/* ================================
   RETRO RECEIPT AESTHETIC
   ================================ */

:root {
    /* Colors - Receipt Paper Theme */
    --paper-cream: #F5F1E8;
    --ink-black: #1A1A1A;
    --register-green: #00A86B;
    --receipt-blue: #4169E1;
    --stamp-red: #D32F2F;
    --stamp-green: #2E7D32;
    --subtle-gray: #4A4A4A; /* Darkened for better readability */

    /* Typography */
    --font-receipt: 'Courier Prime', 'Courier New', monospace;
    --font-display: 'VT323', monospace;

    /* Spacing - Reduced for mobile */
    --spacing-xs: 0.375rem;
    --spacing-sm: 0.625rem;
    --spacing-md: 0.875rem;
    --spacing-lg: 1.125rem;

    /* Touch Targets */
    --touch-min: 44px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-receipt);
    background: linear-gradient(180deg, #E8E4DC 0%, var(--paper-cream) 100%);
    color: var(--ink-black);
    height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden; /* Prevent scrolling */
}

/* Paper Texture Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.01) 2px,
            rgba(0, 0, 0, 0.01) 4px
        );
    pointer-events: none;
    z-index: 1;
}

/* Ensure content is above texture */
header, main, footer, .modal-overlay {
    position: relative;
    z-index: 2;
}

/* ================================
   PERFORATION LINES
   ================================ */

.perforation {
    height: 12px;
    background-image: repeating-linear-gradient(
        90deg,
        var(--subtle-gray) 0px,
        var(--subtle-gray) 4px,
        transparent 4px,
        transparent 8px
    );
    background-position: center;
    background-size: 8px 1px;
    background-repeat: repeat-x;
    margin: var(--spacing-sm) 0;
    opacity: 0.4;
}

.separator-line {
    height: 1px;
    background: repeating-linear-gradient(
        90deg,
        var(--ink-black) 0px,
        var(--ink-black) 3px,
        transparent 3px,
        transparent 6px
    );
    margin: var(--spacing-sm) 0;
    opacity: 0.3;
}

/* ================================
   FLOATING HEADER ELEMENTS
   ================================ */

/* Hamburger Menu Button */
.menu-btn {
    position: fixed;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--ink-black);
    padding: var(--spacing-xs);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 40px;
    height: 40px;
    justify-content: center;
    align-items: center;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 100;
    transition: all 0.2s ease;
    touch-action: manipulation; /* Prevent double-tap zoom */
}

.menu-btn span {
    display: block;
    width: 24px;
    height: 3px;
    background: var(--ink-black);
    border-radius: 2px;
    transition: all 0.2s ease;
}

.menu-btn:active {
    background: var(--register-green);
}

.menu-btn:active span {
    background: white;
}

/* Streak Badge */
.streak-badge {
    position: fixed;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--register-green);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--ink-black);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 100;
    min-width: 60px;
    text-align: center;
}

/* Stats displayed in menu */
.stat-label {
    font-size: 0.625rem;
    letter-spacing: 1px;
    color: var(--subtle-gray);
    text-transform: uppercase;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--ink-black);
}

.streak-display {
    color: var(--register-green);
}

/* ================================
   MAIN CONTENT
   ================================ */

.receipt-body {
    flex: 1;
    min-height: 0; /* Critical: allows flex item to shrink and scroll properly */
    padding: var(--spacing-sm);
    padding-top: 12px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: var(--spacing-sm);
    overflow-y: auto;
    overflow-x: hidden;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

.receipt-body > * {
    flex-shrink: 0;
}

/* ================================
   MODE SWITCHER (Perforation Toggle)
   ================================ */

.receipt-mode-switcher {
    position: relative;
    user-select: none;
}

.perforation-line {
    position: relative;
    height: 2px;
    background-image: repeating-linear-gradient(
        to right,
        var(--ink-black) 0px,
        var(--ink-black) 4px,
        transparent 4px,
        transparent 8px
    );
    margin: 0.25rem 0;
}

.mode-labels {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    background: rgba(255, 255, 255, 0.5);
    border: 1px dashed var(--ink-black);
    border-radius: 4px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    touch-action: manipulation;
}

.mode-labels:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-1px);
}

.mode-labels:active {
    transform: translateY(0);
}

.mode-option {
    flex: 1;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.mode-option.inactive {
    opacity: 0.35;
    transform: scale(0.95);
}

