/* Premium Theme Design System for Roommate Receipt Splitter */

:root {
    /* DEFAULT THEME (Dark chalkboard) */
    --bg-dark: #2b2927;
    --bg-card: #33312e;
    --border-color: #f5eedf;
    --border-divider: #4e4942;
    --border-shadow: #1a1918;
    --text-primary: #f5eedf;
    --text-secondary: #a39d94;
    --text-muted: #807a72;
    
    /* Harmonious Curated Colors */
    /* Color Palette Themes (Dark mode defaults - Pastel edition) */
    --color-terracotta: #eca191;
    --color-terracotta-bg: #453533;
    --color-sage: #a9c89c;
    --color-sage-bg: #323b30;
    --color-blue: #98c4df;
    --color-blue-bg: #2d3e47;
    --color-lavender: #d2b5cb;
    --color-lavender-bg: #3b323c;
    --color-teal: #84e3dc;
    --color-teal-bg: #233d3c;
    --color-peach: #fbc296;
    --color-peach-bg: #44362d;

    --color-ari: var(--color-member-1, #8ca881);
    --color-ari-bg: var(--color-member-1-bg, #32382f);
    --color-sean: var(--color-member-2, #df8570);
    --color-sean-bg: var(--color-member-2-bg, #453330);
    --color-third: var(--color-member-3, #78a2bb);
    --color-third-bg: var(--color-member-3-bg, #2e3b43);
    --color-fourth: var(--color-member-4, #b392ac);
    --color-fourth-bg: var(--color-member-4-bg, #3b303d);
    --color-split: #e8a751;     /* Amber Yellow Chalk */
    --color-split-bg: #42382c;
    
    --accent: #df8570;          /* Action Accent (Terracotta) */
    --accent-glow: transparent;
    
    --success: #8ca881;
    --danger: #df8570;
    --warning: #e8a751;
    
    --font-hebrew: 'Assistant', sans-serif;
    --font-numbers: 'Outfit', 'Assistant', sans-serif;
    
    --radius-lg: 4px;
    --radius-md: 3px;
    --radius-sm: 2px;
    
    --line-color: #3b3835;
    --transition-snappy: transform 0.1s ease, box-shadow 0.1s ease;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-hebrew);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    
    /* Notebook Grid paper pattern */
    background-image: 
        linear-gradient(var(--line-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--line-color) 1px, transparent 1px);
    background-size: 24px 24px;
}

/* Hide SaaS glow bg */
.glow-bg {
    display: none;
}

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

.mt-4 { margin-top: 1.5rem; }
.hidden { display: none !important; }
.text-ari { color: var(--color-ari) !important; }
.text-sean { color: var(--color-sean) !important; }
.text-third { color: var(--color-third) !important; }
.text-fourth { color: var(--color-fourth) !important; }


/* Sidebar Layout */
.app-layout {
    display: flex;
    flex-direction: row;
    min-height: 100vh;
}

.app-sidebar {
    width: 260px;
    background: var(--bg-card);
    padding: 2.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    gap: 2rem;
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 90;
}

html[dir="rtl"] .app-sidebar {
    border-left: 2px solid var(--border-color);
    border-right: none;
}

html[dir="ltr"] .app-sidebar {
    border-right: 2px solid var(--border-color);
    border-left: none;
}

.sidebar-logo {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.beta-stamp {
    font-size: 0.6rem;
    font-weight: 800;
    text-transform: uppercase;
    background-color: rgba(46, 204, 113, 0.12);
    color: #27ae60;
    border: 1px solid #2ecc71;
    padding: 2px 5px;
    border-radius: 4px;
    font-family: 'Outfit', sans-serif;
    letter-spacing: 0.5px;
    display: inline-block;
    transform: rotate(-12deg);
    transform-origin: center;
    line-height: 1;
    flex-shrink: 0;
}

.sidebar-logo p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-snappy);
    text-align: right;
    box-shadow: 2px 2px 0px var(--border-shadow);
}

.nav-item:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0px var(--border-shadow);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--color-split-bg);
    color: var(--color-split);
    border-color: var(--color-split);
    box-shadow: 1px 1px 0px var(--border-shadow);
    transform: translate(1px, 1px);
}

