/* ============================================
   ENHANCED QR MODAL - MATERIAL DESIGN 3
   Minimalist/Clean Design with Material elevation & spacing
   ============================================ */

/* Material Design Elevation Shadows */
:root {
    --md-elevation-1: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --md-elevation-2: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --md-elevation-3: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --md-elevation-4: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --md-elevation-5: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --md-primary: #1976d2;
    --md-primary-dark: #1565c0;
    --md-secondary: #388e3c;
    --md-secondary-dark: #2e7d32;
    --md-surface: #ffffff;
    --md-background: #fafafa;
    --md-error: #d32f2f;
    --md-text-primary: rgba(0, 0, 0, 0.87);
    --md-text-secondary: rgba(0, 0, 0, 0.60);
    --md-text-disabled: rgba(0, 0, 0, 0.38);
    --md-spacing-1: 4px;
    --md-spacing-2: 8px;
    --md-spacing-3: 12px;
    --md-spacing-4: 16px;
    --md-spacing-5: 20px;
    --md-spacing-6: 24px;
    --md-spacing-8: 32px;
    --md-radius-small: 4px;
    --md-radius-medium: 8px;
    --md-radius-large: 12px;
    --md-radius-xlarge: 16px;
}

/* Overlay */
.enhanced-qr-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1059;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: opacity 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

    .enhanced-qr-modal-overlay.opacity-0 {
        opacity: 0;
        pointer-events: none;
    }

/* Container */
.enhanced-qr-modal-container {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--md-background);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }

    to {
        transform: translateY(0);
    }
}

/* Header - Material Design App Bar */
.enhanced-qr-header {
    position: relative;
    display: flex;
    align-items: center;
    min-height: var(--px-92);
    padding: 0 var(--md-spacing-4);
    background: var(--md-surface);
    box-shadow: var(--md-elevation-2);
    z-index: 10;
    padding-top: var(--px-36);
}

.btn-close-enhanced-qr {
    position: absolute;
    left: var(--md-spacing-2);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: background 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

    .btn-close-enhanced-qr:hover {
        background: rgba(0, 0, 0, 0.04);
    }

    .btn-close-enhanced-qr:active {
        background: rgba(0, 0, 0, 0.1);
    }

    .btn-close-enhanced-qr svg {
        width: 24px;
        height: 24px;
        color: var(--md-text-primary);
    }

.enhanced-qr-title {
    flex: 1;
    color: var(--md-text-primary);
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 0.15px;
    margin: 0;
    text-align: center;
    padding: 0 48px;
}

/* Content */
.enhanced-qr-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--md-spacing-4);
    -webkit-overflow-scrolling: touch;
}

/* Member QR Section - Material Card */
.member-qr-section {
    background: var(--md-surface);
    border-radius: var(--md-radius-xlarge);
    padding: var(--md-spacing-6);
    margin-bottom: var(--md-spacing-4);
    box-shadow: var(--md-elevation-1);
}

.section-title-qr {
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.15px;
    color: var(--md-text-primary);
    margin: 0 0 var(--md-spacing-6) 0;
    text-align: center;
}

.qr-display-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: var(--md-spacing-6);
}

.qr-code-container-enhanced {
    background: var(--md-surface);
    padding: var(--md-spacing-4);
    border-radius: var(--md-radius-medium);
    box-shadow: var(--md-elevation-2);
    display: inline-block;
}

.qr-code-image-enhanced {
    width: 200px;
    height: 200px;
    display: block;
    border-radius: var(--md-radius-small);
}

/* Member Info Card - Material Filled Card */
.member-info-card-qr {
    background: #0671821a;
    border-radius: var(--md-radius-large);
    padding: var(--md-spacing-4);
    border: none;
}

.member-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--md-spacing-3) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

    .member-info-row:last-of-type {
        border-bottom: none;
    }

.info-label {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.info-value {
    font-size: 14px;
    color: var(--bg-btn);
    font-weight: 400;
}

.qr-data-info {
    margin-top: var(--md-spacing-4);
    padding-top: var(--md-spacing-4);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    text-align: center;
}

.qr-data-label {
    display: block;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--md-text-secondary);
    margin-bottom: var(--md-spacing-2);
}

.qr-data-value {
    display: inline-block;
    background: var(--bg-btn);
    padding: var(--md-spacing-2) var(--md-spacing-4);
    border-radius: var(--md-radius-small);
    font-family: 'Roboto Mono', 'Courier New', monospace;
    font-size: 13px;
    color: var(--txt-btn);
    font-weight: 700;
    box-shadow: var(--md-elevation-1);
}

/* Instructions - Material Tonal Surface */
.qr-instructions {
    margin-top: var(--md-spacing-4);
    border-radius: var(--md-radius-medium);
    padding: var(--md-spacing-4);
    align-items: flex-start;
    gap: var(--md-spacing-3);
    border-left: none;
    background: #0671822e;
    display: flex;
    flex-direction: column;
}

.instruction-icon {
    width: 20px;
    height: 20px;
    color: var(--md-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.instruction-text {
    font-size: 13px;
    color: var(--md-text-primary);
    line-height: 1.5;
    margin: 0;
}

