamp(17px, 2vw, 20px);
        line-height: 1.95;
        letter-spacing: 0.08em;
    }

    .rika-gate__social {
        margin-top: 48px;
        gap: 28px;
    }

    .rika-gate__social-link {
        width: 76px;
        height: 76px;
    }

    .rika-gate__form {
        width: min(100%, 420px);
        margin-top: 48px;
        gap: 18px;
    }

    .rika-gate__input,
    .rika-gate__button {
        min-height: 62px;
    }
}