/* ==========================================================================
   PASTECH STP QUOTATION PORTAL - PREMIUM CORPORATE LIGHT THEME
   Theme: Elegant Light Slate (白底黑字)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Color Tokens (Light Corporate Theme) */
    --bg-dark: hsl(210, 40%, 98%); /* Off-white slate background */
    --bg-card: hsl(0, 0%, 100%); /* Pure white card background */
    --bg-card-hover: hsl(210, 40%, 96%);
    --bg-input: hsl(0, 0%, 100%);
    
    --border-color: hsl(214, 32%, 91%); /* Clean thin slate border */
    --border-hover: hsl(214, 32%, 82%);
    
    --primary: hsl(221, 83%, 53%); /* Professional Business Blue */
    --primary-glow: hsla(221, 83%, 53%, 0.08);
    --primary-hover: hsl(221, 83%, 45%);
    
    --success: hsl(142, 76%, 36%); /* Professional success emerald */
    --success-glow: hsla(142, 76%, 36%, 0.08);
    --success-hover: hsl(142, 76%, 30%);
    
    --warning: hsl(38, 92%, 46%);
    --warning-glow: hsla(38, 92%, 46%, 0.08);
    
    --danger: hsl(0, 72%, 51%);
    --danger-glow: hsla(0, 72%, 51%, 0.08);
    --danger-hover: hsl(0, 72%, 45%);
    
    --text-primary: hsl(222, 47%, 11%); /* Deep charcoal text for readability */
    --text-secondary: hsl(215, 25%, 38%); /* Mid-tone slate text */
    --text-muted: hsl(215, 16%, 58%);
    
    /* Layout Tokens */
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.04), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.03), 0 4px 6px -2px rgba(0,0,0,0.03);
}

/* --------------------------------------------------------------------------
   Core Resets & Page Backgrounds
   -------------------------------------------------------------------------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-dark);
    /* Soft ambient background radial gradients */
    background-image: 
        radial-gradient(at 0% 0%, hsla(221, 83%, 53%, 0.02) 0px, transparent 50%),
        radial-gradient(at 100% 100%, hsla(280, 80%, 50%, 0.01) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Premium Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* --------------------------------------------------------------------------
   Auth Section (Login Page)
   -------------------------------------------------------------------------- */
.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    background: radial-gradient(circle at center, hsla(221, 83%, 53%, 0.03) 0%, transparent 70%);
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 440px;
    padding: 45px 40px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.auth-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.auth-header {
    text-align: center;
    margin-bottom: 35px;
}

.auth-logo {
    font-size: 34px;
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   App Dashboard Core Layout
   -------------------------------------------------------------------------- */
.dashboard-container {
    display: flex;
    min-height: 100vh;
}

/* Elegant Light Sidebar */
.sidebar {
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    width: 280px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    padding: 35px 20px;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-logo {
    font-size: 26px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 45px;
    padding-left: 10px;
    letter-spacing: -0.5px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 13px 18px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 1px solid transparent;
}

.nav-item span {
    font-size: 16px;
}

.nav-item:hover {
    color: var(--text-primary);
    background: #f1f5f9;
}

.nav-item.active {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-glow);
}

.sidebar-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 25px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.user-profile-widget {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-left: 8px;
}

.avatar-initial {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, #6366f1 100%);
    color: white;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.15);
}

.profile-info {
    display: flex;
    flex-direction: column;
}

.profile-name {
    font-weight: 700;
    font-size: 14px;
    color: var(--text-primary);
}

.profile-role {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    margin-left: 280px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 35px;
    width: calc(100% - 280px);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 25px;
}

.page-title {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.8px;
}

.page-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Premium Cards & Components
   -------------------------------------------------------------------------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 25px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.stat-title {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -1px;
}

/* Card Tables with Sticky Headers */
.table-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.custom-table th {
    background: #f8fafc; /* Light slate grey table header background */
    padding: 16px 20px;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.custom-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-primary);
}

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

.custom-table tr {
    transition: var(--transition);
}

.custom-table tbody tr:hover {
    background: #f8fafc; /* Gentle light row hover */
}

/* --------------------------------------------------------------------------
   Premium Form Controls
   -------------------------------------------------------------------------- */
.form-group {
    margin-bottom: 22px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* White Corporate Input fields */
.form-control {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid #cbd5e1; /* Clear slate border */
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 12px 16px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.form-control::placeholder {
    color: #94a3b8;
}

/* Custom styled dropdown select in Light Mode */
select.form-control {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    /* Clean dark slate arrow SVG background */
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'></polyline></svg>");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 16px;
    padding-right: 40px;
    cursor: pointer;
}

select.form-control option {
    background: white;
    color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   Buttons & Transitions
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border-color: #cbd5e1;
}

.btn-secondary:hover {
    background: #f1f5f9;
    border-color: #94a3b8;
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: var(--danger-hover);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25);
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

/* Badges */
.badge {
    display: inline-flex;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: var(--success-glow);
    color: var(--success);
    border: 1px solid var(--success);
}

.badge-warning {
    background: var(--warning-glow);
    color: var(--warning);
    border: 1px solid var(--warning);
}

.badge-primary {
    background: var(--primary-glow);
    color: var(--primary);
    border: 1px solid var(--primary);
}

.badge-secondary {
    background: #f1f5f9;
    color: var(--text-secondary);
    border: 1px solid #cbd5e1;
}

/* Alerts */
.alert {
    padding: 16px 22px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    margin-bottom: 25px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.alert-danger {
    background: var(--danger-glow);
    color: hsl(0, 75%, 35%);
    border-color: var(--danger);
}

.alert-success {
    background: var(--success-glow);
    color: hsl(142, 75%, 25%);
    border-color: var(--success);
}

/* --------------------------------------------------------------------------
   Responsive Layout & Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .sidebar {
        width: 80px;
        padding: 30px 10px;
    }
    .sidebar-logo {
        font-size: 18px;
        text-align: center;
        padding: 0;
    }
    .nav-item {
        justify-content: center;
        padding: 14px 0;
    }
    .nav-item span {
        font-size: 18px;
    }
    /* Hide navigation labels on tablet */
    .nav-item {
        font-size: 0;
    }
    .profile-info, .sidebar-footer .nav-item {
        display: none;
    }
    .main-content {
        margin-left: 80px;
        width: calc(100% - 80px);
        padding: 30px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        display: none; /* Hide sidebar completely on mobile screens */
    }
    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 20px;
    }
    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    .content-header .flex-row {
        width: 100%;
        justify-content: flex-end;
    }
}

/* Utility Helpers */
.text-right { text-align: right; }
.text-center { text-align: center; }
.flex-row { display: flex; align-items: center; gap: 15px; }
.space-between { justify-content: space-between; }

/* --------------------------------------------------------------------------
   Universal Corporate Printing Mode
   -------------------------------------------------------------------------- */
@media print {
    body {
        background: white !important;
        color: black !important;
        background-image: none !important;
    }
    .sidebar, .btn, .content-header .flex-row, .badge, .quick-actions, canvas, .alert {
        display: none !important;
    }
    .main-content {
        margin-left: 0 !important;
        padding: 0 !important;
        width: 100% !important;
    }
    .table-card {
        background: white !important;
        border: none !important;
        box-shadow: none !important;
        color: black !important;
    }
    .custom-table th {
        background: #f3f4f6 !important;
        color: black !important;
        border-bottom: 2px solid #ccc !important;
    }
    .custom-table td {
        color: black !important;
        border-bottom: 1px solid #eee !important;
    }
    .section-header-row {
        background: #e5e7eb !important;
        color: black !important;
    }
}