/* Login Page — 方案 C (상단 컬러 헤더) · 계층별 브랜딩(대본사/부본사/총판) */
:root {
    --bg-color: #F9FAFB;
    --text-main: #1F2937;
    --text-sub: #6B7280;
    --input-border: #E5E7EB;
}

/* 계층 색: head=대본사(파랑) / sub=부본사(틸) / dist=총판(바이올렛) */
body.tier-head { --tier: #4F79D6; --tier-strong: #3A66C8; --tier-ring: rgba(79, 121, 214, .18); }
body.tier-sub  { --tier: #0F9E8C; --tier-strong: #0F6E56; --tier-ring: rgba(15, 158, 140, .18); }
body.tier-dist { --tier: #7A5BE0; --tier-strong: #534AB7; --tier-ring: rgba(122, 91, 224, .18); }
body:not([class*="tier-"]) { --tier: #4F79D6; --tier-strong: #3A66C8; --tier-ring: rgba(79, 121, 214, .18); }

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

body {
    font-family: 'Noto Sans KR', sans-serif;
    background: var(--bg-color);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-x: hidden;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, .10), 0 10px 10px -5px rgba(0, 0, 0, .04);
    animation: cardSlideUp .6s cubic-bezier(.2, .8, .2, 1) forwards;
    transform: translateY(20px);
    opacity: 0;
}

@keyframes cardSlideUp {
    to { opacity: 1; transform: translateY(0); }
}

/* ── 상단 계층 컬러 헤더 ── */
.login-card-head {
    background: var(--tier);
    color: #fff;
    text-align: center;
    padding: 2.25rem 2rem 1.9rem;
}

.login-logo {
    width: 60px;
    height: 60px;
    margin: 0 auto .9rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, .16);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-logo svg { width: 30px; height: 30px; }

.login-tier-name {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -.01em;
}

.login-tier-sub {
    margin-top: .3rem;
    font-size: .85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, .82);
}

/* ── 폼 본문 ── */
.login-card-body { padding: 2rem; }

.login-form { display: flex; flex-direction: column; gap: 1rem; }

.login-field { display: flex; flex-direction: column; gap: .5rem; }

.login-label {
    font-size: .875rem;
    font-weight: 600;
    color: var(--text-main);
    padding-left: .25rem;
}

.input-group { position: relative; }

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #9CA3AF;
    display: flex;
    pointer-events: none;
    transition: color .2s ease;
}

.input-icon svg { width: 20px; height: 20px; }

.login-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 1px solid var(--input-border);
    background: #fff;
    border-radius: 12px;
    font-size: 1rem; /* 16px — iOS 확대 방지 */
    color: var(--text-main);
    font-weight: 500;
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.login-input::placeholder { color: #9CA3AF; font-weight: 400; }

.login-input:focus {
    border-color: var(--tier);
    box-shadow: 0 0 0 3px var(--tier-ring);
}

.login-input:focus + .input-icon { color: var(--tier); }

/* ── 버튼 ── */
.login-btn {
    margin-top: 1rem;
    width: 100%;
    padding: 1rem;
    background: var(--tier);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
    position: relative;
    overflow: hidden;
}

.login-btn:hover { background: var(--tier-strong); transform: translateY(-1px); }
.login-btn:active { transform: translateY(0); }

.login-footer {
    margin-top: 1.75rem;
    text-align: center;
    color: var(--text-sub);
    font-size: .8rem;
}

/* Loading spinner */
.login-btn.loading { color: transparent; pointer-events: none; }
.login-btn.loading::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 20px;
    height: 20px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin .8s linear infinite;
    transform: translate(-50%, -50%);
}

@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

/* ── 모바일 ── */
@media (max-width: 480px) {
    body { padding: 16px; align-items: flex-start; }
    .login-container { margin-top: 3rem; }
    .login-card { border-radius: 18px; }
    .login-card-head { padding: 2rem 1.5rem 1.75rem; }
    .login-card-body { padding: 1.75rem 1.5rem; }
    .login-tier-name { font-size: 1.5rem; }
}

/* ── 修改密码弹窗 ── */
.cp-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1000;
    backdrop-filter: blur(4px);
    animation: fadeIn .25s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.cp-modal {
    background: #fff;
    border-radius: 20px;
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, .25);
    animation: modalSlideUp .35s cubic-bezier(.2, .8, .2, 1);
}

@keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(20px) scale(.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.cp-modal-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1.25rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(79, 121, 214, .12);
    color: var(--tier);
}

.cp-modal-icon svg { width: 28px; height: 28px; }

.cp-modal-title {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: .5rem;
}

.cp-modal-msg {
    text-align: center;
    font-size: .9rem;
    color: var(--text-sub);
    margin-bottom: 1.5rem;
}

.cp-modal-form { display: flex; flex-direction: column; gap: 1rem; }

.cp-modal-field { display: flex; flex-direction: column; gap: .4rem; }

.cp-modal-label {
    font-size: .875rem;
    font-weight: 600;
    color: var(--text-main);
    padding-left: .25rem;
}

.cp-modal-input {
    width: 100%;
    padding: .875rem 1rem;
    border: 1px solid var(--input-border);
    background: #fff;
    border-radius: 12px;
    font-size: 1rem;
    color: var(--text-main);
    font-weight: 500;
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.cp-modal-input::placeholder { color: #9CA3AF; font-weight: 400; }

.cp-modal-input:focus {
    border-color: var(--tier);
    box-shadow: 0 0 0 3px var(--tier-ring);
}

.cp-modal-btn {
    margin-top: .5rem;
    width: 100%;
    padding: 1rem;
    background: var(--tier);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .2s ease, transform .2s ease;
}

.cp-modal-btn:hover { background: var(--tier-strong); transform: translateY(-1px); }
.cp-modal-btn:active { transform: translateY(0); }