/* ═══════════════════════════════════════
   TelRump UI — Clean Dark Theme
   ═══════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

:root {
    --bg-primary: #0c0c18;
    --bg-secondary: #13132a;
    --bg-card: #181836;
    --bg-input: #0e0e22;
    --bg-hover: #1e1e42;
    --border: #252550;
    --border-light: #303068;
    --accent: #7c5cfc;
    --accent-hover: #9478ff;
    --accent-subtle: rgba(124, 92, 252, 0.12);
    --text-primary: #f0f0ff;
    --text-secondary: #b8b8e0;
    --text-muted: #8888bb;
    --success: #34d399;
    --success-bg: rgba(52, 211, 153, 0.1);
    --danger: #f87171;
    --danger-bg: rgba(248, 113, 113, 0.1);
    --warning: #fbbf24;
    --warning-bg: rgba(251, 191, 36, 0.1);
    --info: #60a5fa;
    --info-bg: rgba(96, 165, 250, 0.1);
    --radius: 10px;
    --radius-lg: 14px;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.4);
}

body {
    font-family: 'Inter', 'Segoe UI', 'Malgun Gothic', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ─── 버튼 ─── */
.btn {
    padding: 8px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    letter-spacing: -0.01em;
}

.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.3); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #ef4444; }
.btn-success { background: var(--success); color: #0c0c18; font-weight: 700; }
.btn-success:hover { background: #4ade80; }
.btn-warning { background: var(--warning); color: #0c0c18; font-weight: 700; }
.btn-warning:hover { background: #facc15; }
.btn-sm { padding: 5px 12px; font-size: 11px; border-radius: 6px; }
.btn-lg { padding: 12px 28px; font-size: 15px; border-radius: 10px; }

/* ─── 헤더 ─── */
.header {
    background: var(--bg-secondary);
    padding: 14px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.header h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.02em;
}

.header .user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header .user-info span {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
}

/* ─── 로그인 ─── */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: radial-gradient(ellipse at 50% 30%, rgba(124,92,252,0.08) 0%, var(--bg-primary) 70%);
}

.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    width: 400px;
    box-shadow: var(--shadow-lg);
}

.login-box h2 {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.login-box .subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 28px;
    font-size: 13px;
    font-weight: 500;
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-subtle);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

/* ─── 탭 ─── */
.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 4px;
}

.tab {
    padding: 10px 24px;
    cursor: pointer;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s;
}

.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab:hover { color: var(--text-secondary); }

/* ─── 대시보드 ─── */
.dashboard {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 0;
    height: calc(100vh - 53px);
}

.sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 16px;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.main-panel {
    padding: 20px 24px;
    overflow-y: auto;
}

.main-panel::-webkit-scrollbar { width: 6px; }
.main-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* ─── 카드 ─── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 16px;
    transition: border-color 0.2s;
}

.card:hover { border-color: var(--border-light); }

.card h3 {
    color: var(--accent);
    margin-bottom: 14px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* ─── 계정 아이템 ─── */
.account-item {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.account-item:hover {
    border-color: var(--border-light);
    background: var(--bg-hover);
}

.account-item.active {
    border-color: var(--accent);
    background: var(--accent-subtle);
    box-shadow: 0 0 0 1px var(--accent);
}

.account-item .phone {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    letter-spacing: -0.01em;
}

.account-item .name {
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 2px;
}

.account-item .status {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}

.status-connected { background: var(--success-bg); color: var(--success); }
.status-disconnected { background: var(--danger-bg); color: var(--danger); }

/* ─── 그룹 아이템 ─── */
.group-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 6px;
    background: var(--bg-input);
    transition: border-color 0.2s;
}

.group-item:hover { border-color: var(--border-light); }
.group-item .title { flex: 1; }

.group-item .controls {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-shrink: 0;
}

/* ─── 토글 ─── */
.toggle {
    position: relative;
    width: 40px;
    height: 22px;
    appearance: none;
    -webkit-appearance: none;
    background: #3a3a5c;
    border-radius: 11px;
    cursor: pointer;
    outline: none;
    transition: background 0.25s;
    border: none;
    flex-shrink: 0;
}

.toggle:checked { background: var(--accent); }

.toggle::before {
    content: '';
    position: absolute;
    top: 3px; left: 3px;
    width: 16px; height: 16px;
    background: white;
    border-radius: 50%;
    transition: transform 0.25s;
    box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.toggle:checked::before { transform: translateX(18px); }

/* ─── 알림 ─── */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 12px;
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: alertIn 0.3s ease;
}

@keyframes alertIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(52,211,153,0.2); }
.alert-error { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(248,113,113,0.2); }
.alert-info { background: var(--info-bg); color: var(--info); border: 1px solid rgba(96,165,250,0.2); }

