@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --bill-primary: #3b82f6;
    --bill-primary-dark: #1d4ed8;
    --bill-primary-grad: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    --bill-accent: #0d9488;
    --bill-accent-dark: #0f766e;
    --bill-accent-grad: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%);
    --bill-warning: #f59e0b;
    --bill-danger: #ef4444;
    --bill-success: #10b981;
    --bill-dark: #0f172a;
    --bill-text: #334155;
    --bill-muted: #64748b;
    --bill-bg: #f8fafc;
    --bill-card-bg: rgba(255, 255, 255, 0.95);
    --bill-border: #e2e8f0;
    --bill-radius: 16px;
    --bill-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
    --bill-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    --bill-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
}

/* Base resets for modern responsive app */
body, html, input, button, select, textarea, table {
    font-family: 'Pretendard', 'Inter', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif !important;
    color: var(--bill-text);
}
body {
    background-color: var(--bill-bg);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Navigation Bar (GNB & Top Header)
   ========================================================================== */
.bill-header-wrapper {
    background: #ffffff;
    border-bottom: 1px solid var(--bill-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--bill-shadow-sm);
}
.bill-header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    box-sizing: border-box;
}
.bill-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--bill-dark);
    text-decoration: none !important;
    letter-spacing: -0.5px;
    white-space: nowrap;
    flex-shrink: 0;
}
.bill-logo-icon {
    width: 38px;
    height: 38px;
    background: var(--bill-primary-grad);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 10px rgba(59, 130, 246, 0.3);
    flex-shrink: 0;
}
.bill-user-section {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    flex-shrink: 0;
}
.role-badge {
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    white-space: nowrap;
}
.role-badge.landlord {
    background-color: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}
.role-badge.tenant {
    background-color: #e0f2fe;
    color: #0369a1;
    border: 1px solid #bae6fd;
}
.role-badge.guest {
    background-color: #f1f5f9;
    color: #475569;
    border: 1px solid #e2e8f0;
}
.role-short { display: none; }

.bill-nav-menu {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}
.bill-nav-item a {
    display: block;
    padding: 0.5rem 0.65rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: -0.4px;
    color: var(--bill-muted);
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.bill-nav-item a:hover, .bill-nav-item a.active {
    color: var(--bill-primary-dark);
    background-color: #eff6ff;
}

/* Mobile & Tablet Hamburger Menu */
.bill-mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--bill-dark);
    cursor: pointer;
    padding: 0.3rem 0.5rem;
    border-radius: 8px;
    transition: all 0.2s ease;
}
.bill-mobile-toggle:active {
    background-color: #e2e8f0;
}
@media (min-width: 1281px) {
    .bill-drawer-btn, .bill-nav-divider {
        display: none !important;
    }
}
@media (max-width: 1380px) {
    .role-full { display: none !important; }
    .role-short { display: inline !important; }
}
@media (max-width: 1280px) {
    .bill-nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 2px solid #cbd5e1;
        box-shadow: 0 15px 35px -5px rgba(0,0,0,0.15);
        flex-direction: column;
        padding: 0.75rem 1rem;
        gap: 0.25rem;
        z-index: 1001;
    }
    .bill-nav-menu.show {
        display: flex !important;
    }
    .bill-nav-item {
        width: 100%;
    }
    .bill-nav-item a {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
        width: 100%;
        box-sizing: border-box;
        display: flex;
        align-items: center;
        justify-content: flex-start !important;
        text-align: left !important;
        border-radius: 8px;
        color: #1e293b;
        font-weight: 700;
        text-decoration: none !important;
    }
    .bill-nav-item a:hover, .bill-nav-item a:active {
        background-color: #f1f5f9;
        color: #2563eb;
    }
    .bill-drawer-btn {
        display: flex !important;
    }
    .bill-nav-divider {
        display: block !important;
        border-top: 1px dashed #cbd5e1;
        margin: 0.4rem 0;
        padding-top: 0.2rem;
    }
    .bill-mobile-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: #f8fafc;
        border: 1px solid #cbd5e1;
    }
    .bill-header-inner {
        padding: 0.6rem 1rem;
    }
    .bill-header-btn {
        display: none !important;
    }
}
@media (max-width: 650px) {
    .bill-header-inner {
        padding: 0.5rem 0.8rem;
    }
    .bill-logo span small {
        display: none !important;
    }
    .role-badge {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
        font-weight: 700;
    }
    .role-full {
        display: none;
    }
    .role-short {
        display: inline;
    }
}