.mode-option.active {
    opacity: 1;
    transform: scale(1);
}

.mode-number {
    display: block;
    font-size: 0.625rem;
    letter-spacing: 1px;
    color: var(--subtle-gray);
    margin-bottom: 0.125rem;
}

.mode-name {
    display: block;
    font-size: 1rem;
    font-weight: bold;
    letter-spacing: 0.5px;
    color: var(--ink-black);
}

.mode-option.active .mode-name {
    color: var(--register-green);
}

.active-indicator {
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: var(--register-green);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mode-option.active .active-indicator {
    opacity: 1;
}

.mode-divider {
    width: 1px;
    height: 40px;
    background: var(--ink-black);
    opacity: 0.2;
}

/* Transaction Display */
.transaction-section {
    background: rgba(255, 255, 255, 0.5);
    padding: var(--spacing-md);
    border: 1px dashed var(--ink-black);
    border-radius: 4px;
}

.transaction-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

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

.tx-label {
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    color: var(--subtle-gray);
    font-weight: bold;
}

.tx-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--ink-black);
}

.change-row .tx-value {
    color: var(--register-green);
    font-size: 1.5rem;
    user-select: none;
    transition: all 0.2s ease;
    padding: 2px 4px;
    border-radius: 3px;
    /* cursor set dynamically by JS based on mode */
}

.change-row .tx-value:active {
    background: rgba(0, 0, 0, 0.05);
}

.change-row .tx-value.hidden {
    filter: blur(8px);
    color: var(--subtle-gray);
}

/* Input Display */
.input-display {
    background: rgba(0, 0, 0, 0.05);
    padding: var(--spacing-sm);
    border-radius: 4px;
    border: 2px solid var(--ink-black);
}

.input-label {
    font-size: 0.75rem;
    letter-spacing: 1px;
    color: var(--subtle-gray);
    margin-bottom: 4px;
    font-weight: bold;
}

.input-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: bold;
    color: var(--ink-black);
    text-align: right;
    min-height: 2.5rem;
    line-height: 1;
}

/* Number Pad */
.numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.num-btn {
    font-family: var(--font-display);
    font-size: 2rem;
    background: var(--ink-black);
    color: var(--paper-cream);
    border: none;
    border-radius: 6px;
    min-height: 56px;
    padding: var(--spacing-sm);
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.3);
    position: relative;
    top: 0;
    touch-action: manipulation; /* Prevent double-tap zoom */
}

.num-btn:active {
    top: 4px;
    box-shadow: 0 0 0 rgba(0, 0, 0, 0.3);
    background: #000;
}

.clear-btn {
    background: var(--stamp-red);
    color: white;
}

.clear-btn:active {
    background: #B71C1C;
}

/* ================================
   HOLDING AREA (MODE 2)
   ================================ */

.holding-area {
    background: rgba(255, 255, 255, 0.5);
    border: 2px solid var(--ink-black);
    border-radius: 4px;
    padding: var(--spacing-sm);
    min-height: 70px;

    /* Safety net: if anything ever does overflow, don't paint over the next panel */
    overflow: hidden;
}

.holding-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.holding-label {
    font-size: 0.75rem;
    letter-spacing: 1px;
    color: var(--subtle-gray);
    font-weight: bold;
}

.clear-holding-btn {
    font-family: var(--font-receipt);
    font-size: 0.625rem;
    font-weight: bold;
    background: var(--stamp-red);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    touch-action: manipulation; /* Prevent double-tap zoom */
}

.clear-holding-btn:active {
    background: #B71C1C;
}

.holding-content {
    min-height: 35px;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: flex-start;
    margin-bottom: var(--spacing-xs);
}

.empty-state {
    width: 100%;
    text-align: center;
    padding: var(--spacing-md);
    color: var(--subtle-gray);
    font-size: 0.875rem;
    font-style: italic;
}

.holding-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm); /* was md - slightly tighter */
    margin-top: var(--spacing-sm);
    border-top: 1px dashed var(--ink-black);
    min-height: 40px;
}

.holding-total-label {
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    color: var(--subtle-gray);
    font-weight: bold;
    text-transform: uppercase;
}

.holding-total-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--register-green);
    cursor: pointer;
    user-select: none;
    transition: all 0.2s ease;

