:root {
    --background: #f4f7fb;
    --surface: #ffffff;
    --surface-soft: #f9fbff;
    --text: #162033;
    --muted: #64748b;
    --line: #dce4ef;
    --accent: #1d4ed8;
    --accent-dark: #1e40af;
    --accent-soft: #e8f0ff;
    --success: #177a44;
    --danger: #b42318;
    --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --container: 1200px;
    --font: Arial, Helvetica, sans-serif;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: var(--background);
    color: var(--text);
    font-family: var(--font);
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

img {
    max-width: 100%;
}

.container {
    width: min(var(--container), calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(220, 228, 239, 0.9);
}

.topbar {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--muted);
    padding: 10px 14px;
    border-radius: 999px;
    font-weight: 700;
    transition: all 0.18s ease;
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--text);
    background: #edf3ff;
}

.page-shell {
    padding: 46px 0 60px;
}

.hero-card,
.section-card,
.tool-card {
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    padding: 36px;
}

.section-card + .section-card,
.hero-card + .section-card,
.tool-card + .section-card {
    margin-top: 24px;
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    color: var(--accent);
    font-weight: 800;
    font-size: 0.84rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

h1,
h2,
h3,
p {
    margin: 0;
}

h1 {
    font-size: clamp(2rem, 4vw, 3.3rem);
    line-height: 1.05;
    max-width: 900px;
}

h2 {
    font-size: 1.25rem;
}

h3 {
    font-size: 1.02rem;
}

.lead {
    margin-top: 18px;
    max-width: 820px;
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.75;
}

.hero-actions,
.action-row,
.section-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.hero-actions {
    margin-top: 26px;
}

.primary-button,
.secondary-button,
.ghost-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 18px;
    border-radius: 999px;
    border: none;
    font-weight: 800;
    transition: transform 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover {
    transform: translateY(-1px);
}

.primary-button {
    background: var(--accent);
    color: #fff;
}

.primary-button:hover {
    background: var(--accent-dark);
}

.secondary-button {
    background: #edf3ff;
    color: var(--text);
}

.secondary-button:hover {
    background: #e5eeff;
}

.ghost-button {
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--line);
}

.ghost-button:hover {
    background: #f8fbff;
}

.primary-button[disabled],
.secondary-button[disabled],
.ghost-button[disabled] {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.stats-grid,
.steps-grid,
.contact-grid,
.summary-grid {
    display: grid;
    gap: 18px;
}

.stats-grid,
.steps-grid,
.contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 30px;
}

.stat-card,
.step-card,
.info-card,
.summary-card {
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 22px;
}

.stat-card strong,
.summary-card strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 6px;
}

.stat-card span,
.step-card p,
.info-card p,
.section-heading p,
.summary-card span {
    color: var(--muted);
    line-height: 1.7;
}

.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}

.step-number {
    display: inline-flex;
    margin-bottom: 16px;
    color: var(--accent);
    font-weight: 900;
    font-size: 1.4rem;
}

.cta-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.quote-builder-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 24px;
    margin-top: 34px;
}

.builder-panel,
.preview-panel {
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.form-section + .form-section {
    margin-top: 26px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.field-grid {
    display: grid;
    gap: 16px;
}

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

.field-grid.three-columns {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.field-group label {
    font-size: 0.95rem;
    font-weight: 700;
}

.field-group input,
.field-group textarea,
.field-group select {
    width: 100%;
    border: 1px solid #d4dceb;
    background: #fff;
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    color: var(--text);
    outline: none;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.field-group input:focus,
.field-group textarea:focus,
.field-group select:focus {
    border-color: rgba(29, 78, 216, 0.45);
    box-shadow: 0 0 0 4px rgba(29, 78, 216, 0.08);
}

.field-group textarea {
    resize: vertical;
    min-height: 110px;
}

.full-width {
    grid-column: 1 / -1;
}

.line-items-head,
.line-item-row {
    display: grid;
    grid-template-columns: 2.2fr 0.7fr 1fr 1fr auto;
    gap: 12px;
    align-items: center;
}