/* ==========================================================================
   Layout Containers & Cards (GNUBOARD Default CSS Overrides & Mobile Tuning)
   ========================================================================== */
#wrapper, #hd, #ft, #container_wr {
    min-width: 0 !important;
    max-width: 100% !important;
    float: none !important;
    box-sizing: border-box !important;
}
#container, #container_wr, .bill-container {
    float: none !important;
    width: 100% !important;
    max-width: 1400px !important;
    min-height: calc(100vh - 380px) !important;
    margin: 2rem auto !important;
    padding: 0 1.5rem !important;
    box-sizing: border-box !important;
    clear: both !important;
    position: relative !important;
}
@media (max-width: 768px) {
    #container, #container_wr, .bill-container {
        margin: 1rem auto !important;
        padding: 0 0.85rem !important;
    }
    .bill-page-header {
        margin-bottom: 1.25rem !important;
    }
    .bill-page-title {
        font-size: 1.35rem !important;
        font-weight: 800 !important;
        line-height: 1.3 !important;
        letter-spacing: -0.5px !important;
        margin-bottom: 0.35rem !important;
    }
    .bill-page-desc {
        font-size: 0.85rem !important;
        line-height: 1.45 !important;
        color: #64748b !important;
    }
    .bill-card {
        padding: 1.2rem 1rem !important;
        margin-bottom: 1.5rem !important;
        border-radius: 12px !important;
    }
    .bill-card-header {
        margin-bottom: 0.8rem !important;
        padding-bottom: 0.6rem !important;
        flex-wrap: wrap;
        gap: 0.4rem;
    }
    .bill-card-title {
        font-size: 1.15rem !important;
    }
    .stat-card {
        padding: 1.15rem 1rem !important;
    }
    .stat-value {
        font-size: 1.5rem !important;
        margin: 0.35rem 0 !important;
    }
}
.bill-page-header {
    margin-bottom: 2rem;
}
.bill-page-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--bill-dark);
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.5px;
}
.bill-page-desc {
    color: var(--bill-muted);
    font-size: 1rem;
    margin: 0;
}

/* Grid Systems & Mobile Responsive Flexing */
.bill-grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.bill-grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}
.bill-grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
}
@media (max-width: 768px) {
    .bill-grid-2, .bill-grid-3, .bill-grid-4 {
        grid-template-columns: 1fr !important;
        gap: 0.85rem !important;
    }
}

/* Glassmorphic & Modern Cards */
.bill-card {
    background: var(--bill-card-bg);
    border: 1px solid var(--bill-border);
    border-radius: var(--bill-radius);
    padding: 1.5rem;
    box-shadow: var(--bill-shadow);
    transition: all 0.25s ease;
    backdrop-filter: blur(8px);
}
.bill-card.hover-effect:hover {
    transform: translateY(-4px);
    box-shadow: var(--bill-shadow-lg);
    border-color: #cbd5e1;
}
.bill-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--bill-border);
}
.bill-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--bill-dark);
    margin: 0;
}

/* Stat Widgets */
.stat-card {
    background: #ffffff;
    border-radius: var(--bill-radius);
    padding: 1.5rem;
    border: 1px solid var(--bill-border);
    box-shadow: var(--bill-shadow);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}
.stat-card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--bill-primary);
}
.stat-card.accent::after { background: var(--bill-accent); }
.stat-card.warning::after { background: var(--bill-warning); }
.stat-card.danger::after { background: var(--bill-danger); }
.stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--bill-muted);
    letter-spacing: 0.5px;
}
.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--bill-dark);
    margin: 0.5rem 0;
}
.stat-desc {
    font-size: 0.85rem;
    color: var(--bill-muted);
}

/* ==========================================================================
   Interactive Buttons & Forms
   ========================================================================== */
.btn-bill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none !important;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.btn-bill:active {
    transform: scale(0.97);
}
.btn-bill-primary {
    background: var(--bill-primary-grad);
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
}
.btn-bill-primary:hover {
    filter: brightness(1.08);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.45);
}
.btn-bill-accent {
    background: var(--bill-accent-grad);
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.35);
}
.btn-bill-accent:hover {
    filter: brightness(1.08);
    box-shadow: 0 6px 16px rgba(13, 148, 136, 0.45);
}
.btn-bill-secondary {
    background: #f1f5f9;
    color: var(--bill-text) !important;
    border: 1px solid #cbd5e1;
}
.btn-bill-secondary:hover {
    background: #e2e8f0;
    color: var(--bill-dark) !important;
}
.btn-bill-danger {
    background: #ef4444;
    color: #ffffff !important;
}
.btn-bill-danger:hover {
    background: #dc2626;
}