.nav-item.highlight-feedback {
    border-color: var(--color-peach) !important;
    color: var(--color-peach) !important;
}

.nav-item.highlight-feedback:hover {
    background: var(--color-peach-bg) !important;
    color: var(--color-peach) !important;
}

.nav-item.highlight-feedback.active {
    background: var(--color-peach-bg) !important;
    color: var(--color-peach) !important;
    border-color: var(--color-peach) !important;
}

/* Helper utility for mobile/desktop visibility */
@media (min-width: 769px) {
    .mobile-only {
        display: none !important;
    }
}

.sidebar-footer {
    margin-top: auto;
    text-align: center;
    font-size: 0.85rem;
}

.sidebar-footer a {
    color: var(--text-secondary);
    text-decoration: underline;
}

.app-main {
    flex: 1;
    padding: 2.5rem 0;
    overflow-y: auto;
}

.tab-view {
    display: block;
}

.tab-view.hidden {
    display: none !important;
}

@media (max-width: 768px) {
    .app-layout {
        flex-direction: column;
    }
    
    .app-sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-left: none;
        border-bottom: 2px solid var(--border-color);
        padding: 0.75rem 1rem;
        flex-direction: column;
        align-items: stretch;
        position: sticky;
        top: 0;
        z-index: 100;
        gap: 0.75rem;
    }
    
    .sidebar-logo {
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        gap: 8px;
    }
    
    .sidebar-logo > div:last-child {
        margin-top: 0 !important;
        display: flex;
        align-items: center;
    }
    
    .sidebar-logo h1 {
        font-size: 1.2rem;
    }
    
    .sidebar-logo p {
        display: none;
    }
    
    .sidebar-nav {
        flex-direction: row;
        gap: 8px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
        flex-wrap: nowrap;
        scrollbar-width: none;
        flex-shrink: 1;
        min-width: 0;
    }
    .sidebar-nav::-webkit-scrollbar {
        display: none;
    }
    
    .nav-item {
        padding: 8px 12px;
        font-size: 0.85rem;
        box-shadow: 1px 1px 0px var(--border-shadow);
    }
    
    .nav-item:hover {
        transform: none;
        box-shadow: 1px 1px 0px var(--border-shadow);
    }
    
    .nav-item.active {
        transform: none;
        box-shadow: 0px 0px 0px var(--border-shadow);
    }
    
    .sidebar-footer {
        display: none;
    }
    
    .app-main {
        padding: 1.5rem 0;
    }
}

/* Glassmorphism Panel styles -> Whiteboard Cards */
.glass-panel {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 3px 3px 0px var(--border-shadow);
    transition: var(--transition-snappy);
}

.glass-panel:hover {
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0px var(--border-shadow);
}

.panel {
    padding: 1.5rem;
}

.panel-header {
    margin-bottom: 1.25rem;
    border-bottom: 1.5px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.panel-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.flex-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-actions {
    display: flex;
    gap: 8px;
}

/* Grid Layout for Desktop */
.grid-layout {
    display: grid;
    grid-template-columns: 1fr 1.8fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
    align-items: start;
}

@media (max-width: 900px) {
    .grid-layout {
        grid-template-columns: 1fr;
    }
}

/* File Upload & Drop Zone */
.drop-zone {
    border: 2px dashed var(--border-divider);
    border-radius: var(--radius-md);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    position: relative;
    background: var(--bg-card);
    transition: var(--transition-snappy);
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--accent);
    background: var(--color-split-bg);
}

.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    color: var(--text-secondary);
    transition: var(--transition-snappy);
}

.drop-zone:hover .upload-icon {
    color: var(--accent);
    transform: translateY(-2px);
}

.upload-icon svg {
    width: 100%;
    height: 100%;
}

.drop-zone h3 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.drop-zone-help {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Preview Image Area */
.preview-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.image-wrapper {
    max-height: 320px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-wrapper img {
    max-width: 100%;
    max-height: 320px;
    object-fit: contain;
}

/* Warning & Informative Banners */
.api-warning {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.9rem;
}

.api-warning strong {
    color: var(--warning);
}

.api-warning p {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* Tables Styling */
.table-container {
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.items-table {
    width: 100%;
    border-collapse: collapse;
    text-align: right;
}