/* ─── 모달 ─── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.65);
    backdrop-filter: blur(4px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.2s ease;
}

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

.modal-overlay.show { display: flex; }

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    width: 440px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.25s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.96) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal::-webkit-scrollbar { width: 4px; }
.modal::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.modal h3 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* ─── 테이블 ─── */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

thead th {
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    background: var(--bg-input);
}

thead th:first-child { border-radius: 8px 0 0 0; }
thead th:last-child { border-radius: 0 8px 0 0; }

td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    white-space: nowrap;
    color: var(--text-primary);
}

tbody tr { transition: background 0.15s; }
tbody tr:hover { background: var(--accent-subtle); }
tbody tr:last-child td { border-bottom: none; }

/* ─── 뱃지 ─── */
.expire-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.expire-active { background: var(--success-bg); color: var(--success); }
.expire-expired { background: var(--danger-bg); color: var(--danger); }
.expire-unlimited { background: var(--info-bg); color: var(--info); }

/* ─── 로딩 ─── */
.spinner {
    display: inline-block;
    width: 22px; height: 22px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }

/* ─── 체크박스 커스텀 ─── */
input[type="checkbox"]:not(.toggle) {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-light);
    border-radius: 4px;
    background: var(--bg-input);
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    flex-shrink: 0;
}

/* 계정 선택 체크박스 (더 크고 눈에 띄게) */
input[type="checkbox"].account-select-check {
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
    width: 20px !important;
    height: 20px !important;
    min-width: 20px !important;
    min-height: 20px !important;
    border: 2px solid var(--accent) !important;
    border-radius: 5px;
    background: rgba(99,102,241,0.1) !important;
    flex-shrink: 0;
}
input[type="checkbox"].account-select-check:checked {
    background: var(--accent) !important;
    border-color: var(--accent) !important;
    box-shadow: 0 0 8px rgba(99,102,241,0.5);
}
input[type="checkbox"].account-select-check:checked::after {
    font-size: 13px;
    top: 0px;
    left: 3px;
    color: #fff;
}

input[type="checkbox"]:not(.toggle):checked {
    background: var(--accent);
    border-color: var(--accent);
}

input[type="checkbox"]:not(.toggle):checked::after {
    content: '✓';
    position: absolute;
    top: -1px;
    left: 2px;
    font-size: 11px;
    color: white;
    font-weight: 700;
}

/* ─── 스크롤바 글로벌 ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* ─── 선택 하이라이트 ─── */
::selection {
    background: var(--accent);
    color: white;
}

/* ═══ 모바일 반응형 ═══ */

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 10px;
        padding: 12px 16px;
        text-align: center;
    }
    .header h1 { font-size: 18px; }
    .header .user-info {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }
    .header .user-info span { font-size: 12px; }

    .dashboard {
        grid-template-columns: 1fr;
        height: auto;
    }

    .sidebar {
        border-right: none;
        border-bottom: 1px solid var(--border);
        max-height: 40vh;
        overflow-y: auto;
        padding: 12px;
    }

    .main-panel { padding: 12px; }

    .login-box {
        width: 92vw;
        max-width: 400px;
        padding: 28px 22px;
    }
    .login-box h2 { font-size: 22px; }

    .card { padding: 14px; }
    .card h3 { font-size: 14px; }

    .group-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 10px 12px;
    }

    .group-item .title { width: 100%; }

    .group-item .controls {
        width: 100%;
        flex-wrap: wrap;
        gap: 6px;
    }

    .modal {
        width: 94vw;
        max-width: 440px;
        padding: 22px 18px;
        max-height: 88vh;
    }

    table { display: block; overflow-x: auto; }
    th, td { padding: 8px 10px; font-size: 12px; }

    .account-item { padding: 10px; }
    .account-item .phone { font-size: 13px; }

    .btn { padding: 7px 14px; font-size: 12px; }
    .btn-sm { padding: 5px 10px; font-size: 11px; }
    .btn-lg { padding: 10px 22px; font-size: 14px; }

    .toggle { width: 36px; height: 20px; }
    .toggle::before { width: 14px; height: 14px; }
    .toggle:checked::before { transform: translateX(16px); }

    .form-group input, .form-group textarea, .form-group select {
        font-size: 16px;
        padding: 10px 12px;
    }

    .tab { padding: 8px 16px; font-size: 13px; }
}

@media (max-width: 400px) {
    .header h1 { font-size: 16px; }
    .login-box { padding: 22px 16px; }
    .login-box h2 { font-size: 20px; }
    .sidebar { max-height: 35vh; padding: 10px; }
    .main-panel { padding: 10px; }
    .card { padding: 12px; }
    .modal { padding: 18px 14px; }
}