:root {
    --primary: #002d72;
    --primary-hover: #001f4d;
    --bg-color: #f8fafc;
    --panel-bg: #ffffff;
    --text-main: #002d72;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --pdf-bg: #ffffff;
    --pdf-text: #334155;
    --bsnl-blue: #0033a0;
    --bsnl-red: #e31837;
    --coral-blue: #002d72;
    --coral-orange: #f97316;

    /* Premium Layout Variables */
    --header-bg: rgba(255, 255, 255, 0.85);
    --tile-sidebar-width: 280px;
    --bg-gradient: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
    --active-border: #002d72;
}

/* --- PREMIUM UI COMPONENTS --- */

.top-header {
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text-main);
    padding: 0 40px;
    height: 75px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    z-index: 1000;
    border-bottom: 2px solid #e2e8f0;
}

.user-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 5px;
}

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

.app-body {
    display: flex;
    flex: 1;
    overflow: hidden;
    height: calc(100vh - 75px);
}

.tile-sidebar {
    width: var(--tile-sidebar-width);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-right: 2px solid #e2e8f0;
    display: flex;
    flex-direction: column;
    padding: 20px 15px;
    gap: 12px;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
    flex-shrink: 0;
    height: 100%;
}

/* Classic scrollbar for sidebar as per user preference for original look */
.tile-sidebar::-webkit-scrollbar {
    width: 6px;
}

.tile-sidebar::-webkit-scrollbar-track {
    background: #f1f5f9;
}

.tile-sidebar::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
}

.tile-sidebar::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.sidebar-header {
    display: none;
    /* Removed as requested */
}

.tile-sidebar .module-tile {
    background: white !important;
    border: 1px solid rgba(0, 0, 0, 0.08) !important;
    border-radius: 10px !important;
    padding: 10px 14px !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 12px !important;
    text-decoration: none !important;
    color: var(--text-main) !important;
    transition: all 0.2s ease !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05) !important;
    margin-bottom: 4px !important;
    width: 100% !important;
    box-sizing: border-box !important;
    min-height: 52px !important;
    /* Standardize height */
}

.tile-sidebar .module-tile i {
    width: 34px !important;
    height: 34px !important;
    background: #f1f5f9 !important;
    border-radius: 8px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 1.2rem !important;
    flex-shrink: 0 !important;
    margin: 0 !important;
}

.tile-sidebar .module-tile .tile-content {
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    text-align: left !important;
}

.tile-sidebar .module-tile h4 {
    margin: 0 !important;
    font-size: 0.95rem !important;
    font-weight: 600 !important;
    white-space: nowrap !important;
    color: var(--text-main) !important;
}

.tile-sidebar .module-tile:hover {
    transform: translateX(5px) !important;
    border-color: var(--primary) !important;
    background: #f8fafc !important;
}

.module-tile.active {
    border-color: var(--primary);
    background: #e0e7ff;
    border-left: 4px solid var(--primary);
}

.content-area {
    flex-grow: 1;
    overflow-y: auto;
    padding: 30px;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg-color);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.pdf-container {
    width: 210mm;
    min-width: 210mm;
    max-width: 210mm;
    background: white;
    margin: 0 auto;
    padding: 0;
}

/* App Header */
.app-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 15px 40px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 20px;
}

.coral-logo {
    font-size: 1.5em;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.c-blue {
    color: var(--coral-blue);
}

.c-orange {
    color: var(--coral-orange);
}

.app-title {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95em;
    padding-left: 20px;
    border-left: 2px solid var(--border-color);
}

.container {
    display: flex;
    gap: 30px;
    width: 95%;
    max-width: 1600px;
    margin: 30px auto;
    align-items: flex-start;
}

/* Form Section */
.form-section {
    flex: 1;
    min-width: 400px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 90px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.form-section::-webkit-scrollbar {
    width: 6px;
}

.form-section::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.form-section h2 {
    margin: 0 0 5px 0;
    font-weight: 700;
    color: var(--text-main);
    font-size: 1.5em;
}

.form-subtitle {
    color: var(--text-muted);
    font-size: 0.9em;
    margin-bottom: 25px;
}

.section-heading {
    font-size: 1.1em;
    color: var(--primary);
    border-bottom: 2px solid #ebf8ff;
    padding-bottom: 8px;
    margin: 0 0 10px 0;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.full-width {
    grid-column: span 2;
}

.input-group label {
    margin-bottom: 6px;
    font-size: 0.85em;
    font-weight: 600;
    color: var(--text-main);
}

.input-group input,
.input-group select {
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid #cbd5e1;
    background: #f8fafc;
    color: var(--text-main);
    font-size: 0.95em;
    outline: none;
    transition: all 0.2s ease;
    font-family: 'Inter', sans-serif;
}

