/* ============================================
   DivideAI - Divisão inteligente de custos
   CSS Principal - Mobile First
   ============================================ */

:root {
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-light: #e0e7ff;
    --accent-subtle: rgba(79, 70, 229, 0.08);
    --dark: #1e1b2e;
    --dark-soft: #2d2a3e;
    --surface: #ffffff;
    --surface-alt: #f8f9fc;
    --border: #e5e7eb;
    --text: #1f2937;
    --text-muted: #6b7280;
    --success: #059669;
    --success-light: #d1fae5;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --warning: #d97706;
    --warning-light: #fef3c7;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.08), 0 4px 6px rgba(0,0,0,0.05);
    --transition: 0.2s ease;
}

/* ---- Base ---- */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Barlow Semi Condensed', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text);
    background: var(--surface-alt);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

/* ---- Navbar ---- */
.bg-dark-custom {
    background: var(--dark) !important;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.navbar-brand {
    font-size: 1.25rem;
    letter-spacing: -0.5px;
}

.brand-icon {
    background: var(--accent);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
}

.text-accent {
    color: var(--accent) !important;
}

.bg-accent-subtle {
    background: var(--accent-subtle) !important;
}

.text-accent-emphasis {
    color: var(--accent) !important;
}

/* ---- Main Content ---- */
.main-content {
    flex: 1;
    padding-bottom: 2rem;
}

/* ---- Cards ---- */
.card-custom {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition);
}

.card-custom:hover {
    box-shadow: var(--shadow-md);
}

.card-custom .card-body {
    padding: 1.25rem;
}

.card-header-custom {
    background: transparent;
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.25rem;
    font-weight: 600;
}

/* ---- Buttons ---- */
.btn-accent {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    padding: 0.6rem 1.5rem;
    transition: all var(--transition);
}

.btn-accent:hover,
.btn-accent:focus {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-accent-outline {
    background: transparent;
    color: var(--accent);
    border: 1.5px solid var(--accent);
    border-radius: var(--radius-sm);
    font-weight: 500;
    padding: 0.6rem 1.5rem;
    transition: all var(--transition);
}

.btn-accent-outline:hover {
    background: var(--accent);
    color: #fff;
}

.btn-lg-mobile {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    min-height: 48px;
}

/* ---- Forms ---- */
.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border);
    padding: 0.65rem 0.9rem;
    font-size: 0.95rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-label {
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
    color: var(--text);
}

/* ---- Stat Cards ---- */
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.85rem 0.5rem;
    text-align: center;
    transition: all var(--transition);
    height: 100%;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    line-height: 1.2;
    word-break: break-word;
    overflow-wrap: break-word;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-top: 0.2rem;
    line-height: 1.1;
}

/* ---- Expense List ---- */
.expense-item {
    display: flex;
    align-items: center;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
    gap: 0.75rem;
}

.expense-item:last-child {
    border-bottom: none;
}

.expense-item:hover {
    background: var(--surface-alt);
}

.expense-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.expense-info {
    flex: 1;
    min-width: 0;
}

.expense-info .expense-desc {
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.expense-info .expense-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.expense-value {
    font-weight: 600;
    font-size: 1rem;
    white-space: nowrap;
}

/* ---- Balance ---- */
.balance-positive {
    color: var(--success);
}

.balance-negative {
    color: var(--danger);
}

.balance-zero {
    color: var(--text-muted);
}

/* ---- Settlement Cards ---- */
.settlement-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.settlement-arrow {
    color: var(--accent);
    font-size: 1.25rem;
}

.settlement-value {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--accent);
}

.settlement-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.settlement-paid {
    opacity: 0.6;
    border-color: var(--success) !important;
}

.settlement-paid .settlement-value {
    color: var(--success);
    text-decoration: line-through;
}

/* ---- Category Badge ---- */
.cat-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--surface-alt);
    color: var(--text);
    border: 1px solid var(--border);
}

/* ---- Participant Card ---- */
.participant-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all var(--transition);
}

.participant-card:hover {
    box-shadow: var(--shadow);
}

.participant-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    color: #fff;
    flex-shrink: 0;
}

/* ---- Split Preview ---- */
.split-preview {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

.split-preview-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0;
    font-size: 0.9rem;
}