.items-table th, .items-table td {
    padding: 10px 12px;
}

.items-table th {
    font-weight: 700;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-bottom: 2.5px solid var(--border-color);
}

.items-table td {
    border-bottom: 1px dashed var(--border-divider);
}

/* Table Columns Sizing & Layout Constraints */
.col-name { min-width: 130px; }
.col-qty { min-width: 65px; text-align: center; }
.col-price { min-width: 90px; font-family: var(--font-numbers); }
.col-split { min-width: 175px; text-align: center; }
.col-actions { min-width: 35px; text-align: center; }

/* Default / 2 Roommates */
.items-table.roommates-2 .col-name { width: 32%; }
.items-table.roommates-2 .col-qty { width: 10%; }
.items-table.roommates-2 .col-price { width: 15%; }
.items-table.roommates-2 .col-split { width: 38%; }
.items-table.roommates-2 .col-actions { width: 5%; }

/* 3 Roommates */
.items-table.roommates-3 .col-name { width: 32%; }
.items-table.roommates-3 .col-qty { width: 10%; }
.items-table.roommates-3 .col-price { width: 15%; }
.items-table.roommates-3 .col-split { width: 38%; }
.items-table.roommates-3 .col-actions { width: 5%; }

/* 4 Roommates */
.items-table.roommates-4 .col-name { width: 28%; }
.items-table.roommates-4 .col-qty { width: 10%; }
.items-table.roommates-4 .col-price { width: 15%; }
.items-table.roommates-4 .col-split { width: 42%; min-width: 230px; }
.items-table.roommates-4 .col-actions { width: 5%; }


.items-table tbody tr {
    transition: var(--transition-snappy);
}

.items-table tbody tr:hover {
    background: var(--bg-dark);
}

/* Editable Inputs in Table */
.table-input {
    background: transparent;
    border: 1.5px solid transparent;
    color: var(--text-primary);
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    width: 100%;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition-snappy);
}

.table-input:hover {
    background: rgba(0, 0, 0, 0.04);
    border-color: var(--border-divider);
}

.table-input:focus {
    outline: none;
    background: var(--bg-dark);
    border-color: var(--border-color);
    box-shadow: 2px 2px 0px var(--border-shadow);
}

input[type="number"].table-input {
    font-family: var(--font-numbers);
    text-align: center;
}

/* Split Segment Pill Button Toggles */
.split-selector {
    display: flex;
    border-radius: var(--radius-sm);
    background: var(--bg-dark);
    padding: 2px;
    gap: 2px;
    width: 100%;
    max-width: max-content;
    margin: 0 auto;
    border: 1.5px solid var(--border-color);
    box-sizing: border-box;
}


.split-pill {
    padding: 4px 12px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-snappy);
    user-select: none;
    text-align: center;
    border: 1px solid transparent;
    white-space: nowrap; /* Prevent wrapping of names/labels inside the pill */
}



/* Ari Selection */
.split-pill.ari-pill {
    color: var(--text-secondary);
}
.split-pill.ari-pill:hover {
    color: var(--color-ari);
}
.split-radio:checked + .split-pill.ari-pill,
.split-checkbox:checked + .split-pill.ari-pill {
    background: var(--color-ari);
    color: var(--bg-dark);
    border: 1px solid var(--border-color);
}

/* Sean Selection */
.split-pill.sean-pill {
    color: var(--text-secondary);
}
.split-pill.sean-pill:hover {
    color: var(--color-sean);
}
.split-radio:checked + .split-pill.sean-pill,
.split-checkbox:checked + .split-pill.sean-pill {
    background: var(--color-sean);
    color: var(--bg-dark);
    border: 1px solid var(--border-color);
}

/* Third (Roommate C) Selection */
.split-pill.third-pill {
    color: var(--text-secondary);
}
.split-pill.third-pill:hover {
    color: var(--color-third);
}
.split-radio:checked + .split-pill.third-pill,
.split-checkbox:checked + .split-pill.third-pill {
    background: var(--color-third);
    color: var(--bg-dark);
    border: 1px solid var(--border-color);
}