.line-items-head {
    margin: 18px 0 12px;
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 800;
}

.line-items-list {
    display: grid;
    gap: 12px;
}

.line-item-row {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 12px;
}

.line-item-total {
    font-weight: 800;
}

.icon-button {
    min-height: 44px;
    min-width: 44px;
    border: none;
    border-radius: 12px;
    background: #fef2f2;
    color: var(--danger);
    font-weight: 900;
}

.summary-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 20px;
}

.summary-card strong {
    margin: 10px 0 0;
}

.action-row-spaced {
    justify-content: flex-start;
    margin-top: 26px;
}

.helper-message {
    min-height: 24px;
    margin: 14px 0 0;
    font-size: 0.95rem;
    font-weight: 700;
}

.helper-message.is-success {
    color: var(--success);
}

.helper-message.is-error {
    color: var(--danger);
}

.helper-message.is-info {
    color: var(--muted);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 18px;
}

.preview-badge {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 800;
    font-size: 0.85rem;
}

.quote-preview {
    min-height: 420px;
    background: #fff;
    border: 1px dashed #d7e0ee;
    border-radius: var(--radius-md);
    padding: 20px;
    overflow: auto;
}

.empty-preview {
    display: flex;
    align-items: center;
    justify-content: center;
}

.empty-state {
    color: var(--muted);
    line-height: 1.7;
    text-align: center;
}

.quote-sheet {
    background: #fff;
    color: #111827;
}

.quote-sheet-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 18px;
    margin-bottom: 22px;
}

.quote-logo {
    max-height: 64px;
    display: block;
    margin-bottom: 10px;
}

.quote-sheet-title {
    text-align: right;
}

.quote-sheet-title .title-badge {
    display: inline-flex;
    padding: 6px 12px;
    border-radius: 999px;
    background: #eef4ff;
    color: var(--accent);
    font-weight: 800;
    margin-bottom: 10px;
}

.quote-meta,
.quote-addresses {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 20px;
}

.quote-box {
    background: #f8fbff;
    border: 1px solid #dce4ef;
    border-radius: 16px;
    padding: 16px;
}

.quote-box h3 {
    margin-bottom: 10px;
}

.quote-box p {
    line-height: 1.7;
    color: #334155;
}

.quote-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.quote-table th,
.quote-table td {
    padding: 12px 10px;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
    font-size: 0.94rem;
}

.quote-table th:last-child,
.quote-table td.num {
    text-align: right;
}

.quote-totals {
    margin-left: auto;
    width: min(360px, 100%);
    display: grid;
    gap: 10px;
}

.quote-total-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid #e5e7eb;
}

.quote-total-row.is-final {
    font-size: 1.12rem;
    font-weight: 900;
    color: var(--accent);
    border-bottom: none;
    padding-top: 14px;
}

.quote-note-box {
    margin-top: 24px;
    border-top: 1px solid #e5e7eb;
    padding-top: 18px;
    color: #475569;
}

.site-footer {
    padding: 0 0 40px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    color: var(--muted);
    font-size: 0.95rem;
}

@media (max-width: 980px) {
    .quote-builder-grid,
    .stats-grid,
    .steps-grid,
    .contact-grid,
    .summary-grid,
    .quote-meta,
    .quote-addresses,
    .field-grid.two-columns,
    .field-grid.three-columns {
        grid-template-columns: 1fr;
    }

    .line-items-head {
        display: none;
    }

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

    .quote-sheet-header {
        flex-direction: column;
    }

    .quote-sheet-title {
        text-align: left;
    }

    .topbar {
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        padding: 14px 0;
    }
}

@media (max-width: 640px) {
    .hero-card,
    .section-card,
    .tool-card,
    .builder-panel,
    .preview-panel,
    .stat-card,
    .step-card,
    .info-card,
    .summary-card {
        padding: 20px;
    }

    .page-shell {
        padding-top: 24px;
    }

    .brand {
        font-size: 1.15rem;
    }

    .hero-actions,
    .action-row,
    .section-row,
    .cta-card {
        flex-direction: column;
        align-items: stretch;
    }
}