/* ===== Google Fonts ===== */
/* Fonts loaded via <link> in HTML for faster parsing (no @import waterfall) */

/* ===== CSS Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-color: #26395B;
    --primary-hover: #1a2a3f;
    --secondary-color: #6c757d;
    --accent-color: #5a9fb8;
    --success-color: #28a745;
    --error-color: #dc3545;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --bg-light: #f8f9fa;
    --white: #ffffff;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Libre Baskerville', Georgia, serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    --line-height-base: 1.5;

    /* Border Radius */
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

html {
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background-color: #F3F2EF;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
}

/* ===== Layout ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.view {
    display: none;
}

.view.active {
    display: block;
}

/* ===== Header ===== */
.site-header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xxl);
}

.header-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.site-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    flex-shrink: 0;
}

.header-text {
    flex: 1;
}

.site-header h1 {
    font-size: var(--font-size-xxl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.site-header .subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

/* ===== Footer ===== */
.site-footer {
    background-color: var(--white);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
    text-align: center;
    color: var(--text-secondary);
}

/* ===== Form Sections ===== */
.form-section {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.form-section h2 {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.section-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ===== Service Selection ===== */
.service-options {
    display: grid;
    gap: var(--spacing-lg);
}

.service-card {
    display: block;
    position: relative;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all 0.3s ease;
}

.service-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow-md);
}

.service-card input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.service-card input[type="radio"]:checked + .service-content {
    background-color: #f0f7fa;
}

.service-card input[type="radio"]:checked + .service-content::before {
    content: '✓';
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 18px;
}

.service-content {
    position: relative;
    transition: background-color 0.3s ease;
    padding: var(--spacing-md);
    padding-left: 68px;
    margin: calc(var(--spacing-md) * -1);
    border-radius: var(--border-radius-lg);
    min-height: 60px;
}

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.service-header h3 {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    flex: 1;
}

.service-header .price {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--primary-color);
}

.service-description {
    color: var(--text-primary);
    line-height: 1.6;
    display: none;
}

/* Show description when radio is checked */
.service-card input[type="radio"]:checked ~ .service-content .service-description {
    display: block;
    margin-top: var(--spacing-md);
}

/* ===== Form Elements ===== */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.phone-group {
    max-width: 50%;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.required {
    color: var(--error-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 95, 125, 0.1);
}

.form-group input.error {
    border-color: var(--error-color);
    background-color: #fff5f5;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.15);
}

.phone-input-group {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-sm);
}

/* ===== Date Input with Calendar ===== */
.date-input-wrapper {
    display: flex;
    position: relative;
}

.date-input-wrapper input[type="text"] {
    flex: 1;
    padding-right: 40px;
}

.date-picker-hidden {
    position: absolute;
    opacity: 0;
    width: 40px;
    height: 100%;
    right: 0;
    top: 0;
    cursor: pointer;
    padding: 0;
    border: none;
}

.calendar-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-secondary);
    pointer-events: none;
}

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

.calendar-btn svg {
    display: block;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    margin-right: var(--spacing-sm);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* ===== Payment Options ===== */
.payment-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.radio-label:hover {
    border-color: var(--accent-color);
    background-color: #f0f7fa;
}

.radio-label input[type="radio"] {
    margin-right: var(--spacing-sm);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.radio-label input[type="radio"]:checked + span {
    font-weight: 600;
    color: var(--primary-color);
}

/* ===== Honeypot (Anti-spam) ===== */
.honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* ===== Error Messages ===== */
.error-message {
    color: var(--error-color);
    font-size: var(--font-size-base);
    margin-top: var(--spacing-sm);
    display: none;
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: #fff5f5;
    border-left: 3px solid var(--error-color);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.error-message.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Error States ===== */
.form-group input.error,
.form-group select.error {
    border-color: var(--error-color);
    background-color: #fff5f5;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.15);
    animation: shake 0.4s ease-in-out;
}

.service-card.error-highlight,
.radio-label.error-highlight {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.15);
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

/* Validation banner near submit button */
.validation-banner {
    display: none;
    background-color: #fff5f5;
    border: 2px solid var(--error-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--error-color);
    font-weight: 600;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.validation-banner:hover {
    background-color: #ffe0e0;
}

.validation-banner.active {
    display: block;
    animation: shake 0.4s ease-in-out;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-family);
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
    background-color: var(--secondary-color);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--bg-light);
}

.form-actions {
    text-align: center;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

/* ===== Page Instructions ===== */
.page-instructions {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* ===== Invoice View ===== */
.invoice-actions {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.invoice-actions .container {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.invoice-container {
    display: flex;
    justify-content: center;
    padding-bottom: var(--spacing-xxl);
}

.invoice-page {
    background-color: var(--white);
    width: 100%;
    max-width: 210mm;
    min-height: 297mm;
    padding: 15mm 18mm;
    box-shadow: var(--shadow-lg);
}

/* ===== Invoice Header ===== */
.invoice-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--primary-color);
    margin-bottom: var(--spacing-xl);
}

.company-info h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.company-name {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.company-id {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.company-info address {
    font-style: normal;
    line-height: 1.6;
    color: var(--text-primary);
}

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

.invoice-meta h2 {
    font-size: var(--font-size-xxl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.invoice-meta p {
    margin-bottom: var(--spacing-xs);
}