/* Fourth (Roommate D) Selection */
.split-pill.fourth-pill {
    color: var(--text-secondary);
}
.split-pill.fourth-pill:hover {
    color: var(--color-fourth);
}
.split-radio:checked + .split-pill.fourth-pill,
.split-checkbox:checked + .split-pill.fourth-pill {
    background: var(--color-fourth);
    color: var(--bg-dark);
    border: 1px solid var(--border-color);
}

/* 50/50 Selection */
.split-pill.split-pill-50 {
    color: var(--text-secondary);
}
.split-pill.split-pill-50:hover {
    color: var(--color-split);
}
.split-radio:checked + .split-pill.split-pill-50,
.split-checkbox:checked + .split-pill.split-pill-50 {
    background: var(--color-split);
    color: var(--bg-dark);
    border: 1px solid var(--border-color);
}

.split-radio,
.split-checkbox {
    display: none;
}

/* Delete Row button */
.delete-row-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition-snappy);
}

.delete-row-btn:hover {
    color: var(--danger);
    background: var(--color-sean-bg);
}

/* Buyer selector styling */
.split-controls {
    border-top: 1.5px solid var(--border-color);
    padding-top: 1.25rem;
    margin-top: 1rem;
}

.buyer-selector-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.control-label {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.segmented-control {
    display: flex;
    background: var(--bg-dark);
    border: 1.5px solid var(--border-color);
    padding: 3px;
    border-radius: var(--radius-sm);
    position: relative;
    width: max-content;
    gap: 4px;
}

.segmented-control input[type="radio"] {
    display: none;
}

.segmented-control label {
    padding: 6px 16px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-snappy);
    user-select: none;
    border: 1px solid transparent;
}

.segmented-control input[type="radio"]:checked + label {
    background: var(--accent);
    color: var(--bg-dark);
    border: 1.5px solid var(--border-color);
}

.segmented-control input[value="ari"]:checked + label {
    background: var(--color-ari);
    color: var(--bg-dark);
    border: 1.5px solid var(--border-color);
}

.segmented-control input[value="sean"]:checked + label {
    background: var(--color-sean);
    color: var(--bg-dark);
    border: 1.5px solid var(--border-color);
}

.segmented-control input[value="third"]:checked + label {
    background: var(--color-third);
    color: var(--bg-dark);
    border: 1.5px solid var(--border-color);
}

.segmented-control input[value="fourth"]:checked + label {
    background: var(--color-fourth);
    color: var(--bg-dark);
    border: 1.5px solid var(--border-color);
}


/* Button UI Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-snappy);
    font-family: var(--font-hebrew);
    border: 1.5px solid var(--border-color);
    box-shadow: 2px 2px 0px var(--border-shadow);
    transform: translate(0, 0);
}

.btn:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0px var(--border-shadow);
}

.btn:active {
    transform: translate(2px, 2px);
    box-shadow: 0px 0px 0px var(--border-shadow);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-dark);
}

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

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
}

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

.btn-danger-outline {
    background: var(--bg-card);
    color: var(--danger);
    border-color: var(--danger);
}

.btn-danger-outline:hover {
    background: var(--color-sean-bg);
}

.btn-whatsapp {
    background: var(--color-ari-bg);
    color: var(--color-ari);
    border-color: var(--color-ari);
}

.btn-whatsapp:hover {
    background: var(--color-ari);
    color: var(--bg-dark);
}

.icon-btn {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-snappy);
    box-shadow: 2px 2px 0px var(--border-shadow);
    transform: translate(0, 0);
}

.icon-btn:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0px var(--border-shadow);
    color: var(--accent);
}

.icon-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 0px 0px 0px var(--border-shadow);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

.btn-icon {
    width: 16px;
    height: 16px;
    margin-left: 6px;
}

.flex-center {
    display: flex;
    align-items: center;
}

.full-width {
    width: 100%;
}

/* Empty State Widget */
.empty-state {
    text-align: center;
    padding: 4rem 1.5rem;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.empty-state h3 {
    font-size: 1.15rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Loader Spinner */
.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
}

.spinner {
    width: 44px;
    height: 44px;
    border: 4px solid var(--border-divider);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s infinite linear;
    margin-bottom: 1rem;
}

@keyframes spin {
    to { transform: rotate(-360deg); }
}

/* Summary Grid Section */
.summary-section {
    margin-top: 1.5rem;
    padding: 1.5rem;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 992px) {
    .summary-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .summary-grid {
        grid-template-columns: 1fr 1fr;
    }
    .result-card, .splitwise-card {
        grid-column: span 2;
    }
}

