:root {
    --primary-color: #3b505c;
    /* Sophisticated Blue-grey mimicking the logo */
    --primary-light: #527081;
    --secondary-color: #f5f7fa;
    /* Very light cool grey */
    --accent-color: #bfa15f;
    /* Elegant gold for premium feel */
    --accent-hover: #d2b474;
    --text-main: #2c3e50;
    --text-muted: #64748b;
    --bg-main: #ffffff;
    --bg-offset: #f8fafc;
    --border-color: #e2e8f0;
    --danger: #ef4444;
    --danger-hover: #fca5a5;
    --success: #10b981;

    --radius: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);

    /* Unified field geometry — every input type uses these */
    --field-height: 3.8rem;
    --field-padding-v: 0.95rem;
    --field-padding-h: 1.25rem;
    --field-font-size: 1.5rem;
    --field-border: 1.5px solid var(--border-color);
    --field-radius: var(--radius-sm);
    --field-bg: var(--bg-offset);
}

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

html,
body {
    overflow-x: hidden;
    width: 100%;
    -webkit-tap-highlight-color: transparent;
}

/* Remove tap highlight and system focus ring on all interactive elements */
button,
select,
input,
textarea,
a {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

body {
    font-family: 'Shippori Mincho', serif;
    /* Premium Japanese font */
    background-color: var(--secondary-color);
    color: var(--text-main);
    line-height: 1.6;
    font-size: 24px;
    /* Ultra-large base size */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header */
.app-header {
    background-color: var(--bg-main);
    padding: 1rem 2rem;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    z-index: 100;
}

.logo-container {
    padding: 0.5rem;
    background: white;
    border-radius: var(--radius-sm);
}

.logo {
    height: 48px;
    object-fit: contain;
}

.app-header h1 {
    font-size: 2.8rem;
    /* Even larger */
    color: var(--primary-color);
    font-weight: 800;
    letter-spacing: 0.05em;
    border-left: 5px solid var(--accent-color);
    padding-left: 1.5rem;
}

/* Container */
.app-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

/* Sections */
.form-section {
    background: var(--bg-main);
    border-radius: var(--radius);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.form-section:hover {
    box-shadow: var(--shadow-md);
}

.form-section h2 {
    font-size: 2.2rem;
    /* Even larger */
    color: var(--primary-color);
    margin-bottom: 2.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.form-section h2::before {
    content: '';
    display: block;
    width: 6px;
    height: 1.35rem;
    background-color: var(--primary-color);
    border-radius: 3px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
}

.section-header h2 {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.75rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.75rem;
}

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

/* Inputs */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-size: 1.5rem;
    /* Ultra-large labels */
    font-weight: 700;
    color: var(--text-main);
}

.required {
    color: var(--danger);
    margin-left: 0.25rem;
}



input[type="text"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    min-height: var(--field-height);
    height: auto;
    padding: var(--field-padding-v) var(--field-padding-h);
    border: var(--field-border);
    border-radius: var(--field-radius);
    font-family: inherit;
    font-size: var(--field-font-size);
    color: var(--text-main);
    background-color: var(--field-bg);
    transition: var(--transition);
    box-sizing: border-box;
    /* Remove any OS-level styling that can change geometry */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    /* Prevent tap flash on mobile */
    -webkit-tap-highlight-color: transparent;
}

textarea {
    height: auto;
    min-height: 7rem;
    resize: vertical;
}

/* Selects must not have a fixed height — let the browser size them naturally */
select {
    height: auto;
}

/* ---- Dropdowns: custom chevron arrow ---- */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.2rem;
    padding-right: 3rem;
    cursor: pointer;
}

