/* ===== THEME VARIABLES ===== */
:root,
[data-theme="light"] {
    --sidebar-width: 260px;
    --header-height: 60px;
    --secondary-color: #0085FF;
    --accent-color: #FFCC5D;
    --transition: all 0.25s ease;

    --primary-color: #202020;
    --bg-body: #F8F9FA;
    --bg-light: #F0F1F3;
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    --bg-header: #ffffff;
    --border-color: rgba(32, 32, 32, 0.08);
    --text-muted: rgba(32, 32, 32, 0.45);
    --nav-link-color: rgba(32, 32, 32, 0.72);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-card: 0 8px 24px rgba(0,0,0,0.07);
}

[data-theme="dark"] {
    --primary-color: #DDE1E7;
    --bg-body: #0F1117;
    --bg-light: #1A1E26;
    --bg-card: #1C2030;
    --bg-sidebar: #151921;
    --bg-header: #151921;
    --border-color: rgba(255, 255, 255, 0.07);
    --text-muted: rgba(221, 225, 231, 0.38);
    --nav-link-color: rgba(221, 225, 231, 0.62);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-card: 0 8px 24px rgba(0,0,0,0.4);
}

/* ===== RESET ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { transition: background 0.2s ease, color 0.2s ease; }
body {
    font-family: 'Poppins', 'Noto Sans TC', sans-serif;
    background: var(--bg-body);
    color: var(--primary-color);
    overflow-x: hidden;
}

/* ===== HEADER ===== */
.erp-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-height);
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    padding: 0 1.25rem;
    gap: 0.75rem;
    box-shadow: var(--shadow-sm);
}
.header-left  { display: flex; align-items: center; gap: 0.75rem; }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; }

.menu-toggle {
    background: none; border: none;
    font-size: 1.4rem; color: var(--primary-color);
    cursor: pointer; padding: 0.25rem 0.4rem;
    border-radius: 8px; display: none; line-height: 1;
    transition: var(--transition);
}
.menu-toggle:hover { background: var(--bg-light); }

.header-logo {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 1.1rem; font-weight: 700;
    color: var(--primary-color); text-decoration: none; letter-spacing: -0.3px;
}
.header-logo .bi { color: var(--secondary-color); font-size: 1.3rem; }

.theme-toggle {
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--border-color); border-radius: 50%;
    background: var(--bg-light); color: var(--primary-color);
    cursor: pointer; font-size: 1rem; transition: var(--transition); flex-shrink: 0;
}
.theme-toggle:hover {
    background: var(--secondary-color); border-color: var(--secondary-color);
    color: #fff; transform: rotate(15deg);
}

.user-info {
    display: flex; align-items: center; gap: 0.6rem;
    padding: 0.35rem 0.85rem 0.35rem 0.4rem;
    background: var(--bg-light); border: 1px solid var(--border-color);
    border-radius: 50px; cursor: pointer; transition: var(--transition);
    font-size: 0.875rem; font-weight: 500; color: var(--primary-color);
}
.user-info:hover { filter: brightness(0.96); }

.user-avatar {
    width: 32px; height: 32px; border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 0.8rem; font-weight: 700; flex-shrink: 0;
}

.dropdown-menu {
    background: var(--bg-card); border-color: var(--border-color); box-shadow: var(--shadow-card);
}
.dropdown-item { color: var(--primary-color); font-size: 0.875rem; }
.dropdown-item:hover { background: var(--bg-light); color: var(--primary-color); }

/* ===== SIDEBAR ===== */
.erp-sidebar {
    position: fixed;
    top: var(--header-height); left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background: var(--bg-sidebar); border-right: 1px solid var(--border-color);
    overflow-y: auto; overflow-x: hidden;
    transition: transform 0.3s ease; z-index: 999;
    scrollbar-width: thin; scrollbar-color: var(--border-color) transparent;
}
.erp-sidebar::-webkit-scrollbar { width: 4px; }
.erp-sidebar::-webkit-scrollbar-track { background: transparent; }
.erp-sidebar::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

