:root {
            --primary: #2d4a6b;
            --primary-hover: #203952;
            --primary-soft: #e8f0f6;
            --accent: #4a7fa5;
            --bg: #f3f6fa;
            --surface: #ffffff;
            --surface-2: #f8fafc;
            --card: #ffffff;
            --text: #172033;
            --muted: #64748b;
            --border: #d8e1eb;
            --input-bg: #ffffff;
            --success: #23c55e;
            --success-hover: #16a34a;
            --danger: #ef4444;
            --danger-hover: #dc2626;
            --shadow: 0 14px 34px rgba(21, 35, 54, 0.08);
            --shadow-soft: 0 8px 18px rgba(21, 35, 54, 0.06);
        }

        .dark-mode {
            --bg: #0b111a;
            --surface: #111a26;
            --surface-2: #0e1621;
            --card: #121c29;
            --text: #edf4fb;
            --muted: #9aabc0;
            --border: #223449;
            --input-bg: #0f1722;
            --primary-soft: #17283a;
            --shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
            --shadow-soft: 0 10px 26px rgba(0, 0, 0, 0.18);
        }

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

        html { scroll-behavior: smooth; }

        body {
            min-height: 100vh;
            font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
            background:
                linear-gradient(180deg, rgba(45, 74, 107, 0.08), transparent 320px),
                var(--bg);
            color: var(--text);
            padding: 28px 18px 44px;
            transition: background-color 0.25s, color 0.25s;
            line-height: 1.55;
        }

        .container {
            max-width: 1180px;
            margin: 0 auto;
        }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            padding: 22px 24px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 22px;
            box-shadow: var(--shadow);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 16px;
            min-width: 0;
        }

        .brand img {
            width: 82px;
            height: 64px;
            object-fit: contain;
            border-radius: 10px;
            background: var(--surface-2);
            border: 1px solid var(--border);
            padding: 4px;
        }

        .brand h1 {
            font-size: 1.35rem;
            font-weight: 750;
            color: var(--text);
            letter-spacing: 0;
        }

        .brand p {
            margin-top: 2px;
            max-width: 540px;
            font-size: 0.8rem;
            color: var(--muted);
        }

        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 22px;
            margin-bottom: 18px;
            box-shadow: var(--shadow-soft);
        }

        .card-title {
            font-size: 1rem;
            font-weight: 750;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
            color: var(--text);
            display: flex;
            justify-content: flex-start;
            align-items: center;
            gap: 14px;
        }

        .card-title::before {
            content: '';
            width: 4px;
            height: 22px;
            border-radius: 999px;
            background: var(--accent);
            flex: 0 0 auto;
        }

        .card-title > span,
        .card-title > button {
            margin-left: 0;
        }

        .card-title > button {
            margin-left: auto;
        }

        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
            gap: 14px;
            margin-bottom: 14px;
        }

        .grid:last-child { margin-bottom: 0; }

        .field-wide-2 { grid-column: span 2; }
        .field-wide-3 { grid-column: span 3; }

        label {
            display: block;
            font-size: 0.72rem;
            color: var(--muted);
            margin-bottom: 6px;
            font-weight: 750;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        input {
            width: 100%;
            min-height: 42px;
            padding: 10px 12px;
            background: var(--input-bg);
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--text);
            font-size: 0.92rem;
            outline: none;
            transition: border-color 0.18s, box-shadow 0.18s, background-color 0.18s;
        }

        input::placeholder { color: color-mix(in srgb, var(--muted) 72%, transparent); }

        input:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); }

        input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
        }

        input[readonly] {
            opacity: 1;
            cursor: not-allowed;
            background: var(--primary-soft);
            border-color: color-mix(in srgb, var(--accent) 26%, var(--border));
        }

        .item-row {
            display: grid;
            grid-template-columns: minmax(240px, 2.3fr) minmax(72px, 0.7fr) minmax(110px, 0.9fr) minmax(90px, 0.7fr) minmax(120px, 1fr) 42px;
            gap: 12px;
            margin-bottom: 12px;
            align-items: end;
            padding: 14px;
            background: var(--surface-2);
            border-radius: 10px;
            border: 1px solid var(--border);
        }

