@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100..900;1,100..900&display=swap');

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

:root{
    --mobile-bg: #f4f6fb;
    --mobile-card: #ffffff;
    --mobile-primary: #3a5bdb;
    --mobile-primary-strong: #2e4bcc;
    --mobile-text: #1f2937;
    --mobile-muted: #6b7280;
    --mobile-border: #e2e8f3;
    --mobile-input-bg: #f8fafc;
}

body{
    background-color: #c9d6ff;
    background: linear-gradient(to right, #e2e2e2, #c9d6ff);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    height: 100vh;
}

.auth-feedback{
    position: fixed;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    max-width: min(92vw, 720px);
    width: max-content;
    margin: 0;
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid #d7dbe8;
    background: rgba(255,255,255,0.94);
    color: #1f2937;
    font-size: 13px;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.16);
    z-index: 40;
}

.auth-feedback:empty{
    display: none;
}

.auth-feedback.is-error{
    border-color: #dc8f8f;
    color: #8b1d1d;
}

.auth-feedback.is-success{
    border-color: #8ebc9d;
    color: #14532d;
}

.reset-modal{
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.reset-modal.is-hidden{
    display: none;
}

.reset-modal-backdrop{
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
}

.reset-modal-dialog{
    position: relative;
    width: min(94vw, 440px);
    background: #fff;
    border-radius: 16px;
    padding: 22px 20px 18px;
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.24);
}

.reset-modal-close{
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    border: 0;
    border-radius: 999px;
    background: #f3f4f6;
    color: #374151;
    cursor: pointer;
}

.reset-modal-dialog h2{
    font-size: 21px;
    line-height: 1.3;
    margin-bottom: 8px;
    color: #111827;
}

.reset-modal-description{
    font-size: 13px;
    color: #6b7280;
    margin-bottom: 14px;
}

.reset-modal-form{
    display: grid;
    gap: 10px;
}

.reset-modal-form label{
    font-size: 12px;
    color: #4b5563;
    font-weight: 600;
}

.reset-modal-form input{
    width: 100%;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    padding: 11px 12px;
    font-size: 14px;
    outline: none;
}

.reset-modal-form input:focus{
    border-color: #3a5bdb;
    box-shadow: 0 0 0 3px rgba(58, 91, 219, 0.16);
}

.reset-modal-actions{
    display: flex;
    gap: 8px;
}

.reset-modal-actions button{
    flex: 1;
    border: 0;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 700;
    padding: 11px 10px;
    cursor: pointer;
}

#password-reset-submit{
    background: #2f56db;
    color: #fff;
}

#password-reset-submit:disabled{
    background: #f3f4f6;
    color: #9ca3af;
    cursor: not-allowed;
}

.reset-modal-status{
    margin-top: 2px;
    min-height: 1.3em;
    font-size: 12px;
    color: #4b5563;
}

.reset-modal-status.is-error{
    color: #b91c1c;
}

.reset-modal-status.is-success{
    color: #14532d;
}
.container{
    background-color: #fff;
    border-radius: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.35);
    position: relative;
    overflow: hidden;
    width: 768px;
    max-width: 100%;
    min-height: 480px;
}

.container p{
    font-size: 14px;
    line-height: 20px;
    letter-spacing: 0.3px;
    margin: 20px 0 ;
}

.container span{
    font-size: 12px;;
}

.container a{
    color: #333;
    font-size: 13px;
    text-decoration: none;
    margin: 15px 0 10px;
}

.container button{
    background-color: #512da8;
    color: #fff;
    font-size: 12px;
    padding: 10px 45px;
    border: 1px solid transparent;
    border-radius: 8px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-top: 10px;
    cursor: pointer;
}

.container button.hidden{
    background-color: transparent;
    border-color: #fff;
}

.container form{
    background-color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 40px;
    height: 100%;
}

.container input{
    background-color: #eee;
    border: none;
    padding: 10px 15px;
    margin: 8px 0;
    font-size: 13px;
    border-radius: 8px;
    width: 100%;
    outline: none;
}

.auth-turnstile-wrap{
    width: 100%;
    display: flex;
    justify-content: center;
    margin: 8px 0 4px;
}

.auth-turnstile-wrap .turnstile-widget{
    width: 100%;
    max-width: 100%;
    display: flex;
    justify-content: center;
}