.sidebar-overlay {
    display: none; position: fixed;
    top: var(--header-height); left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5); z-index: 998;
}
.sidebar-overlay.show { display: block; }

.sidebar-nav { padding: 1rem 0 2rem; }
.nav-section { margin-bottom: 0.5rem; }
.nav-section-title {
    padding: 0.75rem 1.25rem 0.35rem;
    font-size: 0.7rem; font-weight: 600; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.6px;
}
.nav-list { list-style: none; }

.nav-link {
    display: flex; align-items: center; gap: 0.7rem;
    padding: 0.6rem 1.25rem;
    color: var(--nav-link-color); text-decoration: none;
    font-size: 0.875rem; font-weight: 400;
    transition: var(--transition); position: relative;
    width: 100%; border: none; background: none; text-align: left; cursor: pointer;
}
.nav-link:hover { background: transparent; color: inherit; }
.nav-link.active { color: var(--secondary-color); font-weight: 600; }
.nav-parent.active, .nav-child.active { background: rgba(0,133,255,0.08); }

.nav-icon { font-size: 1.05rem; width: 20px; text-align: center; flex-shrink: 0; }
.nav-arrow { margin-left: auto; font-size: 0.7rem; transition: transform 0.2s ease; opacity: 0.45; }
.nav-parent[aria-expanded="true"] .nav-arrow { transform: rotate(90deg); }
.nav-submenu { padding-left: 0; }
.nav-child { padding-left: 2.5rem; font-size: 0.82rem; }

/* ===== MAIN CONTENT ===== */
.erp-main {
    margin-left: var(--sidebar-width);
    margin-top: var(--header-height);
    padding: 2rem;
    min-height: calc(100vh - var(--header-height));
}

/* ===== PAGE HEADER ===== */
.page-header { margin-bottom: 2rem; }
.page-title { font-size: 1.875rem; font-weight: 700; color: var(--primary-color); letter-spacing: -0.5px; margin-bottom: 0.25rem; }
.page-subtitle { font-size: 0.9rem; color: var(--text-muted); }

/* ===== STATS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem; margin-bottom: 2rem;
}
.stat-card {
    background: var(--bg-card); border-radius: 16px;
    padding: 1.5rem; border: 1px solid var(--border-color); transition: var(--transition);
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); }
.stat-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; margin-bottom: 1rem;
}
.stat-icon.blue   { background: rgba(0,133,255,0.12);  color: var(--secondary-color); }
.stat-icon.yellow { background: rgba(255,204,93,0.18);  color: #D9AC48; }
.stat-icon.green  { background: rgba(40,199,111,0.12);  color: #28C76F; }
.stat-icon.purple { background: rgba(115,103,240,0.12); color: #7367F0; }
.stat-value { font-size: 1.75rem; font-weight: 700; color: var(--primary-color); margin-bottom: 0.2rem; line-height: 1; }
.stat-label { font-size: 0.82rem; color: var(--text-muted); }

/* ===== SECTION TITLE ===== */
.section-title {
    font-size: 1.1rem; font-weight: 600; color: var(--primary-color);
    margin-bottom: 1.25rem; display: flex; align-items: center; gap: 0.5rem;
}
.section-title .bi { color: var(--secondary-color); }

/* ===== FILTER BAR ===== */
.filter-bar {
    display: flex; align-items: flex-end; gap: 1rem;
    margin-bottom: 1.25rem; flex-wrap: wrap;
}
.filter-group { display: flex; flex-direction: column; gap: 0.35rem; }
.filter-label { font-size: 0.75rem; font-weight: 600; color: var(--text-muted); }
.filter-select {
    height: 38px; padding: 0 0.8rem;
    border: 1px solid var(--border-color); border-radius: 9px;
    font-size: 0.85rem; background: var(--bg-card); color: var(--primary-color);
    outline: none; cursor: pointer; min-width: 140px;
}