.split-preview-row + .split-preview-row {
    border-top: 1px solid var(--border);
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

.empty-state h5 {
    color: var(--text);
    font-weight: 600;
}

/* ---- Hero Section (Home) ---- */
.hero-section {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-soft) 100%);
    color: #fff;
    padding: 4rem 0 3rem;
    text-align: center;
}

.hero-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.hero-section .lead {
    color: rgba(255,255,255,0.7);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto;
}

.hero-actions {
    margin-top: 2rem;
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ---- Feature Cards ---- */
.feature-card {
    text-align: center;
    padding: 1.5rem 1rem;
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    background: var(--accent-light);
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.feature-card h5 {
    font-weight: 600;
    font-size: 1rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ---- QR Code ---- */
.qr-container {
    background: #fff;
    padding: 1rem;
    border-radius: var(--radius);
    display: inline-block;
    border: 1px solid var(--border);
}

/* ---- Footer ---- */
.footer-custom {
    background: var(--dark);
    color: rgba(255,255,255,0.85);
}

.footer-custom .text-muted {
    color: rgba(255,255,255,0.55) !important;
}

.footer-custom .text-accent {
    color: var(--accent) !important;
}

/* ---- Back Button ---- */
.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.85rem;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--accent);
    background: var(--accent-subtle);
    border: 1px solid var(--accent-light);
    border-radius: 20px;
    text-decoration: none;
    transition: all var(--transition);
}

.btn-back:hover {
    background: var(--accent-light);
    color: var(--accent-hover);
}

.btn-back i {
    font-size: 0.75rem;
}

/* ---- Tabs Custom ---- */
.nav-tabs-custom .nav-link {
    border: none;
    color: var(--text-muted);
    font-weight: 500;
    padding: 0.6rem 1rem;
    border-bottom: 2px solid transparent;
    border-radius: 0;
}

.nav-tabs-custom .nav-link.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: transparent;
}

.nav-tabs-custom .nav-link:hover {
    color: var(--accent);
}

/* ---- Divider ---- */
.divider {
    height: 1px;
    background: var(--border);
    margin: 1.5rem 0;
}

/* ---- Avatar Colors ---- */
.avatar-1 { background: #4f46e5; }
.avatar-2 { background: #059669; }
.avatar-3 { background: #dc2626; }
.avatar-4 { background: #d97706; }
.avatar-5 { background: #7c3aed; }
.avatar-6 { background: #0891b2; }
.avatar-7 { background: #be185d; }
.avatar-8 { background: #65a30d; }

/* ---- Utilities ---- */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.gap-grid {
    gap: 1rem;
}

.cursor-pointer {
    cursor: pointer;
}

/* ---- Action Grid (dashboard) ---- */
.action-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.action-grid .btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.85rem 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    min-height: 64px;
    border-radius: var(--radius);
    white-space: nowrap;
    text-decoration: none;
}

.action-grid .btn i {
    font-size: 1.1rem;
}

/* ---- Share Link ---- */
.share-link-box {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: monospace;
    font-size: 0.75rem;
    word-break: break-all;
    line-height: 1.3;
}

/* ---- Custom Category Dropdown ---- */
.cat-dropdown {
    position: relative;
}

.cat-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.65rem 0.9rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    cursor: pointer;
    font-size: 0.95rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.cat-dropdown-toggle:focus,
.cat-dropdown.open .cat-dropdown-toggle {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
    outline: none;
}

.cat-dropdown-toggle .cat-dd-icon {
    width: 24px;
    text-align: center;
    flex-shrink: 0;
    font-size: 0.95rem;
}

.cat-dropdown-toggle .cat-dd-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cat-dropdown-toggle .cat-dd-arrow {
    color: var(--text-muted);
    font-size: 0.7rem;
    flex-shrink: 0;
    transition: transform 0.2s;
}

.cat-dropdown.open .cat-dd-arrow {
    transform: rotate(180deg);
}

.cat-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 1050;
    max-height: 260px;
    overflow: hidden;
    flex-direction: column;
}

.cat-dropdown.open .cat-dropdown-menu {
    display: flex;
}

.cat-dropdown-search {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.cat-dropdown-search input {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.65rem;
    font-size: 0.85rem;
    outline: none;
}