.helper-text,
.email-preview{
    width: 100%;
    text-align: left;
    font-size: 12px;
    color: #555;
    margin: 2px 0 6px;
}

.email-preview span{
    font-weight: 600;
    word-break: break-all;
    color: #333;
}

.form-container{
    position: absolute;
    top: 0;
    height: 100%;
    transition: all 0.6s ease-in-out;
}

.sign-in{
    left: 0;
    width: 50%;
    z-index: 2;
}

.container.active .sign-in{
    transform: translateX(100%);
}

.sign-up{
    left: 0;
    width: 50%;
    opacity: 0;
    z-index: 1;
}

.container.active .sign-up{
    transform: translateX(100%);
    opacity: 1;
    z-index: 5;
    animation: move 0.6s;
}

@keyframes move {
    0%,49.99%{
        opacity: 0;
        z-index: 1;
    }
    50%,100%{
        opacity: 1;
        z-index: 5;
    }
}

.social-icon-row{
    width: 100%;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin: 20px 0 10px;
}

.social-icon-button{
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #d4d9e4;
    background: #fff;
    padding: 0;
    margin: 0;
    cursor: pointer;
    border-radius: 999px;
    box-shadow: 0 4px 12px rgba(17, 24, 39, 0.1);
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.container .social-icon-button{
    background: #fff;
    border-color: #d4d9e4;
    font-size: 12px;
    padding: 0;
    font-weight: 400;
    line-height: 1;
    margin: 0;
    letter-spacing: 0;
    text-transform: none;
}

.social-icon-button img{
    width: 22px;
    height: 22px;
    display: block;
    object-fit: contain;
}

.social-icon-button:hover{
    transform: translateY(-1px);
    border-color: #c3cad7;
    box-shadow: 0 8px 16px rgba(17, 24, 39, 0.12);
}

.social-icon-button:focus-visible{
    outline: 3px solid #1a73e8;
    outline-offset: 2px;
}

.toggle-container{
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    overflow: hidden;
    transition: all 0.6s ease-in-out;
    border-radius: 150px 0 0 100px;
    z-index: 6;
}

.container.active .toggle-container{
    transform: translateX(-100%);
    border-radius: 0 150px 100px 0;
}

.toggle{
    background-color: #512da8;
    height: 100%;
    background: linear-gradient(to right, #5c6bc0, #512da8);
    color: #fff;
    position: relative;
    left: -100%;
    height: 100%;
    width: 200%;
    transform: translateX(0);
    transition: all 0.6s ease-in-out;
}

.container.active .toggle{
    transform: translateX(50%);
}

.toggle-panel{
    position: absolute;
    width: 50%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 30px;
    text-align: center;
    top: 0;
    transform: translateX(0);
    transition: all 0.6s ease-in-out;
}

.toggle-left{
    transform: translateX(-200%);
}

.container.active .toggle-left{
    transform: translateX(0);
}

.toggle-right{
    right: 0;
    transform: translateX(0);
}

.container.active .toggle-right{
    transform: translateX(200%);
}

/* Smartphone layout overrides for stacked flow */
@media (max-width: 768px) {
    /* PCデザインは残しつつスマホでは非表示 */
    .container{
        display: none;
    }

    body{
        height: auto;
        padding: 0;
        background: var(--mobile-bg);
        display: block;
    }

    /* スマホ専用レイアウト: 全画面使うようにベースをリセット */
    .mobile-auth{
        display: flex;
        flex-direction: column;
        min-height: 100vh;
        background: var(--mobile-bg);
        justify-content: center;
        align-items: center;
        padding: 28px 18px 40px;
        gap: 24px;
    }

    .mobile-card{
        background: var(--mobile-card);
        border-radius: 28px;
        padding: 28px 22px 32px;
        box-shadow: 0 20px 45px rgba(18, 28, 49, 0.08);
        max-width: 420px;
        width: 100%;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 16px;
        min-height: 520px;
    }

    .mobile-card-header{
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
        margin-bottom: 6px;
    }

    .mobile-icon{
        width: 52px;
        height: 52px;
        border-radius: 16px;
        background: var(--mobile-primary);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        box-shadow: 0 14px 24px rgba(58, 91, 219, 0.28);
        font-size: 22px;
    }