/* ===== SEARCH ===== */
.search-wrap { position: relative; display: flex; align-items: center; }
.search-icon {
    position: absolute; left: 0.75rem; color: var(--text-muted);
    font-size: 0.85rem; pointer-events: none;
}
.search-input {
    padding: 0.45rem 0.9rem 0.45rem 2.1rem;
    border: 1px solid var(--border-color); border-radius: 8px;
    font-size: 0.85rem; background: var(--bg-light); color: var(--primary-color);
    outline: none; width: 240px; transition: var(--transition);
}
.search-input:focus { border-color: var(--secondary-color); box-shadow: 0 0 0 3px rgba(0,133,255,0.1); }
.search-input::placeholder { color: var(--text-muted); }

/* ===== BUTTONS ===== */
.btn-add {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.55rem 1.1rem; background: var(--secondary-color);
    color: #fff; border: none; border-radius: 10px;
    font-size: 0.875rem; font-weight: 500; cursor: pointer;
    transition: var(--transition); white-space: nowrap; text-decoration: none;
}
.btn-add:hover {
    background: #0075e0; color: #fff;
    transform: translateY(-1px); box-shadow: 0 4px 14px rgba(0,133,255,0.35);
}
.btn-save {
    display: inline-flex; align-items: center; gap: 0.4rem;
    height: 40px; padding: 0 1.5rem; border: none; border-radius: 10px;
    background: var(--secondary-color); color: #fff;
    font-size: 0.875rem; font-weight: 600; cursor: pointer;
    transition: var(--transition); box-shadow: 0 4px 12px rgba(0,133,255,0.3);
}
.btn-save:hover:not(:disabled) {
    background: #006fe0; box-shadow: 0 6px 16px rgba(0,133,255,0.4); transform: translateY(-1px);
}
.btn-save:disabled { opacity: 0.7; cursor: not-allowed; }
.btn-cancel {
    display: inline-flex; align-items: center; gap: 0.4rem;
    height: 40px; padding: 0 1.25rem;
    border: 1.5px solid var(--border-color); border-radius: 10px;
    background: var(--bg-card); color: var(--text-muted);
    font-size: 0.875rem; font-weight: 500; text-decoration: none; cursor: pointer; transition: var(--transition);
}
.btn-cancel:hover { border-color: var(--secondary-color); color: var(--secondary-color); background: var(--bg-card); }
.btn-back {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 1rem; border: 1px solid var(--border-color);
    border-radius: 10px; background: var(--bg-card); color: var(--primary-color);
    text-decoration: none; font-size: 0.875rem; transition: var(--transition);
}
.btn-back:hover { background: var(--bg-light); color: var(--primary-color); }
.btn-danger {
    display: inline-flex; align-items: center; gap: 0.4rem;
    height: 40px; padding: 0 1.25rem; border: none; border-radius: 10px;
    background: #dc3545; color: #fff; font-size: 0.875rem; font-weight: 500;
    cursor: pointer; transition: var(--transition);
}
.btn-danger:hover { background: #c82333; }

/* ===== DATA CARD & TABLE ===== */
.data-card {
    background: var(--bg-card); border-radius: 16px;
    border: 1px solid var(--border-color); overflow: hidden;
}
.data-card-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 1.25rem; border-bottom: 1px solid var(--border-color);
    gap: 1rem; flex-wrap: wrap;
}
.total-badge { font-size: 0.82rem; color: var(--text-muted); font-weight: 500; }
.table-wrap { overflow-x: auto; }
.erp-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.erp-table thead tr { background: var(--bg-light); }
.erp-table th {
    padding: 0.8rem 1.25rem; text-align: left;
    font-size: 0.75rem; font-weight: 600; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.4px; white-space: nowrap;
    border-bottom: 1px solid var(--border-color);
}
.erp-table td {
    padding: 0.9rem 1.25rem; color: var(--primary-color);
    border-bottom: 1px solid var(--border-color); vertical-align: middle;
}
.erp-table tbody tr:last-child td { border-bottom: none; }
.erp-table tbody tr { transition: background 0.15s ease; }
.erp-table tbody tr:hover { background: var(--bg-light); }
.placeholder-row td { text-align: center; color: var(--text-muted); padding: 2.5rem; }

