/* ══════════════════════════════════════════
   고객 로그인 — Dark & Warm Design
   ══════════════════════════════════════════ */

:root {
    --bg: #1a1a1a;
    --card: #242424;
    --text: #e8e4df;
    --text-light: #9a9590;
    --accent: #d4a373;
    --accent-light: #3d3228;
    --accent-hover: #e0b68a;
    --border: #333;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 12px 48px rgba(0,0,0,0.4);
    --danger: #e07474;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1.5rem;
    -webkit-font-smoothing: antialiased;
}

/* —— 배경 장식 —— */
body::before {
    content: '';
    position: fixed;
    top: -30%; right: -15%;
    width: 600px; height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212,163,115,0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}
body::after {
    content: '';
    position: fixed;
    bottom: -25%; left: -10%;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212,163,115,0.04) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* —— 인증 박스 —— */
.auth-box {
    background: var(--card);
    border-radius: 20px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 420px;
    text-align: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
    border: 1px solid var(--border);
}

/* —— 로고 영역 —— */
.logo-area {
    background: #000000;
    padding: 2em 1.5em;
    margin: 0;
}
.login-logo {
    display: block;
    margin: 0 auto;
    width: 400px;
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

/* —— 폼 영역 —— */
.auth-box form {
    padding: 2em 2.5em 0;
}

/* —— 폼 그룹 —— */
.form-group {
    text-align: left;
    margin-bottom: 1.3em;
}
.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5em;
    color: var(--accent);
    font-size: 0.85em;
    letter-spacing: 0.02em;
}
.form-group input {
    width: 100%;
    padding: 0.9em 1.1em;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1em;
    font-family: inherit;
    transition: all 0.25s ease;
    background: #1a1a1a;
    color: var(--text);
}
.form-group input::placeholder {
    color: #555;
}
.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(212,163,115,0.15);
    background: #1e1e1e;
}

/* —— 로그인 버튼 —— */
.btn-submit {
    width: 100%;
    padding: 1em;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 24px;
    font-size: 1.05em;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    margin-top: 1.4em;
    transition: all 0.3s ease;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 20px rgba(212,163,115,0.25);
}
.btn-submit:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(212,163,115,0.35);
}
.btn-submit:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(212,163,115,0.2);
}

/* —— 회원가입 링크 —— */
.link-text {
    display: block;
    padding: 1.8em 2.5em;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.88em;
    font-weight: 500;
    transition: color 0.25s ease;
}
.link-text:hover {
    color: var(--accent);
}

/* —— 에러 플래시 —— */
.flash {
    color: var(--danger);
    font-size: 0.88em;
    margin: 0 2.5em;
    padding: 0.8em 1em;
    font-weight: 600;
    background: rgba(224,116,116,0.1);
    border-radius: var(--radius-sm);
    border: 1.5px solid rgba(224,116,116,0.2);
}

/* ══════════════════════════════════════════
   반응형
   ══════════════════════════════════════════ */

/* 태블릿 */
@media (max-width: 768px) {
    body { padding: 1.2rem; }
    .auth-box {
        max-width: 400px;
        border-radius: 18px;
    }
    .login-logo { width: 100%; }
    .logo-area { padding: 1.6em 1.2em; }
    .auth-box form { padding: 1.8em 2em 0; }
    .link-text { padding: 1.6em 2em; }
}

/* 스마트폰 */
@media (max-width: 480px) {
    body {
        padding: 0;
        align-items: flex-start;
    }
    body::before, body::after {
        display: none;
    }
    .auth-box {
        max-width: 100%;
        border-radius: 0;
        border: none;
        min-height: 100vh;
        box-shadow: none;
    }
    .logo-area { padding: 1em 0; }
    .login-logo { width: 100%; }
    .auth-box form {
        padding: 2em 1.5em 0;
    }
    .form-group {
        margin-bottom: 1.1em;
    }
    .form-group label {
        font-size: 0.82em;
        margin-bottom: 0.4em;
    }
    .form-group input {
        padding: 0.85em 1em;
        font-size: 0.95em;
        border-radius: 8px;
    }
    .btn-submit {
        padding: 0.95em;
        font-size: 1em;
        margin-top: 1em;
        border-radius: 20px;
    }
    .link-text {
        padding: 1.5em 1.5em;
        font-size: 0.84em;
    }
    .flash {
        margin: 0 1.5em;
        font-size: 0.84em;
        padding: 0.7em 0.9em;
    }
}

/* 아주 작은 화면 */
@media (max-width: 360px) {
    .logo-area { padding: 0.8em 0; }
    .login-logo { width: 100%; }
    .auth-box form {
        padding: 1.6em 1.2em 0;
    }
    .form-group input {
        padding: 0.75em 0.9em;
        font-size: 0.92em;
    }
    .btn-submit {
        padding: 0.85em;
        font-size: 0.95em;
        border-radius: 18px;
    }
    .link-text {
        padding: 1.3em 1.2em;
        font-size: 0.8em;
    }
}

/* 가로 모드 짧은 높이 보정 */
@media (max-height: 600px) {
    body {
        align-items: flex-start;
        padding-top: 0;
    }
    .auth-box {
        border-radius: 0;
        min-height: 100vh;
    }
    .logo-area { padding: 1.2em 1em; }
    .login-logo { width: 200px; }
    .auth-box form { padding: 1.2em 1.5em 0; }
    .form-group { margin-bottom: 1em; }
    .btn-submit { margin-top: 0.8em; }
    .link-text { padding: 1.2em 1.5em; }
}