    /* KEY FIX: remove bottom-heavy padding that makes it sit low */
    padding: 2px 6px; /* was 2px 4px 8px 4px */

    border-radius: 3px;
    line-height: 1;
}

.holding-total-value:active {
    background: rgba(0, 0, 0, 0.05);
}

.holding-total-value.hidden {
    filter: blur(8px);
    color: var(--subtle-gray);
}

/* Held currency items */
.held-bill,
.held-coin {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: bold;
    padding: 4px 8px;
    border-radius: 3px;
    border: 1px solid rgba(0, 0, 0, 0.2);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.held-bill {
    background: linear-gradient(135deg, #C8D5B9 0%, #A8B89D 100%);
}

.held-bill[data-value="5.00"] {
    background: linear-gradient(135deg, #D4C5E2 0%, #B8A5C9 100%);
}

.held-bill[data-value="10.00"] {
    background: linear-gradient(135deg, #F4D58D 0%, #E0BC6D 100%);
}

.held-bill[data-value="20.00"] {
    background: linear-gradient(135deg, #C8E6C9 0%, #A5D6A7 100%);
}

.held-bill[data-value="50.00"] {
    background: linear-gradient(135deg, #FFB3BA 0%, #FF8A91 100%);
}

.held-coin {
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.held-coin[data-value="0.25"] {
    background: radial-gradient(circle at 30% 30%, #E8E8E8, #B8B8B8);
    width: 34px;
    height: 34px;
}

.held-coin[data-value="0.10"] {
    background: radial-gradient(circle at 30% 30%, #E0E0E0, #B0B0B0);
    width: 28px;
    height: 28px;
    font-size: 0.625rem;
}

.held-coin[data-value="0.05"] {
    background: radial-gradient(circle at 30% 30%, #D8D8D8, #A8A8A8);
    width: 32px;
    height: 32px;
}

.held-coin[data-value="0.01"] {
    background: radial-gradient(circle at 30% 30%, #D4A574, #B8956C);
    width: 30px;
    height: 30px;
    font-size: 0.625rem;
}

/* ================================
   VIRTUAL TILL (MODE 2)
   ================================ */

.virtual-till {
    background: rgba(0, 0, 0, 0.05);
    border: 2px solid var(--ink-black);
    border-radius: 6px;
    padding: var(--spacing-sm);
}

.till-label {
    font-size: 0.75rem;
    letter-spacing: 1px;
    color: var(--subtle-gray);
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.till-section {
    margin-bottom: var(--spacing-sm);
}

.till-section:last-child {
    margin-bottom: 0;
}

.till-section-label {
    font-size: 0.625rem;
    letter-spacing: 1px;
    color: var(--subtle-gray);
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

.bills-row {
    display: flex;
    gap: var(--spacing-xs);
    justify-content: space-between;
}

.bill-btn {
    flex: 1;
    font-family: var(--font-display);
    background: linear-gradient(135deg, #C8D5B9 0%, #A8B89D 100%);
    border: 2px solid rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    padding: var(--spacing-xs);
    min-height: 48px;
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
    position: relative;
    touch-action: manipulation; /* Prevent double-tap zoom */
}

.bill-btn:active {
    transform: scale(0.95);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.bill-1 {
    background: linear-gradient(135deg, #C8D5B9 0%, #A8B89D 100%);
}

.bill-5 {
    background: linear-gradient(135deg, #D4C5E2 0%, #B8A5C9 100%);
}

.bill-10 {
    background: linear-gradient(135deg, #F4D58D 0%, #E0BC6D 100%);
}

.bill-20 {
    background: linear-gradient(135deg, #C8E6C9 0%, #A5D6A7 100%);
}

.bill-50 {
    background: linear-gradient(135deg, #FFB3BA 0%, #FF8A91 100%);
}

.coins-row {
    display: flex;
    gap: var(--spacing-xs);
    justify-content: space-around;
}

.coin-btn {
    font-family: var(--font-display);
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: 3px solid rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.2),
        inset 0 1px 2px rgba(255, 255, 255, 0.5);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    touch-action: manipulation; /* Prevent double-tap zoom */
}

.coin-btn:active {
    transform: scale(0.9);
    box-shadow:
        0 1px 2px rgba(0, 0, 0, 0.2),
        inset 0 1px 2px rgba(255, 255, 255, 0.5);
}

.coin-quarter {
    background: radial-gradient(circle at 30% 30%, #E8E8E8, #B8B8B8);
    width: 56px;
    height: 56px;
}