/* ===== ACTION BUTTONS ===== */
.action-wrap { display: flex; gap: 0.4rem; }
.btn-action-edit, .btn-action-delete {
    display: inline-flex; align-items: center; justify-content: center;
    width: 30px; height: 30px; border-radius: 7px;
    border: 1px solid var(--border-color); background: var(--bg-card);
    font-size: 0.82rem; cursor: pointer; transition: var(--transition); text-decoration: none;
}
.btn-action-edit { color: var(--secondary-color); }
.btn-action-edit:hover { background: rgba(0,133,255,0.08); border-color: var(--secondary-color); }
.btn-action-delete { color: #dc3545; border-color: rgba(220,53,69,0.25); background: rgba(220,53,69,0.05); }
.btn-action-delete:hover { background: #dc3545; border-color: #dc3545; color: #fff; }

/* ===== FORM CARD ===== */
.form-card {
    background: var(--bg-card); border-radius: 16px;
    border: 1px solid var(--border-color); overflow: hidden;
}
.form-tabs {
    display: flex; list-style: none;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-light); margin: 0; padding: 0;
    overflow-x: auto; scrollbar-width: none;
}
.form-tabs::-webkit-scrollbar { display: none; }
.form-tab {
    display: flex; align-items: center; gap: 0.4rem;
    padding: 0.9rem 1.4rem; font-size: 0.85rem; font-weight: 500;
    color: var(--text-muted); cursor: pointer; transition: var(--transition);
    white-space: nowrap; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.form-tab:hover { color: var(--primary-color); }
.form-tab.active { color: var(--secondary-color); border-bottom-color: var(--secondary-color); background: var(--bg-card); }
.tab-pane { display: none; padding: 1.75rem; }
.tab-pane.active { display: block; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem; }
.col-full { grid-column: 1 / -1; }
.section-divider {
    font-size: 0.75rem; font-weight: 600; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.5px;
    margin: 1.5rem 0 0.75rem; padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}
.form-footer {
    display: flex; justify-content: space-between; align-items: center;
    gap: 0.75rem; padding: 1.25rem 1.75rem;
    border-top: 1px solid var(--border-color); background: var(--bg-light);
}
.form-footer-right { display: flex; gap: 0.75rem; }

/* ===== FORM GROUPS ===== */
.form-group-erp { display: flex; flex-direction: column; gap: 0.4rem; }
.erp-label { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); letter-spacing: 0.2px; }
.erp-label .required { color: #e74c3c; margin-left: 2px; }
.erp-input {
    width: 100%; height: 42px; padding: 0 0.9rem;
    border: 1.5px solid var(--border-color); border-radius: 10px;
    font-size: 0.875rem; background: var(--bg-light); color: var(--primary-color);
    outline: none; transition: var(--transition);
}
.erp-input:focus {
    border-color: var(--secondary-color); background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(0,133,255,0.1);
}
.erp-input::placeholder { color: var(--text-muted); font-size: 0.82rem; }
.erp-textarea {
    width: 100%; padding: 0.65rem 0.9rem;
    border: 1.5px solid var(--border-color); border-radius: 10px;
    font-size: 0.875rem; background: var(--bg-light); color: var(--primary-color);
    outline: none; resize: vertical; transition: var(--transition);
}
.erp-textarea:focus {
    border-color: var(--secondary-color); background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(0,133,255,0.1);
}

/* ===== DETAIL CARD ===== */
.detail-card {
    background: var(--bg-card); border-radius: 16px;
    border: 1px solid var(--border-color); overflow: hidden; margin-bottom: 1.25rem;
}
.detail-card-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 1.25rem; border-bottom: 1px solid var(--border-color);
}
.detail-card-title { font-size: 0.875rem; font-weight: 600; color: var(--primary-color); display: flex; align-items: center; gap: 0.5rem; }
.detail-card-title .bi { color: var(--secondary-color); }
.detail-card-body { padding: 1.25rem; }
.detail-row {
    display: grid; grid-template-columns: 120px 1fr;
    gap: 0.5rem; padding: 0.55rem 0;
    border-bottom: 1px solid var(--border-color); font-size: 0.875rem;
    align-items: start;
}
.detail-row:last-child { border-bottom: none; }
.detail-label { color: var(--text-muted); font-size: 0.8rem; }
.detail-value { color: var(--primary-color); font-weight: 500; }