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

        #items-container {
            padding-top: 16px;
        }
        .budget-summary-grid {
            grid-template-columns: 1fr 1.2fr;
            margin-top: 20px;
            border-top: 1px solid var(--border);
            padding-top: 20px;
        }

        .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 14px;
            align-items: center;
        }
        .header-actions {
            margin-top: 0;
            justify-content: flex-end;
        }

        button,
        .btn-secondary {
            min-height: 40px;
            padding: 10px 16px;
            border-radius: 8px;
            border: 1px solid transparent;
            font-weight: 700;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: transform 0.18s, box-shadow 0.18s, background-color 0.18s, border-color 0.18s;
            font-size: 0.86rem;
            font-family: inherit;
            text-decoration: none;
            white-space: nowrap;
        }

        button:hover,
        .btn-secondary:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 18px rgba(21, 35, 54, 0.12);
        }

        button:active,
        .btn-secondary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        button:disabled {
            cursor: not-allowed;
            opacity: 0.58;
            transform: none;
            box-shadow: none;
        }

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

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

        .btn-secondary {
            background: var(--surface-2) !important;
            color: var(--text) !important;
            border-color: var(--border) !important;
        }

        .btn-export {
            background: #6366f1;
            border-color: #6366f1;
        }

        .btn-add {
            background: var(--success);
            color: #052e16;
            border-color: transparent;
        }

        .btn-add:hover { background: var(--success-hover); color: white; }

        .btn-remove {
            width: 40px;
            min-width: 40px;
            padding: 0;
            background: var(--danger);
            color: white;
            border-radius: 8px;
        }

        .btn-remove:hover { background: var(--danger-hover); }

        .btn-whatsapp { background: #25d366; color: #052e16; }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
        }

        .btn-danger-outline {
            background: transparent;
            border-color: color-mix(in srgb, var(--danger) 42%, var(--border));
            color: var(--danger);
        }

        .btn-danger-outline:hover {
            background: color-mix(in srgb, var(--danger) 10%, transparent);
            box-shadow: 0 8px 18px rgba(239, 68, 68, 0.12);
        }

        .btn-support {
            background: #f59e0b;
            border-color: #f59e0b;
            color: #1f2937;
        }

        .btn-support:hover {
            background: #d97706;
            border-color: #d97706;
            color: white;
        }

        .file-button {
            cursor: pointer;
        }

        .file-button input[type="file"] {
            display: none;
        }

        .logo-upload-panel {
            display: grid;
            grid-template-columns: 132px minmax(0, 1fr);
            gap: 18px;
            align-items: center;
            margin-top: 16px;
            padding: 16px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--surface-2);
        }

        .logo-preview-box {
            position: relative;
            display: grid;
            place-items: center;
            width: 132px;
            min-height: 92px;
            border: 1px dashed color-mix(in srgb, var(--accent) 44%, var(--border));
            border-radius: 8px;
            background: var(--surface);
            overflow: hidden;
        }

        #logo-preview {
            display: none;
            width: 100%;
            height: 92px;
            object-fit: contain;
            padding: 8px;
        }

        .logo-preview-placeholder {
            color: var(--muted);
            font-size: 0.78rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .logo-preview-box.logo-has-image .logo-preview-placeholder {
            display: none;
        }

        .logo-upload-content {
            min-width: 0;
        }

        .logo-upload-label {
            margin-bottom: 4px;
            color: var(--text);
            font-size: 0.92rem;
            font-weight: 800;
        }

        .logo-upload-content p {
            max-width: 680px;
            margin-bottom: 12px;
            color: var(--muted);
            font-size: 0.84rem;
        }

        .logo-upload-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .helper-text {
            font-size: 0.82rem;
            color: var(--muted);
        }

        .section-note {
            margin: -6px 0 14px;
            color: var(--muted);
            font-size: 0.84rem;
        }

        .generate-panel {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
            margin-bottom: 18px;
            padding: 18px;
            border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
            border-radius: 12px;
            background: var(--surface);
            box-shadow: var(--shadow-soft);
        }

        .generate-panel h2 {
            margin-bottom: 3px;
            color: var(--text);
            font-size: 1.02rem;
            line-height: 1.25;
            letter-spacing: 0;
        }

