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

:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2a2a2a;
    --bg-tertiary: #3a3a3a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --accent-color: #10b981;
    --accent-light: #34d399;
    --success-color: #4ade80;
    --warning-color: #facc15;
    --danger-color: #ef4444;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

body.light-mode {
    --bg-primary: #f4f5f7;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eef0f3;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border-color: #d0d0d0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s, color 0.3s;
    min-height: 100vh;
}

/* Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
    gap: 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.back-btn {
    font-size: 13px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}

.back-btn:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    width: 36px;
    height: 36px;
    background-color: var(--accent-color);
    color: #ffffff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
    flex-shrink: 0;
}

.brand-text { display: flex; flex-direction: column; }
.brand-name { font-size: 16px; font-weight: 700; line-height: 1.2; }
.brand-tag { font-size: 11px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.7px; }

/* Buttons */
.btn {
    padding: 8px 18px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #ffffff;
}

.btn-primary:hover { opacity: 0.9; }

/* Theme Toggle */
.theme-toggle {
    width: 48px;
    height: 26px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 3px;
    transition: all 0.3s;
    flex-shrink: 0;
}

.theme-toggle.light { justify-content: flex-end; }

.theme-toggle-circle {
    width: 20px;
    height: 20px;
    background-color: var(--text-primary);
    border-radius: 50%;
    transition: all 0.3s;
}

.theme-toggle.light .theme-toggle-circle { background-color: var(--accent-color); }

/* Main */
.main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 32px;
    width: 100%;
}

/* Toolbar */
.toolbar {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-wrap {
    position: relative;
    flex: 1;
    min-width: 220px;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 9px 12px 9px 36px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.search-input::placeholder { color: var(--text-secondary); }

.filter-tabs {
    display: flex;
    gap: 6px;
    background-color: var(--bg-secondary);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.tab-btn {
    padding: 6px 14px;
    border: none;
    background-color: transparent;
    color: var(--text-secondary);
    border-radius: 5px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.tab-btn.active {
    background-color: var(--accent-color);
    color: #ffffff;
}

.tab-btn:hover:not(.active) { color: var(--text-primary); }

.rfq-count {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

/* Table */
.rfq-table-wrap {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.rfq-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.rfq-table thead tr {
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.rfq-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    white-space: nowrap;
}

.rfq-table td {
    padding: 14px 16px;
    color: var(--text-primary);
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.rfq-table tbody tr:last-child td { border-bottom: none; }

.rfq-table tbody tr {
    cursor: pointer;
    transition: background-color 0.15s;
}

.rfq-table tbody tr:hover { background-color: var(--bg-tertiary); }

.rfq-code {
    font-weight: 700;
    color: var(--accent-color);
    font-size: 13px;
}

.rfq-project { font-weight: 500; }

.rfq-date { color: var(--text-secondary); font-size: 13px; white-space: nowrap; }

/* Progress */
.progress-wrap { display: flex; align-items: center; gap: 10px; }

.progress-bar {
    width: 100px;
    height: 6px;
    background-color: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    flex-shrink: 0;
}

.progress-fill {
    height: 100%;
    background-color: var(--accent-color);
    border-radius: 3px;
    transition: width 0.3s;
}

.progress-text {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* Status Badge */
.status-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.status-active { background-color: rgba(16, 185, 129, 0.15); color: #10b981; }
.status-draft { background-color: rgba(250, 204, 21, 0.15); color: #ca9a02; }
.status-completed { background-color: rgba(96, 165, 250, 0.15); color: #60a5fa; }

body.light-mode .status-draft { color: #a07d00; }

.open-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    text-decoration: none;
}

.open-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    gap: 8px;
}

.empty-icon { font-size: 40px; }
.empty-title { font-size: 16px; font-weight: 600; color: var(--text-primary); }
.empty-text { font-size: 14px; color: var(--text-secondary); }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

@media (max-width: 768px) {
    .main { padding: 20px 16px; }
    .rfq-table th:nth-child(3),
    .rfq-table td:nth-child(3) { display: none; }
    .progress-bar { width: 60px; }
}