/* ===== Bill To Section ===== */
.bill-to {
    margin-bottom: var(--spacing-xl);
}

.bill-to h3 {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.bill-to p {
    margin-bottom: var(--spacing-xs);
}

/* ===== Invoice Items ===== */
.invoice-items {
    margin-bottom: var(--spacing-xl);
}

.invoice-items table {
    width: 100%;
    border-collapse: collapse;
}

.invoice-items th,
.invoice-items td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.invoice-items thead th {
    background-color: var(--bg-light);
    font-weight: 600;
    color: var(--primary-color);
}

.invoice-items .text-right {
    text-align: right;
}

.invoice-items tfoot .total-row td {
    border-top: 2px solid var(--primary-color);
    border-bottom: none;
    font-size: var(--font-size-lg);
    padding-top: var(--spacing-md);
}

/* ===== Payment Terms Text ===== */
.payment-terms-text {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.tax-notice {
    font-style: italic;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-align: right;
    padding-top: var(--spacing-xs);
}

/* ===== Payment Section ===== */
.payment-section {
    padding-top: 0;
    margin-top: var(--spacing-md);
}

.payment-section h3 {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.payment-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.payment-method {
    text-align: center;
}

.payment-method h4 {
    font-size: var(--font-size-base);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    text-align: left;
}

.paynow-qr {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.paynow-qr img {
    max-width: 200px;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.payment-reference {
    text-align: center;
    font-size: var(--font-size-sm);
}

.payment-reference span {
    font-family: 'Courier New', monospace;
    font-weight: bold;
    color: var(--primary-color);
}

.bank-details {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.25rem var(--spacing-sm);
    font-size: var(--font-size-sm);
    line-height: 1.4;
    justify-content: center;
    text-align: left;
    max-width: 400px;
    margin: 0 auto;
}

.bank-details dt {
    font-weight: 600;
    color: var(--text-secondary);
}

.bank-details dd {
    margin: 0;
}

.payment-link {
    margin: var(--spacing-md) 0;
}

.payment-link a {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--accent-color);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.payment-link a:hover {
    background-color: #4a8ca0;
}

.surcharge-notice {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ===== Invoice Footer ===== */
.invoice-footer {
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
}

/* ===== Safe Mode Alert ===== */
.safe-mode-alert {
    background-color: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    color: #856404;
}

.safe-mode-alert p {
    margin-bottom: var(--spacing-xs);
}

.safe-mode-alert p:last-child {
    margin-bottom: 0;
}

.safe-mode-alert a {
    color: #856404;
    font-weight: 600;
}

/* ===== Help Section (Subdued) ===== */
.help-section-subdued {
    background-color: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
}

.help-section-subdued .help-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

.help-section-subdued .help-column h3 {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-family);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.help-section-subdued .help-column p {
    font-size: 0.75rem;
    line-height: 1.4;
    margin-bottom: 0.25rem;
    color: var(--text-secondary);
}

.help-section-subdued .help-column p:last-child {
    margin-bottom: 0;
}

.help-section-subdued .help-column a {
    color: var(--text-secondary);
    text-decoration: none;
}

.help-section-subdued .help-column a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* ===== Clarity Section ===== */
.clarity-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
}

.clarity-blocks {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.clarity-block {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.clarity-block h3 {
    color: var(--primary-color);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-heading);
}

.clarity-block p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.clarity-block ol {
    margin-left: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.8;
}

.clarity-block a {
    color: var(--accent-color);
    text-decoration: none;
}

.clarity-block a:hover {
    text-decoration: underline;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .site-logo {
        width: 60px;
        height: 60px;
    }

    .invoice-header {
        grid-template-columns: 1fr;
    }

    .invoice-meta {
        text-align: left;
    }

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

    .payment-row .discount-group {
        order: -1;
    }

    .phone-group {
        max-width: 100%;
    }

    .phone-input-group {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .phone-input-group select {
        width: 100%;
    }

    .phone-input-group input[type="tel"] {
        width: 100%;
    }

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

    .service-content {
        padding-left: 56px;
    }

    .service-card input[type="radio"]:checked + .service-content::before {
        width: 28px;
        height: 28px;
        font-size: 16px;
        left: var(--spacing-sm);
    }

    .invoice-page {
        padding: var(--spacing-lg);
    }

    .payment-methods {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .site-header h1 {
        font-size: var(--font-size-xl);
    }

    .invoice-meta h2 {
        font-size: var(--font-size-xl);
    }

    .invoice-actions .container {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

/* ===== Print Styles ===== */
@media print {
    @page {
        size: A4;
        margin: 0;
    }

    body {
        background-color: var(--white);
    }

    .no-print {
        display: none !important;
    }

    .invoice-container {
        padding: 0;
    }

    .invoice-page {
        box-shadow: none;
        max-width: 100%;
        width: 100%;
        padding: 15mm 18mm;
        min-height: auto;
    }

    .invoice-header {
        display: grid;
        grid-template-columns: 1fr 1fr;
        page-break-inside: avoid;
    }

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

    .bill-to,
    .invoice-items,
    .payment-terms,
    .payment-section {
        page-break-inside: avoid;
    }

    .paynow-qr img {
        max-width: 150px;
    }
}