.input-group input:focus,
.input-group select:focus {
    border-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 8px;
    background: var(--primary);
    color: white;
    font-size: 1.05em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* Preview Section */
.preview-wrapper {
    flex: 1.8;
    min-width: 800px;
    padding: 0 20px;
}

.preview-section {
    width: 100%;
    background: var(--pdf-bg);
    color: var(--pdf-text);
    border-radius: 4px;
    padding: 60px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.proposal-header {
    border-bottom: 3px solid var(--bsnl-blue);
    padding-bottom: 25px;
    margin-bottom: 30px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.bsnl-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.bsnl-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 2em;
    font-weight: 800;
    color: var(--bsnl-blue);
    line-height: 1;
    letter-spacing: 1px;
}

.tagline {
    font-size: 0.85em;
    color: var(--bsnl-red);
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.proposal-meta {
    text-align: right;
}

.proposal-meta h1 {
    margin: 0 0 5px 0;
    color: var(--text-main);
    font-weight: 800;
    font-size: 1.6em;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.proposal-meta p {
    color: var(--text-muted);
    margin: 0;
    font-weight: 500;
    font-size: 0.9em;
}

.sender-info-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 15px 20px;
    margin-bottom: 25px;
}

.info-row {
    margin-bottom: 6px;
    font-size: 0.95em;
    color: var(--pdf-text);
}

.info-row:last-child {
    margin-bottom: 0;
}

.info-row strong {
    color: var(--text-main);
    display: inline-block;
    width: 100px;
}

.intro-text p {
    font-size: 0.95em;
    line-height: 1.6;
    color: var(--pdf-text);
    margin-bottom: 25px;
}

.category-features {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 35px;
}

.category-features h3 {
    margin: 0 0 12px 0;
    color: #166534;
    font-size: 1.1em;
}

.category-features ul {
    margin: 0;
    padding-left: 5px;
    list-style-type: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.category-features li {
    font-size: 0.9em;
    color: #15803d;
    display: flex;
    align-items: center;
}

.category-features li::before {
    content: "✓";
    font-weight: bold;
    margin-right: 8px;
    color: #22c55e;
}

.table-heading {
    margin: 0 0 15px 0;
    color: var(--text-main);
    font-size: 1.2em;
}

.proposal-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 35px;
}

.proposal-table th,
.proposal-table td {
    padding: 14px 16px;
    border-bottom: 1px solid #e2e8f0;
    font-size: 0.95em;
}

.proposal-table th {
    background: #f8fafc;
    font-weight: 600;
    color: #475569;
    text-align: left;
    border-top: 1px solid #e2e8f0;
}

.proposal-table tfoot th {
    background: transparent;
    padding-top: 20px;
    border-bottom: none;
}

.proposal-notes {
    background: #f8fafc;
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid var(--bsnl-blue);
    margin-bottom: 30px;
}

.proposal-notes h3 {
    margin-top: 0;
    color: var(--text-main);
    margin-bottom: 15px;
    font-size: 1.05em;
}

.sip-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.sip-item {
    display: flex;
    flex-direction: column;
}

.sip-label {
    font-size: 0.8em;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.sip-value {
    font-size: 1em;
    font-weight: 700;
    color: var(--text-main);
}

/* Modal and Preview Adjustments */
.modal-content {
    animation: modalScale 0.3s ease-out;
}

@keyframes modalScale {
    from {
        transform: scale(0.95);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

#modalBody {
    background: #f1f5f9;
}

#modalBody .preview-section {
    box-shadow: none;
    border: none;
    border-radius: 0;
}

/* Force PDF Page Breaks */
.page-break {
    page-break-before: always;
    break-before: page;
}

.proposal-footer {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
    font-size: 0.85em;
    color: var(--text-muted);
}

/* Print Styles specifically aimed at html2pdf scale issues */
@media print {
    .no-print {
        display: none !important;
    }

    body {
        margin: 0;
        padding: 0;
        background: white;
    }

    .container {
        width: 100%;
        margin: 0 !important;
        padding: 0 !important;
        max-width: none !important;
        display: block !important;
    }

    .preview-wrapper {
        min-width: 100%;
        display: block !important;
    }

    .preview-section {
        padding: 10mm !important;
        box-shadow: none !important;
        border: none !important;
        width: 100% !important;
        background: white !important;
    }
}

/* Responsive */
@media (max-width: 1200px) {
    .container {
        flex-direction: column;
    }

    .form-section {
        position: static;
        width: 100%;
        max-height: none;
        box-sizing: border-box;
    }

    .preview-wrapper {
        min-width: 100%;
    }
}