.glow-card-splitwise {
    background: var(--color-split-bg) !important;
    border: 1.5px dashed var(--color-split) !important;
    border-radius: var(--radius-sm);
    box-shadow: none !important;
}

.summary-card {
    background: transparent;
    border: none;
    padding: 1rem 0.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
}

.card-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.card-val {
    font-size: 1.6rem;
    font-weight: 700;
    font-family: var(--font-numbers);
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.highlight-val {
    font-size: 1.8rem;
    color: var(--color-sean);
}

.glow-card {
    background: var(--color-sean-bg) !important;
    border: 1.5px dashed var(--color-sean) !important;
    border-radius: var(--radius-sm);
    box-shadow: none !important;
}

.summary-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    border-top: 1.5px solid var(--border-color);
    padding-top: 1.25rem;
}

@media (max-width: 768px) {
    .summary-actions {
        flex-direction: column;
    }
    .summary-actions button {
        width: 100%;
    }
}

/* History List Area */
.history-empty {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition-snappy);
    box-shadow: 2px 2px 0px var(--border-shadow);
}

.history-item:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0px var(--border-shadow);
}

.history-info {
    display: flex;
    flex-direction: column;
}

.history-title {
    font-weight: 600;
    font-size: 0.95rem;
}

.history-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.history-result {
    display: flex;
    align-items: center;
    gap: 12px;
}

.history-amt {
    font-weight: 700;
    font-family: var(--font-numbers);
}

/* Modal Backdrops & Glass Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    overflow-y: auto;
    padding: 2rem 0;
    animation: fadeIn 0.2s ease-out;
}

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

.modal {
    width: 90%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 6px 6px 0px var(--border-shadow);
    animation: slideUp 0.15s ease-out;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1.5px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.75rem;
    cursor: pointer;
    line-height: 1;
}

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

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.modal-body p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 1.25rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.form-group input, .form-group select {
    background: var(--bg-dark);
    border: 1.5px solid var(--border-color);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition-snappy);
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    background: var(--bg-card);
    border-color: var(--accent);
    box-shadow: 2px 2px 0px var(--border-shadow);
}

.help-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.help-text a {
    color: var(--color-ari);
    text-decoration: none;
    font-weight: 700;
}

.help-text a:hover {
    text-decoration: underline;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 1rem 1.5rem;
    border-top: 1.5px solid var(--border-color);
    background: var(--bg-dark);
}

/* Toast Messages */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    box-shadow: 4px 4px 0px var(--border-shadow);
    z-index: 1000;
    font-size: 0.9rem;
    font-weight: 700;
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: toastIn 0.15s ease-out;
}

.toast.toast-error {
    border-color: var(--danger);
    background: var(--color-sean-bg);
}

@keyframes toastIn {
    from { transform: translateY(20px) scale(0.9); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

/* Custom Settings Checkbox Layout */
.flex-row-checkbox {
    flex-direction: row !important;
    align-items: center !important;
    gap: 10px;
    margin-bottom: 1rem;
    cursor: pointer;
    user-select: none;
}
.flex-row-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    margin: 0;
}
.flex-row-checkbox label {
    margin: 0;
    cursor: pointer;
    font-weight: 500;
}

/* Light Theme Variables & Overrides */
body.light-theme {
    --bg-dark: #faf8f5;
    --bg-card: #ffffff;
    --border-color: #2d2b2a;
    --border-divider: #e6e0d3;
    --border-shadow: #2d2b2a;
    --text-primary: #2d2b2a;
    --text-secondary: #6e6a64;
    --text-muted: #9c978e;
    
    /* Color Palette Themes (Light mode defaults - Pastel edition) */
    --color-terracotta: #b5604c;
    --color-terracotta-bg: #fdf4f2;
    --color-sage: #597a4d;
    --color-sage-bg: #f1f6ef;
    --color-blue: #3a729b;
    --color-blue-bg: #eef5fc;
    --color-lavender: #8e5982;
    --color-lavender-bg: #faf2fa;
    --color-teal: #15827b;
    --color-teal-bg: #edf9f8;
    --color-peach: #c75a25;
    --color-peach-bg: #fffaf5;