/* ===== INTERACTION LIST ===== */
.interaction-item {
    padding: 1rem 1.25rem; border-bottom: 1px solid var(--border-color);
}
.interaction-item:last-child { border-bottom: none; }
.interaction-meta { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.35rem; flex-wrap: wrap; }
.interaction-note { font-size: 0.82rem; color: var(--text-muted); line-height: 1.5; }

/* ===== BADGE ===== */
.type-badge {
    display: inline-flex; align-items: center; gap: 0.25rem;
    padding: 0.2rem 0.6rem; border-radius: 6px;
    font-size: 0.75rem; font-weight: 500; white-space: nowrap;
}
.type-badge.call   { background: rgba(0,133,255,0.1); color: var(--secondary-color); }
.type-badge.meet   { background: rgba(40,199,111,0.1); color: #28C76F; }
.type-badge.email  { background: rgba(115,103,240,0.1); color: #7367F0; }
.type-badge.card_sent { background: rgba(255,204,93,0.18); color: #D9AC48; }
.risk-badge {
    display: inline-flex; align-items: center; justify-content: center;
    width: 26px; height: 26px; border-radius: 7px;
    font-size: 0.75rem; font-weight: 700;
}
.risk-1 { background: rgba(40,199,111,0.1); color: #28C76F; }
.risk-2 { background: rgba(0,133,255,0.1); color: var(--secondary-color); }
.risk-3 { background: rgba(255,204,93,0.18); color: #D9AC48; }
.risk-4 { background: rgba(255,136,0,0.12); color: #FF8800; }
.risk-5 { background: rgba(220,53,69,0.1); color: #dc3545; }

/* ===== TOAST ===== */
.erp-toast {
    position: fixed; bottom: 1.5rem; right: 1.5rem;
    display: flex; align-items: center; gap: 0.6rem;
    padding: 0.75rem 1.1rem; border-radius: 12px;
    font-size: 0.875rem; font-weight: 500; color: #fff;
    z-index: 9999; opacity: 0; transform: translateY(8px);
    transition: opacity 0.25s ease, transform 0.25s ease; pointer-events: none;
}
.erp-toast.show { opacity: 1; transform: translateY(0); }
.erp-toast.success { background: #28a745; }
.erp-toast.error   { background: #dc3545; }
.erp-toast.warning { background: #D9AC48; }

/* ===== CHECKBOX / TAG GROUP ===== */
.tag-group {
    display: flex; flex-wrap: wrap; gap: 0.4rem;
    padding: 0.6rem 0.75rem;
    background: var(--bg-light); border: 1.5px solid var(--border-color);
    border-radius: 10px; min-height: 46px;
}
.tag-item {
    display: inline-flex; align-items: center; gap: 0.3rem;
    padding: 0.2rem 0.6rem; border-radius: 6px;
    background: rgba(0,133,255,0.1); color: var(--secondary-color);
    font-size: 0.78rem; font-weight: 500;
}
.tag-item .tag-remove {
    background: none; border: none; cursor: pointer;
    color: inherit; opacity: 0.7; padding: 0; font-size: 0.7rem; line-height: 1;
}
.tag-item .tag-remove:hover { opacity: 1; }

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
    .menu-toggle { display: block; }
    .erp-sidebar { transform: translateX(-100%); }
    .erp-sidebar.show { transform: translateX(0); }
    .erp-main { margin-left: 0; }
}
@media (max-width: 768px) {
    .form-grid { grid-template-columns: 1fr; }
    .filter-bar { flex-direction: column; align-items: stretch; }
}
@media (max-width: 576px) {
    .erp-main { padding: 1rem; }
    .page-title { font-size: 1.5rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .user-name { display: none; }
    .search-input { width: 100%; }
}