/* ---- Date fields: hide native value, show YYYY/MM/DD overlay ---- */
input[type="date"].formatted-date {
    /* Inherits all geometry from the unified rule above */
    color: transparent !important;
    /* hides browser-rendered date string */
    position: relative;
    min-width: 0;
    max-width: 100%;
}

input[type="date"].formatted-date::before {
    content: attr(data-date);
    position: absolute;
    left: var(--field-padding-h);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-main);
    font-family: inherit;
    font-size: var(--field-font-size);
    pointer-events: none;
    white-space: nowrap;
}

input[type="date"].formatted-date::-webkit-calendar-picker-indicator {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* Date input wrapper — prevents box from overflowing */
.date-input-wrapper {
    position: relative;
    width: 100%;
    overflow: hidden;
}

input:hover,
select:hover,
textarea:hover {
    border-color: #cbd5e1;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(82, 112, 129, 0.15);
    background-color: var(--bg-main);
}

/* Buttons */
.btn {
    padding: 1.5rem 3rem;
    /* Extra large buttons */
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1.8rem;
    /* Bold, clear text */
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    letter-spacing: 0.05em;
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

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

.btn-danger {
    background-color: transparent;
    color: var(--danger);
    padding: 0.5rem;
    font-size: 1.25rem;
    border-radius: var(--radius-sm);
}

.btn-danger:hover {
    background-color: #fef2f2;
    color: var(--danger-hover);
}

.btn-submit {
    background-color: var(--accent-color);
    color: white;
    width: 100%;
    font-size: 1.25rem;
    padding: 1.25rem;
    margin-top: 1rem;
    box-shadow: var(--shadow-md);
}

.btn-submit:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Items Table */
.items-table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    /* Smooth scrolling on iOS */
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-main);
}

.items-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 1050px;
}

.items-table th {
    background-color: #f8fafc;
    color: var(--text-main);
    font-weight: 600;
    text-align: left;
    padding: 1rem 1.25rem;
    font-size: 1.1rem;
    /* Increased for readability */
    border-bottom: 2px solid var(--border-color);
}

.items-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

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

.items-table input,
.items-table select {
    padding: 1rem;
    padding-right: 2.5rem;
    /* space for custom chevron arrow */
    margin: 0;
    width: 100%;
    min-width: 200px;
    font-size: 1.5rem;
}

.col-price {
    width: 140px;
}

.col-qty {
    width: 100px;
}

.col-total {
    width: 150px;
}

.price-text {
    font-weight: 700;
    text-align: right;
    display: block;
    color: var(--primary-color);
    font-size: 1.5rem;
    /* Increased from 1.1rem */
    letter-spacing: 0.05em;
}

.deposit-section h3 {
    font-size: 1.3rem;
    /* Increased */
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Financial Summary */
.financial-summary {
    background-color: var(--primary-color);
    color: white;
    border-color: transparent;
    padding: 2.5rem;
}

.summary-wrapper {
    max-width: 500px;
    margin-left: auto;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    font-size: 1.3rem;
    /* Increased */
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.summary-row:last-child {
    border-bottom: none;
}

.discount-input {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.discount-input input {
    background: rgba(255, 255, 255, 0.1);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    color: white;
    width: 160px;
    text-align: right;
    font-size: 1.25rem;
    /* Increased */
}

.discount-input input:focus {
    background: rgba(255, 255, 255, 0.2);
    border-color: white;
    box-shadow: none;
}

/* Remove arrows from number input */
.discount-input input::-webkit-outer-spin-button,
.discount-input input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.grand-total {
    font-size: 2.2rem;
    /* Substantially increased */
    font-weight: 700;
    color: var(--accent-color);
    margin-top: 1rem;
    padding-top: 1.5rem;
    border-top: 2px solid rgba(255, 255, 255, 0.3);
}

.balance-row {
    font-size: 1.6rem;
    /* Increased */
    font-weight: 600;
    color: #cbd5e1;
}

/* Success Message Overlay */
#successMessage {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    text-align: center;
}