    --color-ari: var(--color-member-1, #526e47);
    --color-ari-bg: var(--color-member-1-bg, #eaf0e6);
    --color-sean: var(--color-member-2, #b85840);
    --color-sean-bg: var(--color-member-2-bg, #faece8);
    --color-third: var(--color-member-3, #33658a);
    --color-third-bg: var(--color-member-3-bg, #e6f0fa);
    --color-fourth: var(--color-member-4, #8a4f7d);
    --color-fourth-bg: var(--color-member-4-bg, #fcf0fa);
    --color-split: #c97f18;
    --color-split-bg: #fdf4e7;
    
    --accent: #b85840;
    --success: #526e47;
    --danger: #b85840;
    --warning: #c97f18;
    
    --line-color: #eae5d8;
    
    background-color: var(--bg-dark);
    color: var(--text-primary);
}

.settings-buttons-row {
    display: flex;
    gap: 8px;
    margin-top: 15px;
    border-top: 1.5px solid var(--border-color);
    padding-top: 15px;
}

.scanner-mode-box {
    margin-top: 15px;
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Settings and Auth Styling */
.settings-section-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--accent);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    border-bottom: 1.5px solid var(--border-divider);
    padding-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.settings-invite-box {
    background: var(--bg-dark);
    border: 1.5px dashed var(--border-divider);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    margin-top: 0.5rem;
}

.invite-code-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.5rem;
    gap: 12px;
}

.invite-code-text {
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-ari);
    letter-spacing: 2px;
}

.border-t {
    border-top: 1px solid var(--border-color);
}

.pt-4 {
    padding-top: 1rem;
}

.auth-modal {
    max-width: 420px !important;
}

.beta-note-banner {
    background: var(--color-split-bg);
    color: var(--color-split);
    border: 1.5px dashed var(--color-split);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    line-height: 1.4;
    margin-bottom: 1.25rem;
    text-align: center;
}

.auth-toggle-text {
    font-size: 0.85rem;
    text-align: center;
    color: var(--text-secondary);
}

.auth-toggle-text a {
    color: var(--color-ari);
    text-decoration: none;
    font-weight: 700;
}

.auth-toggle-text a:hover {
    text-decoration: underline;
}

.input-help {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Mobile Vertical Table Cards Layout */
@media (max-width: 768px) {
    .container {
        padding: 0 0.75rem 2rem !important;
    }

    .items-table, 
    .items-table thead, 
    .items-table tbody, 
    .items-table tr, 
    .items-table td {
        display: block !important;
        width: 100% !important;
    }
    
    .items-table thead {
        display: none !important;
    }
    
    .items-table tr {
        background: var(--bg-card) !important;
        border: 1.5px solid var(--border-color) !important;
        border-radius: var(--radius-md) !important;
        padding: 0.6rem !important;
        margin-bottom: 0.85rem !important;
        box-sizing: border-box;
        display: grid !important;
        grid-template-columns: 1fr 1fr 0.5fr !important;
        grid-gap: 8px !important;
        box-shadow: 2px 2px 0px var(--border-shadow);
    }
    
    .col-name {
        grid-column: 1 / span 3 !important;
        width: 100% !important;
        padding: 0 !important;
    }
    
    .col-qty {
        grid-column: 1 !important;
        width: 100% !important;
        padding: 0 !important;
    }
    
    .col-price {
        grid-column: 2 !important;
        width: 100% !important;
        padding: 0 !important;
    }
    
    .col-actions {
        grid-column: 3 !important;
        width: 100% !important;
        text-align: left !important;
        padding: 0 !important;
        display: flex !important;
        align-items: center !important;
        justify-content: flex-end !important;
    }
    
    .col-split {
        grid-column: 1 / span 3 !important;
        width: 100% !important;
        margin-top: 4px !important;
        padding: 0 !important;
    }
    
    .table-input {
        width: 100% !important;
        height: 38px !important;
        font-size: 0.95rem !important;
    }
    
    .split-selector {
        width: 100% !important;
        max-width: 100% !important;
        display: flex !important;
        flex-wrap: wrap !important;
        height: auto !important;
        min-height: 38px !important;
    }
    