        .generate-panel p {
            color: var(--muted);
            font-size: 0.86rem;
        }

        .generate-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: flex-end;
            align-items: center;
        }

        .btn-generate-pdf {
            min-height: 48px;
            padding-inline: 22px;
            font-size: 0.95rem;
            box-shadow: 0 10px 22px rgba(45, 74, 107, 0.22);
        }

        .save-panel {
            display: grid;
            gap: 10px;
            max-width: 560px;
        }

        .save-actions {
            display: grid;
            grid-template-columns: repeat(2, minmax(180px, 1fr));
            gap: 10px;
            align-items: center;
        }

        .save-actions button,
        .save-actions .btn-secondary {
            width: 100%;
            min-width: 0;
            min-height: 44px;
            margin: 0;
            padding: 11px 16px;
        }

        .btn-import {
            font-weight: 700;
            text-transform: none;
        }

        .filename-hint {
            font-size: 0.78rem;
            color: var(--muted);
        }

        .save-note {
            max-width: 760px;
            color: var(--muted);
            font-size: 0.84rem;
            line-height: 1.45;
        }

        .support-card {
            display: grid;
            grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
            gap: 22px;
            align-items: center;
            border-color: color-mix(in srgb, #f59e0b 36%, var(--border));
            background:
                linear-gradient(135deg, color-mix(in srgb, #f59e0b 10%, var(--card)), var(--card) 54%),
                var(--card);
        }

        .support-card h2 {
            margin: 8px 0 8px;
            font-size: 1.18rem;
            line-height: 1.25;
            letter-spacing: 0;
        }

        .support-card p {
            max-width: 700px;
            color: var(--muted);
            font-size: 0.92rem;
        }

        .support-eyebrow {
            display: inline-flex;
            width: fit-content;
            align-items: center;
            min-height: 26px;
            padding: 4px 10px;
            border-radius: 999px;
            background: color-mix(in srgb, #f59e0b 20%, transparent);
            color: color-mix(in srgb, #92400e 86%, var(--text));
            font-size: 0.72rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .support-box {
            padding: 14px;
            border: 1px solid color-mix(in srgb, #f59e0b 28%, var(--border));
            border-radius: 10px;
            background: color-mix(in srgb, var(--surface) 78%, #fff7ed);
        }

        .pix-row {
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto;
            gap: 10px;
            align-items: center;
        }

        #support-pix-key {
            font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
            font-size: 0.86rem;
        }

        .support-beneficiary {
            min-height: 1.2rem;
            margin-top: 8px;
            color: var(--muted);
            font-size: 0.82rem;
        }

        .support-qr {
            display: grid;
            justify-items: center;
            gap: 8px;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            color: var(--muted);
            font-size: 0.8rem;
            text-align: center;
        }

        .support-qr[hidden] {
            display: none;
        }

        .support-qr img {
            width: 160px;
            height: 160px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: white;
            padding: 8px;
        }

        .seo-content {
            margin: 22px 0 0;
            padding: 24px;
            border: 1px solid var(--border);
            border-radius: 12px;
            background: var(--surface);
            color: var(--text);
            box-shadow: var(--shadow-soft);
        }

        .seo-content h2 {
            margin-bottom: 10px;
            font-size: 1.1rem;
            line-height: 1.25;
            letter-spacing: 0;
        }

        .seo-content h3 {
            margin: 16px 0 4px;
            font-size: 0.94rem;
            letter-spacing: 0;
        }

        .seo-content p {
            max-width: 920px;
            color: var(--muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .seo-faq {
            margin-top: 8px;
        }

        .total-input {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.1rem;
        }

        .status-msg {
            position: fixed;
            top: 20px;
            right: 20px;
            max-width: min(380px, calc(100vw - 40px));
            padding: 12px 18px;
            border-radius: 8px;
            color: white;
            font-weight: 750;
            z-index: 1000;
            display: none;
            box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
        }

        .pdf-page-break { page-break-before: always; }
        .pdf-no-break { page-break-inside: avoid; }

        .pdf-table { width: 100%; border-collapse: collapse; margin-bottom: 15px; table-layout: fixed; }
        .pdf-table th, .pdf-table td {
            border: 1px solid #cbd5e1;
            padding: 8px 12px;
            text-align: left;
            word-wrap: break-word;
        }
        .pdf-table th { background: #f1f5f9; color: #475569; font-size: 9pt; text-transform: uppercase; }