#successMessage.hidden {
    display: none;
}

.success-content {
    background: white;
    padding: 4rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.checkmark {
    font-size: 4rem;
    color: var(--success);
    margin-bottom: 1rem;
}

.success-content h3 {
    font-size: 1.75rem;
    /* Increased */
    color: var(--primary-color);
    margin-bottom: 2rem;
}

/* === PAYMENT TIMING ROW === */
.payment-timing-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: stretch;
    max-width: 100%;
    overflow: hidden;
}

.payment-times-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
    /* allows shrinking below content size */
    max-width: 100%;
}

.payment-times-input {
    width: 90px !important;
    max-width: 100%;
    /* never grow past the container */
    min-width: 0;
}

.payment-times-unit {
    font-size: var(--field-font-size);
    color: var(--text-main);
    white-space: nowrap;
    line-height: var(--field-height);
}

.payment-timing-select {
    width: auto !important;
    min-width: 0;
    /* can shrink on mobile */
}

.payment-note-input {
    flex: 1;
    min-width: 0;
    /* can shrink below 150px on very narrow screens */
}

/* Responsive */
@media (max-width: 768px) {

    body {
        font-size: 1.4rem;
        /* Massive mobile font */
    }

    .app-header {
        padding: 1rem;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .app-header h1 {
        border-left: none;
        border-top: 2px solid var(--accent-color);
        padding-left: 0;
        padding-top: 0.5rem;
    }

    .form-section {
        padding: 1.25rem;
        /* Reduce padding slightly to maximize screen space */
        margin-bottom: 1.5rem;
    }

    .form-section h2 {
        font-size: 1.25rem;
        margin-bottom: 1.5rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .items-table-container {
        margin: 0 -1.5rem 1.5rem;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .summary-wrapper {
        margin-left: 0;
        max-width: 100%;
    }

    .summary-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
        font-size: 1.2rem;
        /* Larger font for legibility */
    }

    .discount-input {
        width: 100%;
        justify-content: space-between;
    }

    .discount-input input {
        flex: 1;
        margin-left: 1rem;
        padding: 0.85rem;
        /* Larger touch target */
    }

    #grandTotalDisplay,
    #balanceDisplay {
        align-self: flex-end;
    }

    /* Grids to stack properly on very small screens */
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    /* Buttons larger for touch */
    .btn {
        padding: 1.25rem 2rem;
        font-size: 1.3rem;
    }

    /* Adjust inline items grouping for payments */
    div[style*="align-items: center"][style*="flex-wrap: wrap"] {
        flex-direction: column;
        align-items: stretch !important;
    }

    #paymentTimes,
    #paymentTiming,
    #paymentNote {
        width: 100% !important;
        margin-bottom: 0.5rem;
    }
}

/* === CAMPAIGN TOGGLE === */
.campaign-toggle-wrapper {
    display: flex;
    align-items: center;
}

.switch-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.campaign-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-color);
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #cbd5e1;
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}

input:checked+.slider {
    background-color: var(--accent-color);
}

input:focus+.slider {
    box-shadow: 0 0 1px var(--accent-color);
}

input:checked+.slider:before {
    transform: translateX(24px);
}

.slider.round {
    border-radius: 26px;
}

.slider.round:before {
    border-radius: 50%;
}

/* === ADD ITEM BUTTON (below table) === */
.btn-add-inline {
    width: 100%;
    padding: 1rem;
    margin-top: 0.75rem;
    background-color: #f8fafc;
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius-sm);
    color: var(--primary-light);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-add-inline:hover {
    background-color: #f1f5f9;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* === SIGNATURE PADS === */
.signature-section {
    margin-bottom: 2rem;
}

.signature-box {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.signature-pad {
    width: 100%;
    max-width: 100%;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-main);
    touch-action: none;
    cursor: crosshair;
}

.signature-actions {
    display: flex;
    justify-content: flex-end;
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-secondary:hover {
    background-color: var(--bg-offset);
    color: var(--text-main);
}