.coin-dime {
    background: radial-gradient(circle at 30% 30%, #E0E0E0, #B0B0B0);
    width: 48px;
    height: 48px;
}

.coin-nickel {
    background: radial-gradient(circle at 30% 30%, #D8D8D8, #A8A8A8);
    width: 52px;
    height: 52px;
}

.coin-penny {
    background: radial-gradient(circle at 30% 30%, #D4A574, #B8956C);
    width: 50px;
    height: 50px;
}

.denom-value {
    font-weight: bold;
    color: var(--ink-black);
    text-shadow: 0 1px 1px rgba(255, 255, 255, 0.5);
}

.bill-btn .denom-value {
    font-size: 1rem;
}

.coin-btn .denom-value {
    font-size: 0.75rem;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-xs);
}

.submit-btn {
    font-family: var(--font-receipt);
    font-size: 1rem;
    font-weight: bold;
    background: var(--register-green);
    color: white;
    border: none;
    border-radius: 4px;
    padding: var(--spacing-sm);
    min-height: var(--touch-min);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all 0.2s ease;
    box-shadow: 0 3px 8px rgba(0, 168, 107, 0.3);
    position: relative;
    top: 0;
    flex: 3; /* Take 3/4 of width */
    touch-action: manipulation; /* Prevent double-tap zoom */
}

.submit-btn:active {
    top: 2px;
    box-shadow: 0 1px 4px rgba(0, 168, 107, 0.3);
}

.btn-icon {
    font-size: 1.25rem;
    font-weight: bold;
}

.new-problem-btn {
    font-family: var(--font-receipt);
    font-size: 0.875rem;
    font-weight: bold;
    background: rgba(0, 0, 0, 0.05);
    color: var(--ink-black);
    border: 1px solid var(--ink-black);
    border-radius: 4px;
    padding: var(--spacing-xs);
    min-height: var(--touch-min);
    cursor: pointer;
    transition: all 0.2s ease;
    flex: 1; /* Take 1/4 of width */
    touch-action: manipulation; /* Prevent double-tap zoom */
}

.new-problem-btn:active {
    background: var(--ink-black);
    color: var(--paper-cream);
}

/* ================================
   MODAL - FEEDBACK
   ================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-md);
    animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--paper-cream);
    padding: var(--spacing-lg);
    border-radius: 8px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    border: 3px solid var(--ink-black);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    animation: stampSlam 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
}

@keyframes stampSlam {
    0% {
        transform: scale(0.5) rotate(-5deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.05) rotate(2deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.stamp {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    display: inline-block;
    border: 4px solid;
    border-radius: 8px;
    transform: rotate(-5deg);
    letter-spacing: 4px;
}

.stamp.correct {
    color: var(--stamp-green);
    border-color: var(--stamp-green);
    animation: stampRotate 0.5s ease;
}

.stamp.incorrect {
    color: var(--stamp-red);
    border-color: var(--stamp-red);
    animation: stampShake 0.5s ease;
}

@keyframes stampRotate {
    0%, 100% { transform: rotate(-5deg); }
    50% { transform: rotate(5deg); }
}

@keyframes stampShake {
    0%, 100% { transform: rotate(-5deg) translateX(0); }
    25% { transform: rotate(-5deg) translateX(-10px); }
    75% { transform: rotate(-5deg) translateX(10px); }
}

.modal-message {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.modal-xp {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--register-green);
    margin-bottom: var(--spacing-lg);
}

.modal-close {
    font-family: var(--font-receipt);
    font-size: 1rem;
    font-weight: bold;
    background: var(--ink-black);
    color: var(--paper-cream);
    border: none;
    border-radius: 6px;
    padding: var(--spacing-md) var(--spacing-lg);
    min-height: var(--touch-min);
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.modal-close:active {
    background: #000;
}

/* ================================
   STATS MENU MODAL
   ================================ */

.stats-menu {
    text-align: left;
}

.stats-menu h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    text-align: center;
    letter-spacing: 2px;
    margin: 0;
    padding: var(--spacing-xs) 0;
}

.stats-menu .perforation {
    margin: var(--spacing-xs) 0;
}

.stats-section {
    margin-bottom: var(--spacing-md);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px dotted rgba(0, 0, 0, 0.2);
}

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

.stat-row .stat-label {
    color: var(--subtle-gray);
}

.mode-selector {
    margin-bottom: var(--spacing-md);
}

.mode-selector .stat-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--subtle-gray);
}