        .pdf-header-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 20px; margin-bottom: 25px; border-bottom: 3px solid #2d4a6b; padding-bottom: 20px; align-items: center; }
        .pdf-logo img { max-height: 100px; width: auto; }
        .pdf-logo-fallback {
            display: inline-flex;
            min-height: 62px;
            max-width: 280px;
            align-items: center;
            padding: 10px 16px;
            background: #2d4a6b;
            color: white;
            font-size: 18pt;
            font-weight: 700;
            overflow-wrap: anywhere;
        }
        .pdf-company-details { text-align: right; font-size: 9pt; color: #475569; }
        .pdf-company-details h2 { color: #1e293b; font-size: 16pt; margin-bottom: 5px; }

        .pdf-section-header { background: #f8fafc; padding: 6px 10px; font-weight: bold; border-left: 4px solid #4a7fa5; margin-bottom: 10px; color: #334155; font-size: 10pt; }

        .text-right { text-align: right !important; }
        .text-center { text-align: center !important; }
        .bold { font-weight: bold; }

        .payment-box {
            margin-top: 25px;
            border: 2px solid #2d4a6b;
            border-radius: 8px;
            padding: 15px;
            background: #f0f5f9;
        }
        .payment-box h3 { color: #2d4a6b; font-size: 11pt; margin-bottom: 10px; border-bottom: 1px solid #c8dcea; padding-bottom: 5px; }
        .payment-option { display: flex; justify-content: space-between; margin-bottom: 5px; font-size: 10.5pt; gap: 18px; }

        .total-row { background: #f0f5f9; }
        .total-label { font-size: 11pt; border: 1px solid #cbd5e1; }
        .total-value { font-size: 12pt; color: #2d4a6b; background: #f0f5f9; border: 1px solid #cbd5e1; }
        .discount-value { color: #10b981; }
        .proposal-validity {
            margin-top: 10px;
            font-size: 10pt;
            color: #334155;
            border-top: 1px solid #c8dcea;
            padding-top: 8px;
            font-weight: 700;
        }
        .pdf-footer {
            margin-top: 40px;
            text-align: center;
            font-size: 9pt;
            color: #94a3b8;
            page-break-inside: avoid;
        }

        .pdf-footer p {
            margin: 2px 0;
        }

        @media (max-width: 900px) {
            body { padding: 18px 12px 34px; }

            header {
                align-items: flex-start;
                flex-direction: column;
            }

            .brand img {
                width: 72px;
                height: 58px;
            }

            .card {
                padding: 18px;
                margin-bottom: 14px;
            }

            .item-row {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .item-row > div:first-child,
            .item-row > div:nth-child(5) {
                grid-column: span 2;
            }

            .btn-remove {
                grid-column: span 2;
                width: 100%;
            }

            .support-card {
                grid-template-columns: 1fr;
            }

            .logo-upload-panel {
                grid-template-columns: 1fr;
            }

            .logo-preview-box {
                width: 100%;
            }

            .generate-panel {
                align-items: stretch;
                flex-direction: column;
            }

            .generate-actions,
            .generate-actions button {
                width: 100%;
            }
        }
        @media (max-width: 640px) {
            .brand {
                align-items: flex-start;
            }

            .brand h1 { font-size: 1.15rem; }

            .grid {
                grid-template-columns: 1fr !important;
            }

            .grid > div {
                grid-column: auto !important;
            }

            .card-title {
                align-items: flex-start;
                flex-direction: column;
            }

            .card-title::before { display: none; }

            .card-title .btn-add,
            .btn-group button,
            .btn-group .btn-secondary {
                width: 100%;
            }

            .pix-row {
                grid-template-columns: 1fr;
            }

            .save-actions {
                grid-template-columns: 1fr;
            }

            .item-row {
                grid-template-columns: 1fr;
            }

            .item-row > div:first-child,
            .item-row > div:nth-child(5),
            .btn-remove {
                grid-column: auto;
            }

            .status-msg {
                left: 12px;
                right: 12px;
                top: 12px;
                max-width: none;
            }
        }