    .split-pill {
        flex: 1 1 auto !important;
        min-width: 50px !important;
        text-align: center !important;
        padding: 8px 4px !important;
        font-size: 0.72rem !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        box-sizing: border-box !important;
    }
    
    .delete-row-btn {
        width: 36px !important;
        height: 36px !important;
        font-size: 1.4rem !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        background: var(--color-sean-bg) !important;
        color: var(--danger) !important;
        border-radius: var(--radius-sm) !important;
        border: 1.5px solid var(--border-color) !important;
    }
}


/* Password Toggle Visibility Styling */
.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.password-input-wrapper input {
    width: 100%;
}

/* Direction-aware padding and positioning for password toggle button */
html[dir="ltr"] .password-input-wrapper input {
    padding-right: 48px !important;
    padding-left: 12px !important;
}
html[dir="ltr"] .btn-toggle-password {
    right: 12px;
    left: auto;
}

html[dir="rtl"] .password-input-wrapper input {
    padding-left: 48px !important;
    padding-right: 12px !important;
}
html[dir="rtl"] .btn-toggle-password {
    left: 12px;
    right: auto;
}

.btn-toggle-password {
    position: absolute;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0;
    outline: none;
    color: var(--text-secondary);
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: transform 0.1s ease;
}

.btn-toggle-password:active {
    transform: scale(0.9);
}


/* Scan Method toggle switch control */
.scan-method-toggle-container {
    display: flex;
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    padding: 3px;
    border: 1.5px solid var(--border-color);
    margin-top: 8px;
    position: relative;
    gap: 4px;
}
.hidden-radio {
    display: none;
}
.toggle-option {
    flex: 1;
    text-align: center;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition-snappy);
    color: var(--text-secondary);
    user-select: none;
    font-size: 0.9rem;
    border: 1px solid transparent;
}
.hidden-radio:checked + .toggle-option {
    background: var(--accent);
    color: var(--bg-dark);
    border: 1.5px solid var(--border-color);
    box-shadow: 1px 1px 0px var(--border-shadow);
}
.toggle-option:hover {
    background: rgba(0, 0, 0, 0.04);
}

.form-row {
    display: flex;
    gap: 12px;
}
.form-col {
    flex: 1;
}

/* AI Scan Limit Badge */
.ai-badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    background: var(--color-split-bg);
    border: 1.5px solid var(--color-split);
    color: var(--color-split);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-weight: 700;
}
.ai-badge strong {
    font-weight: 700;
    font-size: 0.8rem;
}
.ai-badge.ocr-warning {
    background: var(--color-sean-bg);
    border-color: var(--color-sean);
    color: var(--color-sean);
    animation: ocrPulse 2.5s infinite ease-in-out;
}

@keyframes ocrPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(223, 133, 112, 0.25);
    }
    50% {
        box-shadow: 0 0 8px 2px rgba(223, 133, 112, 0.45);
    }
}

/* Guest Disabled Scan Switch Styling */
.toggle-option.disabled-for-guest {
    opacity: 0.35;
    cursor: not-allowed;
    background: var(--bg-dark) !important;
    color: var(--text-muted) !important;
    box-shadow: none !important;
    border: 1.5px dashed var(--border-divider) !important;
}
.toggle-option.disabled-for-guest:hover {
    background: var(--bg-dark) !important;
}

/* Roommate C Text and badge utility */
.text-third { color: var(--color-third) !important; }


/* Triangle Split selector styles */
.col-split {
    position: relative;
}

.btn-triangle-split {
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 12px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: 1px 1px 0px var(--border-shadow);
    transition: var(--transition-snappy);
    white-space: nowrap;
}

.btn-triangle-split:hover {
    transform: translate(-1px, -1px);
    box-shadow: 2px 2px 0px var(--border-shadow);
}

.btn-triangle-split:active {
    transform: translate(1px, 1px);
    box-shadow: 0px 0px 0px var(--border-shadow);
}

.triangle-popup {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 8px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 4px 4px 0px var(--border-shadow);
    padding: 12px;
    z-index: 200;
    width: 184px;
    height: 164px;
}

.triangle-container {
    position: relative;
    width: 160px;
    height: 140px;
}

