/* login.css - 登録页面样式 */

/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
}

body {
    font-family: 'Noto Sans SC', 'Microsoft YaHei', 'Segoe UI', Arial, sans-serif;
    min-height: 100%;
    min-height: 100vh;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
    background: -webkit-linear-gradient(315deg, #ff6b35 0%, #ff5000 50%, #ff9f43 100%);
    background: linear-gradient(135deg, #ff6b35 0%, #ff5000 50%, #ff9f43 100%);
    background-size: 400% 400%;
    -webkit-animation: gradientBG 15s ease infinite;
    animation: gradientBG 15s ease infinite;
    position: relative;
    overflow-x: hidden;
    /* スマホでスクロール可能に */
    overflow-y: auto;
    padding: 20px 16px 80px 16px;
}

/* 背景アニメーション */
@-webkit-keyframes gradientBG {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
@keyframes gradientBG {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 背景装飾サークル */
body::before {
    content: '';
    position: fixed;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    top: -250px;
    left: -250px;
    -webkit-animation: float 6s ease-in-out infinite;
    animation: float 6s ease-in-out infinite;
    pointer-events: none;
}

body::after {
    content: '';
    position: fixed;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    bottom: -200px;
    right: -200px;
    -webkit-animation: float 8s ease-in-out infinite reverse;
    animation: float 8s ease-in-out infinite reverse;
    pointer-events: none;
}

@-webkit-keyframes float {
    0%,  100% { -webkit-transform: translateY(0) rotate(0deg); transform: translateY(0) rotate(0deg); }
    50%        { -webkit-transform: translateY(-20px) rotate(5deg); transform: translateY(-20px) rotate(5deg); }
}
@keyframes float {
    0%,  100% { -webkit-transform: translateY(0) rotate(0deg); transform: translateY(0) rotate(0deg); }
    50%        { -webkit-transform: translateY(-20px) rotate(5deg); transform: translateY(-20px) rotate(5deg); }
}

/* Logoコンテナ */
.login-logo {
    text-align: center;
    margin-bottom: 20px;
    padding: 10px 0;
    -webkit-animation: fadeInDown 0.6s ease-out;
    animation: fadeInDown 0.6s ease-out;
}

@-webkit-keyframes fadeInDown {
    from { opacity: 0; -webkit-transform: translateY(-20px); transform: translateY(-20px); }
    to   { opacity: 1; -webkit-transform: translateY(0); transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; -webkit-transform: translateY(-20px); transform: translateY(-20px); }
    to   { opacity: 1; -webkit-transform: translateY(0); transform: translateY(0); }
}

/* Logo画像 */
.login-logo .logo-image {
    max-width: 240px;
    max-height: 100px;
    width: auto;
    height: auto;
    display: inline-block;
    -webkit-transition: -webkit-transform 0.3s ease;
    transition: transform 0.3s ease;
}

.login-logo .logo-image:hover {
    -webkit-transform: scale(1.02);
    transform: scale(1.02);
}

/* ログインコンテナ */
.login-container {
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 450px;
    /* 左右に必ず余白を確保 */
    margin-left: auto;
    margin-right: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
    -webkit-animation: fadeInUp 0.6s ease-out;
    animation: fadeInUp 0.6s ease-out;
}

@-webkit-keyframes fadeInUp {
    from { opacity: 0; -webkit-transform: translateY(30px); transform: translateY(30px); }
    to   { opacity: 1; -webkit-transform: translateY(0); transform: translateY(0); }
}
@keyframes fadeInUp {
    from { opacity: 0; -webkit-transform: translateY(30px); transform: translateY(30px); }
    to   { opacity: 1; -webkit-transform: translateY(0); transform: translateY(0); }
}

/* タイトル */
.login-container h1 {
    text-align: center;
    color: #ff6b35;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

/* 情報メッセージ */
.login-container .info {
    color: #6b7280;
    background: #f3f4f6;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 25px;
    text-align: center;
    font-size: 14px;
    line-height: 1.6;
    border-left: 4px solid #ff6b35;
    word-break: break-word;
}

/* エラーメッセージ */
.login-container .error {
    color: #dc2626;
    background: #fee2e2;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 25px;
    text-align: center;
    font-size: 14px;
    border-left: 4px solid #dc2626;
    -webkit-animation: shake 0.5s ease-in-out;
    animation: shake 0.5s ease-in-out;
    word-break: break-word;
}

@-webkit-keyframes shake {
    0%,  100% { -webkit-transform: translateX(0); transform: translateX(0); }
    25%        { -webkit-transform: translateX(-10px); transform: translateX(-10px); }
    75%        { -webkit-transform: translateX(10px); transform: translateX(10px); }
}
@keyframes shake {
    0%,  100% { -webkit-transform: translateX(0); transform: translateX(0); }
    25%        { -webkit-transform: translateX(-10px); transform: translateX(-10px); }
    75%        { -webkit-transform: translateX(10px); transform: translateX(10px); }
}

/* 成功メッセージ */
.login-container .success {
    color: #059669;
    background: #d1fae5;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 25px;
    text-align: center;
    font-size: 14px;
    border-left: 4px solid #059669;
    -webkit-animation: fadeIn 0.5s ease-in-out;
    animation: fadeIn 0.5s ease-in-out;
}