.cat-dropdown-search input:focus {
    border-color: var(--accent);
}

.cat-dropdown-list {
    overflow-y: auto;
    flex: 1;
}

.cat-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.15s;
}

.cat-dropdown-item:hover,
.cat-dropdown-item.highlighted {
    background: var(--surface-alt);
}

.cat-dropdown-item.selected {
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 500;
}

.cat-dropdown-item .cat-dd-item-icon {
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.cat-dropdown-item.d-none {
    display: none !important;
}

/* ---- Responsive ---- */
@media (max-width: 575.98px) {
    .container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .hero-section {
        padding: 2.5rem 0 2rem;
    }

    .hero-section h1 {
        font-size: 1.85rem;
    }

    .stat-card {
        padding: 0.7rem 0.35rem;
    }

    .stat-icon {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
        margin-bottom: 0.4rem;
    }

    .stat-value {
        font-size: 1rem;
    }

    .stat-label {
        font-size: 0.65rem;
    }

    .btn-lg-mobile {
        width: 100%;
    }

    .card-custom .card-body {
        padding: 1rem;
    }

    .card-header-custom {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }

    .settlement-card {
        flex-direction: column;
        text-align: center;
    }

    .settlement-actions {
        width: 100%;
        justify-content: center;
    }

    .expense-item {
        padding: 0.7rem 0.75rem;
        gap: 0.6rem;
    }

    .expense-icon {
        width: 36px;
        height: 36px;
        font-size: 0.85rem;
    }

    .expense-info .expense-desc {
        font-size: 0.88rem;
    }

    .expense-value {
        font-size: 0.9rem;
    }
}

@media (min-width: 768px) {
    .hero-section {
        padding: 5rem 0 4rem;
    }

    .hero-section h1 {
        font-size: 3rem;
    }

    .action-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .stat-card {
        padding: 1.25rem;
    }

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

    .stat-label {
        font-size: 0.8rem;
    }
}

/* ---- Loading Spinner ---- */
.spinner-accent {
    color: var(--accent);
}

/* ---- Copy Button ---- */
.btn-copy {
    position: relative;
}

.btn-copy.copied::after {
    content: 'Copiado!';
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark);
    color: #fff;
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    white-space: nowrap;
    animation: fadeOut 1.5s forwards;
}

@keyframes fadeOut {
    0%, 70% { opacity: 1; }
    100% { opacity: 0; }
}

/* ---- Modal ---- */
.modal-content {
    border-radius: var(--radius);
    border: none;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border);
}

.modal-footer {
    border-top: 1px solid var(--border);
}


/* ---- Password Toggle ---- */
.input-group .btn-outline-secondary {
    border-color: var(--border);
}

/* ---- Split type selector ---- */
.split-type-btn {
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--surface);
}

.split-type-btn:hover {
    border-color: var(--accent);
    background: var(--accent-subtle);
}

.split-type-btn.active {
    border-color: var(--accent);
    background: var(--accent-light);
    color: var(--accent);
}

.split-type-btn i {
    font-size: 1.25rem;
    display: block;
    margin-bottom: 0.35rem;
}

.split-type-btn span {
    font-size: 0.78rem;
    font-weight: 500;
}

/* ---- Photo Upload ---- */
.photo-upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color var(--transition);
}

.photo-upload-area:hover {
    border-color: var(--accent);
}

.photo-upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1.5rem 1rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition);
}

.photo-upload-placeholder:hover {
    color: var(--accent);
    background: var(--accent-subtle);
}

.photo-upload-placeholder i {
    font-size: 1.5rem;
}

.photo-upload-placeholder span {
    font-size: 0.85rem;
    font-weight: 500;
}

.photo-upload-preview {
    position: relative;
    text-align: center;
    background: var(--surface-alt);
}

.photo-upload-preview img {
    max-height: 200px;
    max-width: 100%;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    padding: 0.5rem;
}

.photo-remove-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: var(--danger);
    color: #fff;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform var(--transition);
}

.photo-remove-btn:hover {
    transform: scale(1.1);
}

/* ---- Print styles ---- */
@media print {
    .navbar, .footer-custom, .btn, .no-print {
        display: none !important;
    }

    .main-content {
        padding: 0;
    }

    .card-custom {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}