/* =============================================
   AEO Labs — index.css (로그인/회원가입)
   ============================================= */

   :root {
    --bg:      #0d0f12;
    --bg2:     #13161b;
    --bg3:     #1a1e25;
    --bg4:     #21262f;
    --border:  rgba(255,255,255,0.07);
    --border2: rgba(255,255,255,0.13);
    --text:    #e8eaed;
    --text2:   #9aa0ab;
    --text3:   #5a6070;
    --accent:  #4af0c4;
    --accent2: #2dd9ac;
    --blue:    #5b9cf6;
    --red:     #f87171;
    --green:   #4af0c4;
}

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

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

/* 배경 그리드 */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(74,240,196,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(74,240,196,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* ── 레이아웃 ── */
.wrap {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
}

/* ── 로고 ── */
.logo-area {
    text-align: center;
    margin-bottom: 32px;
}
.logo-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}
.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent), var(--blue));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'DM Mono', monospace;
    font-size: 13px;
    font-weight: 500;
    color: #0d0f12;
    flex-shrink: 0;
}
.logo-name {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
}
.logo-name span { color: var(--accent); }
.logo-sub {
    font-size: 12px;
    color: var(--text3);
    font-family: 'DM Mono', monospace;
    letter-spacing: 0.3px;
}

/* ── 카드 ── */
.card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 32px;
}

/* ── 탭 ── */
.tabs {
    display: flex;
    background: var(--bg3);
    border-radius: 8px;
    padding: 4px;
    margin-bottom: 28px;
    gap: 4px;
}
.tab-btn {
    flex: 1;
    padding: 8px;
    border: none;
    border-radius: 5px;
    background: transparent;
    color: var(--text2);
    font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}
.tab-btn.active {
    background: var(--bg4);
    color: var(--text);
}
.tab-btn:hover:not(.active) {
    color: var(--text);
}

/* ── 폼 ── */
.form-group { margin-bottom: 16px; }

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text2);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    padding: 10px 14px;
    font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
    font-size: 14px;
    transition: border-color 0.15s;
    outline: none;
}
.form-input:focus   { border-color: var(--accent); }
.form-input::placeholder { color: var(--text3); }

/* ── 버튼 ── */
.btn-submit {
    width: 100%;
    padding: 12px;
    background: var(--accent);
    border: none;
    border-radius: 8px;
    color: #0d0f12;
    font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s;
    margin-top: 8px;
    letter-spacing: 0.2px;
}
.btn-submit:hover   { background: var(--accent2); }
.btn-submit:active  { transform: scale(0.98); }

/* ── 알림 ── */
.alert {
    padding: 10px 14px;
    border-radius: 7px;
    font-size: 13px;
    margin-bottom: 16px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.5;
}
.alert-error {
    background: rgba(248,113,113,0.1);
    border: 1px solid rgba(248,113,113,0.2);
    color: var(--red);
}
.alert-success {
    background: rgba(74,240,196,0.1);
    border: 1px solid rgba(74,240,196,0.2);
    color: var(--green);
}

/* ── 하단 ── */
.card-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 12px;
    color: var(--text3);
}

/* ── 폼 전환 ── */
.form-section         { display: none; }
.form-section.active  { display: block; }

/* ── 반응형 ── */
@media (max-width: 480px) {
    .card { padding: 24px 20px; }
}