.mode-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.mode-btn {
    flex: 1;
    font-family: var(--font-receipt);
    font-size: 0.75rem;
    font-weight: bold;
    background: rgba(0, 0, 0, 0.05);
    color: var(--ink-black);
    border: 1px solid var(--ink-black);
    border-radius: 4px;
    padding: var(--spacing-xs);
    min-height: 40px;
    cursor: pointer;
    transition: all 0.2s ease;
    touch-action: manipulation; /* Prevent double-tap zoom */
}

.mode-btn.active {
    background: var(--register-green);
    color: white;
    border-color: var(--register-green);
}

.mode-btn:active {
    transform: scale(0.95);
}

.mode-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Toggle Switch */
.toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

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

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.3s;
    border-radius: 24px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--register-green);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(26px);
}

.account-section {
    text-align: center;
    padding: var(--spacing-md) 0;
}

.account-section p {
    font-size: 0.875rem;
    color: var(--subtle-gray);
    margin-bottom: var(--spacing-sm);
}

.account-link {
    display: inline-block;
    color: var(--receipt-blue);
    text-decoration: none;
    font-weight: bold;
    font-size: 0.875rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--receipt-blue);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.account-link:active {
    background: var(--receipt-blue);
    color: white;
}

/* ================================
   RESPONSIVE ADJUSTMENTS
   ================================ */

@media (max-width: 360px) {
    .receipt-body {
        padding: var(--spacing-sm);
        padding-top: 12px;
    }

    .tx-value {
        font-size: 1.5rem;
    }

    .change-row .tx-value {
        font-size: 1.75rem;
    }

    .input-value {
        font-size: 2rem;
    }

    .num-btn {
        font-size: 1.75rem;
        min-height: 50px;
    }

    .submit-btn {
        font-size: 0.875rem;
    }
}

/* ================================
   ANIMATIONS & TRANSITIONS
   ================================ */

.slide-in {
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.pulse {
    animation: pulse 0.4s ease;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ================================
   AUTH MODAL STYLES
   ================================ */

.form-row {
    margin-bottom: var(--spacing-md);
}

.form-row label {
    display: block;
    font-size: 0.75rem;
    color: var(--subtle-gray);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: bold;
}

.form-row input {
    width: 100%;
    padding: var(--spacing-sm);
    font-family: var(--font-mono);
    font-size: 1rem;
    border: 2px solid var(--dark-gray);
    background: var(--off-white);
    color: var(--text-dark);
    box-sizing: border-box;
}

.form-row input:focus {
    outline: none;
    border-color: var(--register-green);
}

.error-message {
    color: var(--error-red);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-xs);
    background: rgba(255, 0, 0, 0.05);
    border: 1px solid var(--error-red);
    font-family: var(--font-mono);
}

.auth-toggle {
    text-align: center;
    font-size: 0.875rem;
    color: var(--subtle-gray);
    margin-top: var(--spacing-md);
}

.auth-toggle a {
    color: var(--register-green);
    text-decoration: underline;
    cursor: pointer;
    font-weight: bold;
}

.auth-toggle a:hover {
    color: var(--ink-black);
}

.modal-close.secondary {
    background: transparent;
    color: var(--subtle-gray);
    border: 2px solid var(--subtle-gray);
}

.modal-close.secondary:active {
    background: var(--subtle-gray);
    color: var(--off-white);
}

/* Account section updates */
.account-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.account-separator {
    color: var(--subtle-gray);
    font-size: 0.875rem;
}

/* Privacy notice */
.privacy-notice {
    background: rgba(0, 100, 0, 0.05);
    border: 1px solid var(--register-green);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border-radius: 2px;
}

.privacy-notice p {
    margin: 0;
    font-size: 0.75rem;
    color: var(--text-dark);
    line-height: 1.4;
}

.privacy-notice a {
    color: var(--register-green);
    text-decoration: underline;
    font-weight: bold;
}

.privacy-notice a:hover {
    color: var(--ink-black);
}

/* Requirements notice */
.requirements-notice {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--subtle-gray);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border-radius: 2px;
}

.requirements-notice p {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: 0.75rem;
    color: var(--text-dark);
    font-weight: bold;
}

.requirements-notice ul {
    margin: 0;
    padding-left: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--text-dark);
    line-height: 1.4;
}

.requirements-notice li {
    margin-bottom: 0.25rem;
}