/* Coupons Horizontal Section */
.coupons-horizontal-section {
    background: var(--md-surface);
    border-radius: var(--md-radius-xlarge);
    padding: var(--md-spacing-4);
    margin-bottom: var(--md-spacing-4);
    box-shadow: var(--md-elevation-1);
}

.section-header-horizontal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--md-spacing-4);
    padding: 0 var(--md-spacing-2);
}

.section-title-horizontal {
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.15px;
    color: var(--md-text-primary);
    margin: 0;
}

.btn-see-all-link {
    background: none;
    border: none;
    color: var(--md-primary);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.25px;
    cursor: pointer;
    transition: opacity 200ms cubic-bezier(0.4, 0, 0.2, 1);
    padding: var(--md-spacing-2);
    border-radius: var(--md-radius-small);
}

    .btn-see-all-link:hover {
        background: rgba(25, 118, 210, 0.04);
    }

    .btn-see-all-link:active {
        background: rgba(25, 118, 210, 0.1);
    }

/* Horizontal Scroll Container */
.coupons-horizontal-scroll {
    display: flex;
    gap: var(--md-spacing-3);
    overflow-x: auto;
    overflow-y: hidden;
    padding: var(--md-spacing-2) var(--md-spacing-2) var(--md-spacing-4);
    margin: 0 calc(-1 * var(--md-spacing-2));
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.2) transparent;
}

    .coupons-horizontal-scroll::-webkit-scrollbar {
        height: 4px;
    }

    .coupons-horizontal-scroll::-webkit-scrollbar-track {
        background: transparent;
    }

    .coupons-horizontal-scroll::-webkit-scrollbar-thumb {
        background: rgba(0, 0, 0, 0.2);
        border-radius: 2px;
    }

        .coupons-horizontal-scroll::-webkit-scrollbar-thumb:hover {
            background: rgba(0, 0, 0, 0.3);
        }

/* Coupon Horizontal Card - Material Outlined Card */
.coupon-horizontal-card {
    flex: 0 0 260px;
    background: var(--md-surface);
    border-radius: var(--md-radius-large);
    padding: var(--md-spacing-4);
    border: 1px solid rgba(0, 0, 0, 0.12);
    display: flex;
    flex-direction: column;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
    cursor: default;
    box-shadow: var(--md-elevation-1);
}

    .coupon-horizontal-card.claimed {
        border-color: #81c784;
        background: #f1f8e9;
    }

    .coupon-horizontal-card.available {
        border-color: #64b5f6;
        background: #e3f2fd;
    }

    .coupon-horizontal-card:hover {
        box-shadow: var(--md-elevation-3);
        transform: translateY(-2px);
    }

/* Coupon Header */
.coupon-horizontal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--md-spacing-2);
    margin-bottom: var(--md-spacing-3);
}

.coupon-horizontal-title {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.1px;
    color: var(--md-text-primary);
    margin: 0;
    flex: 1;
    line-height: 1.4;
}

.coupon-horizontal-badge {
    flex-shrink: 0;
    padding: 2px var(--md-spacing-2);
    border-radius: var(--md-radius-large);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

    .coupon-horizontal-badge.active {
        background: #c8e6c9;
        color: #2e7d32;
    }

    .coupon-horizontal-badge.new {
        background: #bbdefb;
        color: #1565c0;
    }

/* Coupon Content */
.coupon-horizontal-code {
    font-size: 12px;
    color: var(--md-text-secondary);
    margin: 0 0 var(--md-spacing-2) 0;
    letter-spacing: 0.4px;
}

    .coupon-horizontal-code strong {
        color: var(--md-secondary);
        font-weight: 500;
        font-family: 'Roboto Mono', monospace;
        font-size: 13px;
    }

.coupon-horizontal-description {
    font-size: 13px;
    color: var(--md-text-secondary);
    margin: 0 0 var(--md-spacing-3) 0;
    line-height: 1.43;
    letter-spacing: 0.25px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.coupon-horizontal-expiry,
.coupon-horizontal-validity {
    font-size: 11px;
    color: var(--md-text-disabled);
    margin: 0 0 var(--md-spacing-3) 0;
    letter-spacing: 0.5px;
}

/* Coupon Image */
.coupon-horizontal-image {
    width: 100%;
    height: 100px;
    border-radius: var(--md-radius-medium);
    overflow: hidden;
    margin-bottom: var(--md-spacing-3);
    background: rgba(0, 0, 0, 0.04);
}

    .coupon-horizontal-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

/* Material Buttons */
.btn-show-coupon-qr,
.btn-claim-horizontal {
    width: 100%;
    height: 28px;
    padding: 0px var(--md-spacing-4);
    border-radius: var(--md-radius-large);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.25px;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--md-spacing-2);
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: auto;
    box-shadow: var(--md-elevation-1);
}

.btn-show-coupon-qr {
    background: var(--md-secondary);
    color: white;
}

    .btn-show-coupon-qr:hover {
        background: var(--md-secondary-dark);
        box-shadow: var(--md-elevation-2);
    }