    .mobile-card h2{
        text-align: center;
        font-size: 20px;
        font-weight: 700;
        color: var(--mobile-text);
    }

    .mobile-card-header p{
        font-size: 13px;
        color: var(--mobile-muted);
    }

    .mobile-field{
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .mobile-field label{
        display: block;
        font-size: 13px;
        font-weight: 600;
        color: var(--mobile-text);
    }

    .mobile-input{
        display: flex;
        align-items: center;
        gap: 10px;
        background: var(--mobile-input-bg);
        border: 1px solid var(--mobile-border);
        border-radius: 14px;
        padding: 12px 14px;
        color: #7a8196;
    }

    .mobile-input i{
        font-size: 16px;
        color: #8b95ab;
    }

    .mobile-input input{
        border: none;
        background: transparent;
        width: 100%;
        flex: 1;
        font-size: 14px;
        color: var(--mobile-text);
        outline: none;
    }

    .mobile-input input::placeholder{
        color: #b5bbce;
    }

    .mobile-icon-button{
        border: none;
        background: transparent;
        color: #9aa3b7;
        font-size: 16px;
        cursor: pointer;
        padding: 0;
        flex-shrink: 0;
    }

    .mobile-links{
        text-align: right;
        margin-top: -6px;
    }

    .mobile-links a{
        color: var(--mobile-primary);
        font-weight: 600;
        font-size: 13px;
    }

    .mobile-primary{
        width: 100%;
        background: linear-gradient(90deg, var(--mobile-primary-strong), var(--mobile-primary));
        color: #fff;
        border: none;
        border-radius: 16px;
        margin-top: 10px;
        margin-bottom: 10px;
        padding: 14px 16px;
        font-size: 15px;
        font-weight: 700;
        box-shadow: 0 14px 26px rgba(46, 75, 204, 0.32);
        cursor: pointer;
        transition: transform 0.15s ease, box-shadow 0.15s ease;
    }

    .mobile-primary span{
        margin-left: 6px;
        font-size: 16px;
    }

    .mobile-primary:hover{
        transform: translateY(-1px);
        box-shadow: 0 16px 30px rgba(46, 75, 204, 0.4);
    }

    .mobile-divider{
        display: flex;
        align-items: center;
        gap: 8px;
        margin: 18px 0 4px;
        color: #9aa3b7;
        font-size: 12px;
    }

    .mobile-divider span{
        flex: 1;
        height: 1px;
        background: var(--mobile-border);
    }

    .mobile-social-icon-row{
        margin: 0;
        gap: 16px;
    }

    .mobile-social-icon-row .social-icon-button{
        width: 50px;
        height: 50px;
    }

    .mobile-check{
        display: flex;
        align-items: flex-start;
        padding: 15px 0px;
        gap: 5px;
        font-size: 11px;
        color: var(--mobile-muted);
        line-height: 1.5;
    }

    .mobile-check label{
        flex: 1;
        margin: 12px 0;
    }

    .mobile-check input{
        width: 15px;
        height: 15px;
        accent-color: var(--mobile-primary);
    }

    .mobile-check a{
        color: var(--mobile-primary);
        font-weight: 600;
        text-decoration: none;
    }

    .mobile-turnstile-wrap{
        margin: 4px 0 0;
    }

    .mobile-turnstile-wrap .turnstile-widget{
        width: 100%;
    }

    .mobile-switch{
        text-align: center;
        color: var(--mobile-muted);
        font-size: 13px;
        margin-top: 8px;
    }

    .mobile-switch a{
        color: var(--mobile-primary);
        font-weight: 700;
        text-decoration: none;
    }
}

/* PC向け: スマホ専用要素を非表示 */
@media (min-width: 769px) {
    .mobile-auth{
        display: none;
    }
}

/* 超小型スマホ (375px以下) 向け調整 */
@media (max-width: 375px) {
    .mobile-auth {
        padding: 20px 14px 30px;
    }
    .mobile-card {
        min-height: 0;
        padding: 22px 16px 24px;
        border-radius: 20px;
    }
    .mobile-input {
        padding: 10px 12px;
    }
    .mobile-primary {
        padding: 12px 14px;
        font-size: 14px;
    }
    .reset-modal-dialog {
        padding: 18px 14px 14px;
    }
}