@-webkit-keyframes fadeIn {
    from { opacity: 0; -webkit-transform: translateY(-10px); transform: translateY(-10px); }
    to   { opacity: 1; -webkit-transform: translateY(0); transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; -webkit-transform: translateY(-10px); transform: translateY(-10px); }
    to   { opacity: 1; -webkit-transform: translateY(0); transform: translateY(0); }
}

/* フォーム */
.login-container form {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 20px;
}

.login-container form label {
    color: #374151;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 8px;
    display: block;
}

.login-container form input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 15px;
    /* iOSのズームを防ぐため最小16px */
    font-size: 16px;
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
    background: #ffffff;
    /* iOSのデフォルトスタイルをリセット */
    -webkit-appearance: none;
    appearance: none;
}

.login-container form input:focus {
    outline: none;
    border-color: #ff6b35;
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.login-container form input::-webkit-input-placeholder { color: #9ca3af; }
.login-container form input:-ms-input-placeholder      { color: #9ca3af; }
.login-container form input::placeholder               { color: #9ca3af; }

/* ログインボタン */
.login-container form button[type="submit"] {
    width: 100%;
    padding: 14px;
    background: -webkit-linear-gradient(left, #ff6b35 0%, #ff5000 100%);
    background: linear-gradient(135deg, #ff6b35 0%, #ff5000 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
    margin-top: 10px;
    /* iOSのデフォルトスタイルをリセット */
    -webkit-appearance: none;
    appearance: none;
    /* タップ時のハイライトを制御 */
    -webkit-tap-highlight-color: transparent;
}

.login-container form button[type="submit"]:hover {
    -webkit-transform: translateY(-2px);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.6);
}

.login-container form button[type="submit"]:active {
    -webkit-transform: translateY(0);
    transform: translateY(0);
}

/* パスワード忘れリンク */
.login-container p a {
    display: block;
    text-align: center;
    color: #ff6b35;
    text-decoration: none;
    font-size: 14px;
    margin-top: 20px;
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
    padding: 8px 0;
}

.login-container p a:hover {
    color: #ff5000;
    text-decoration: underline;
}

/* 言語切り替えボタン */
.lang-switcher {
    position: fixed;
    bottom: 30px;
    right: 16px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    gap: 10px;
    z-index: 1000;
}

.lang-btn {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.9);
    color: #ff6b35;
    border: 2px solid #ff6b35;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    -webkit-tap-highlight-color: transparent;
    -webkit-appearance: none;
    appearance: none;
}

.lang-btn:hover {
    background: #ff6b35;
    color: white;
    -webkit-transform: scale(1.05);
    transform: scale(1.05);
}

.lang-btn.active {
    background: #ff6b35;
    color: white;
}

/* フッター */
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: 15px;
    text-align: center;
    font-size: 12px;
    color: #6b7280;
    z-index: 1000;
}

/* ========================================
   レスポンシブ：スマホ対応
   ======================================== */

/* 幅480px以下（一般的なスマホ） */
@media (max-width: 480px) {
    body {
        padding: 16px 12px 80px 12px;
        /* flexのalign-itemsをflexstartにして上から詰める */
        -webkit-box-align: flex-start;
        -webkit-align-items: flex-start;
        -ms-flex-align: flex-start;
        align-items: flex-start;
    }

    .login-container {
        padding: 24px 16px;
        border-radius: 16px;
        /* 左右の余白を確保しつつ幅100%を使う */
        width: 100%;
        max-width: 100%;
        margin-left: 0;
        margin-right: 0;
    }

    .login-container h1 {
        font-size: 24px;
    }

    .login-logo .logo-image {
        max-width: 180px;
        max-height: 72px;
    }

    .login-container .info {
        font-size: 12px;
        padding: 12px;
    }

    .login-container form input {
        padding: 11px 14px;
    }

    .login-container form button[type="submit"] {
        padding: 13px;
        font-size: 16px;
    }

    .lang-switcher {
        bottom: 20px;
        right: 12px;
        gap: 8px;
    }

    .lang-btn {
        padding: 8px 14px;
        font-size: 12px;
    }
}

/* 幅360px以下（小型スマホ） */
@media (max-width: 360px) {
    body {
        padding: 12px 8px 80px 8px;
    }

    .login-container {
        padding: 20px 14px;
    }

    .login-container h1 {
        font-size: 22px;
    }

    .login-logo .logo-image {
        max-width: 160px;
        max-height: 64px;
    }
}

/* 横向きスマホ */
@media (max-height: 500px) and (orientation: landscape) {
    body {
        padding: 12px 16px 70px 16px;
        -webkit-box-align: flex-start;
        -webkit-align-items: flex-start;
        -ms-flex-align: flex-start;
        align-items: flex-start;
    }

    .login-container {
        padding: 20px 24px;
    }

    .login-logo {
        margin-bottom: 12px;
    }

    .login-logo .logo-image {
        max-height: 60px;
    }

    .login-container h1 {
        font-size: 22px;
        margin-bottom: 6px;
    }

    .login-container .info {
        padding: 10px;
        margin-bottom: 14px;
        font-size: 12px;
    }

    .login-container form {
        gap: 12px;
    }
}