    .btn-show-coupon-qr:active {
        box-shadow: var(--md-elevation-1);
    }

    .btn-show-coupon-qr svg {
        width: 18px;
        height: 18px;
    }

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

    .btn-claim-horizontal:hover {
        background: var(--md-primary-dark);
        box-shadow: var(--md-elevation-2);
    }

    .btn-claim-horizontal:active {
        box-shadow: var(--md-elevation-1);
    }

    .btn-claim-horizontal svg {
        width: 18px;
        height: 18px;
    }

/* Empty State */
.empty-coupons-horizontal {
    flex: 0 0 260px;
    background: rgba(0, 0, 0, 0.02);
    border: 1px dashed rgba(0, 0, 0, 0.12);
    border-radius: var(--md-radius-large);
    padding: var(--md-spacing-8) var(--md-spacing-4);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--md-spacing-2);
}

.empty-icon-small {
    width: 40px;
    height: 40px;
    color: rgba(0, 0, 0, 0.26);
}

.empty-text-small {
    font-size: 13px;
    color: var(--md-text-secondary);
    margin: 0;
    letter-spacing: 0.25px;
}

/* Footer */
.enhanced-qr-footer {
    padding: var(--md-spacing-4);
    background: var(--md-surface);
    border-top: 1px solid rgba(0, 0, 0, 0.12);
    box-shadow: var(--md-elevation-2);
}

.btn-close-footer {
    width: 100%;
    height: 48px;
    background: var(--bg-btn);
    color: var(--txt-btn);
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: var(--md-radius-large);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.25px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

    .btn-close-footer:hover {
        background: rgba(25, 118, 210, 0.04);
        border-color: var(--md-primary);
    }

    .btn-close-footer:active {
        background: rgba(25, 118, 210, 0.1);
    }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet (600dp+) */
@media (min-width: 600px) {
    .enhanced-qr-modal-overlay {
        padding: var(--md-spacing-6);
    }

    .enhanced-qr-modal-container {
        max-width: 600px;
        max-height: 90vh;
        margin: 0 auto;
        border-radius: var(--md-radius-xlarge);
        box-shadow: var(--md-elevation-5);
    }

    .enhanced-qr-header {
        border-radius: var(--md-radius-xlarge) var(--md-radius-xlarge) 0 0;
    }

    .qr-code-image-enhanced {
        width: 240px;
        height: 240px;
    }

    .coupon-horizontal-card {
        flex: 0 0 280px;
    }
}

/* Desktop (960dp+) */
@media (min-width: 960px) {
    .enhanced-qr-modal-container {
        max-width: 840px;
    }

    .enhanced-qr-content {
        padding: var(--md-spacing-6);
    }

    .member-qr-section {
        padding: var(--md-spacing-8);
    }

    .coupons-horizontal-section {
        padding: var(--md-spacing-6);
    }

    .qr-code-image-enhanced {
        width: 280px;
        height: 280px;
    }

    .coupon-horizontal-card {
        flex: 0 0 300px;
    }
}

/* Large Desktop (1280dp+) */
@media (min-width: 1280px) {
    .enhanced-qr-modal-container {
        max-width: 1000px;
    }
}

/* Compact (≤360px) */
@media (max-width: 360px) {
    .enhanced-qr-header {
        min-height: 56px;
        padding: 0 var(--md-spacing-2);
    }

    .btn-close-enhanced-qr {
        width: 40px;
        height: 40px;
    }

    .enhanced-qr-title {
        font-size: 18px;
    }

    .enhanced-qr-content {
        padding: var(--md-spacing-3);
    }

    .member-qr-section,
    .coupons-horizontal-section {
        padding: var(--md-spacing-4);
        margin-bottom: var(--md-spacing-3);
    }

    .qr-code-image-enhanced {
        width: 160px;
        height: 160px;
    }

    .coupon-horizontal-card {
        flex: 0 0 220px;
    }
}

/* ============================================
   MATERIAL MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Ripple Effect (Optional Enhancement) */
.btn-show-coupon-qr,
.btn-claim-horizontal,
.btn-close-footer {
    position: relative;
    overflow: hidden;
}

    .btn-show-coupon-qr::before,
    .btn-claim-horizontal::before,
    .btn-close-footer::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.3);
        transform: translate(-50%, -50%);
        transition: width 0.6s, height 0.6s;
    }

    .btn-show-coupon-qr:active::before,
    .btn-claim-horizontal:active::before {
        width: 300px;
        height: 300px;
    }

    .btn-close-footer:active::before {
        background: rgba(25, 118, 210, 0.2);
        width: 300px;
        height: 300px;
    }

/* Material Typography Scale */
.coupon-horizontal-title {
    font-family: 'Roboto', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.section-title-qr,
.section-title-horizontal,
.enhanced-qr-title {
    font-family: 'Roboto', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* Focus Visible for Accessibility */
.btn-close-enhanced-qr:focus-visible,
.btn-show-coupon-qr:focus-visible,
.btn-claim-horizontal:focus-visible,
.btn-close-footer:focus-visible,
.btn-see-all-link:focus-visible {
    outline: 2px solid var(--md-primary);
    outline-offset: 2px;
}