.triangle-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.triangle-svg polygon {
    fill: none;
    stroke: var(--border-divider);
    stroke-width: 2px;
    stroke-dasharray: 4 4;
}

.triangle-node {
    position: absolute;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1.5px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    box-shadow: 1px 1px 0px var(--border-shadow);
    transition: var(--transition-snappy);
    padding: 0;
}

.triangle-node:hover {
    transform: translate(-50%, -50%) scale(1.1);
    z-index: 12;
}

.node-a {
    left: 80px;
    top: 20px;
    transform: translate(-50%, -50%);
    width: 42px;
    height: 42px;
    font-size: 0.8rem;
}
.node-a.active {
    background: var(--color-ari);
    color: var(--bg-card);
    border-color: var(--color-ari);
}

.node-b {
    left: 20px;
    top: 120px;
    transform: translate(-50%, -50%);
    width: 42px;
    height: 42px;
    font-size: 0.8rem;
}
.node-b.active {
    background: var(--color-sean);
    color: var(--bg-card);
    border-color: var(--color-sean);
}

.node-c {
    left: 140px;
    top: 120px;
    transform: translate(-50%, -50%);
    width: 42px;
    height: 42px;
    font-size: 0.8rem;
}
.node-c.active {
    background: var(--color-third);
    color: var(--bg-card);
    border-color: var(--color-third);
}

.node-ab {
    left: 50px;
    top: 70px;
    transform: translate(-50%, -50%);
    width: 26px;
    height: 26px;
    font-size: 0.65rem;
}
.node-ab.active {
    background: var(--color-split);
    color: var(--bg-card);
    border-color: var(--color-split);
}

.node-bc {
    left: 80px;
    top: 120px;
    transform: translate(-50%, -50%);
    width: 26px;
    height: 26px;
    font-size: 0.65rem;
}
.node-bc.active {
    background: var(--color-split);
    color: var(--bg-card);
    border-color: var(--color-split);
}

.node-ca {
    left: 110px;
    top: 70px;
    transform: translate(-50%, -50%);
    width: 26px;
    height: 26px;
    font-size: 0.65rem;
}
.node-ca.active {
    background: var(--color-split);
    color: var(--bg-card);
    border-color: var(--color-split);
}

.node-all {
    left: 80px;
    top: 87px;
    transform: translate(-50%, -50%);
    width: 28px;
    height: 28px;
    font-size: 0.65rem;
}
.node-all.active {
    background: var(--text-primary);
    color: var(--bg-card);
    border-color: var(--text-primary);
}

/* Settings Roommate Row Layout (Name and Color picker) */
.name-color-row {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    margin-bottom: 12px;
}

.name-color-row .name-group {
    flex: 2;
    margin-bottom: 0 !important;
}

.name-color-row .color-group {
    flex: 3;
    margin-bottom: 0 !important;
}

@media (max-width: 480px) {
    .name-color-row {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
}

/* Color Picker Styles in Settings */
.color-picker-group {
    display: flex;
    gap: 8px;
    margin-top: 6px;
    align-items: center;
}

.color-circle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.2s, border-color 0.2s;
    outline: none;
    padding: 0;
    position: relative;
}

.color-circle:hover {
    transform: scale(1.15);
}

.color-circle.active {
    border-color: var(--text-primary);
    transform: scale(1.05);
}

/* Color Circle Themes */
.color-circle.terracotta {
    background-color: var(--color-terracotta, #df8570);
}
.color-circle.sage {
    background-color: var(--color-sage, #8ca881);
}
.color-circle.blue {
    background-color: var(--color-blue, #78a2bb);
}
.color-circle.lavender {
    background-color: var(--color-lavender, #b392ac);
}
.color-circle.teal {
    background-color: var(--color-teal, #4ecdc4);
}
.color-circle.peach {
    background-color: var(--color-peach, #f4a261);
}

/* Star Rating component */
.star-rating {
    display: inline-flex;
    gap: 8px;
    font-size: 2.2rem;
    cursor: pointer;
    user-select: none;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.star {
    transition: color 0.15s ease, transform 0.1s ease;
}

.star:hover {
    transform: scale(1.2);
}

.star.active {
    color: #f1c40f; /* gold color */
    text-shadow: 0 0 8px rgba(241, 196, 15, 0.4);
}