.bill-form-group {
    margin-bottom: 1.25rem;
}
.bill-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--bill-dark);
    margin-bottom: 0.4rem;
}
.bill-input, .bill-select, .bill-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--bill-border);
    border-radius: 10px;
    font-size: 1rem;
    background: #ffffff;
    box-sizing: border-box;
    transition: all 0.2s ease;
}
.bill-input:focus, .bill-select:focus, .bill-textarea:focus {
    outline: none;
    border-color: var(--bill-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* ==========================================================================
   Responsive Tables & Badges
   ========================================================================== */
.bill-table-wrapper {
    background: #ffffff;
    border-radius: var(--bill-radius);
    border: 1px solid var(--bill-border);
    overflow-x: auto;
    box-shadow: var(--bill-shadow-sm);
}
.bill-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.bill-table th {
    background-color: #f8fafc;
    padding: 0.85rem 1.2rem;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--bill-muted);
    border-bottom: 2px solid var(--bill-border);
}
.bill-table td {
    padding: 1rem 1.2rem;
    font-size: 0.95rem;
    border-bottom: 1px solid #f1f5f9;
    color: var(--bill-text);
}
.bill-table tr:hover {
    background-color: #f8fafc;
}
.status-pill {
    padding: 0.3rem 0.65rem;
    border-radius: 9999px;
    font-size: 0.78rem;
    font-weight: 700;
    display: inline-block;
}
.status-pill.paid { background: #d1fae5; color: #065f46; }
.status-pill.unpaid { background: #fee2e2; color: #991b1b; }
.status-pill.pending { background: #fef3c7; color: #92400e; }

/* ==========================================================================
   OCR Upload & Camera Interaction Section
   ========================================================================== */
.ocr-upload-box {
    border: 2px dashed #cbd5e1;
    border-radius: var(--bill-radius);
    padding: 2.5rem 1.5rem;
    text-align: center;
    background: #f8fafc;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
}
.ocr-upload-box:hover {
    border-color: var(--bill-primary);
    background: #eff6ff;
}
.ocr-icon {
    font-size: 3rem;
    color: var(--bill-primary);
    margin-bottom: 0.75rem;
    display: block;
}
.ocr-progress-container {
    display: none;
    margin-top: 1.5rem;
    background: #ffffff;
    padding: 1.25rem;
    border-radius: 12px;
    border: 1px solid var(--bill-border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.ocr-progress-bar-bg {
    height: 10px;
    background: #e2e8f0;
    border-radius: 9999px;
    overflow: hidden;
    margin-top: 0.5rem;
}
.ocr-progress-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--bill-primary-grad);
    transition: width 0.3s ease;
}
.ocr-preview-image {
    max-width: 100%;
    max-height: 280px;
    border-radius: 12px;
    margin-top: 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border: 2px solid var(--bill-border);
}

/* ==========================================================================
   Invoice / Bill Statement Receipt Format (고지서 양식)
   ========================================================================== */
.invoice-receipt {
    max-width: 720px;
    margin: 0 auto;
    background: #ffffff;
    border: 1px solid var(--bill-border);
    border-radius: var(--bill-radius);
    box-shadow: var(--bill-shadow-lg);
    padding: 3rem;
    position: relative;
    overflow: hidden;
}
@media (max-width: 650px) {
    .invoice-receipt {
        padding: 1.5rem;
    }
}
.invoice-receipt::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: var(--bill-primary-grad);
}
.invoice-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 2px solid var(--bill-border);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}
.invoice-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--bill-dark);
    margin: 0;
    letter-spacing: -1px;
}
.invoice-unit-tag {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--bill-primary);
    margin-top: 0.25rem;
}
.invoice-meta {
    text-align: right;
    font-size: 0.95rem;
    color: var(--bill-muted);
    line-height: 1.6;
}
.invoice-summary-table {
    width: 100%;
    margin-bottom: 2rem;
    border-collapse: collapse;
}
.invoice-summary-table th {
    padding: 0.75rem;
    border-bottom: 1px solid var(--bill-border);
    font-weight: 700;
    color: var(--bill-muted);
    text-align: left;
}
.invoice-summary-table td {
    padding: 1rem 0.75rem;
    border-bottom: 1px solid #f1f5f9;
    font-size: 1.05rem;
}
.invoice-total-row {
    background: #f8fafc;
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--bill-dark);
}
.invoice-total-row td {
    padding: 1.25rem 0.75rem;
    border-top: 2px solid var(--bill-dark);
    border-bottom: none;
}
.bank-notice-box {
    background: #eff6ff;
    border-left: 5px solid var(--bill-primary);
    padding: 1.25rem;
    border-radius: 8px;
    margin-top: 2rem;
}
.bank-notice-title {
    font-weight: 800;
    color: var(--bill-primary-dark);
    margin-bottom: 0.4rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.bank-notice-content {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--bill-dark);
}

/* ==========================================================================
   Registration Role Selector Cards
   ========================================================================== */
.role-select-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}
.role-card-input {
    position: absolute !important;
    opacity: 0 !important;
    width: 1px !important;
    height: 1px !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    pointer-events: none !important;
}
.role-card-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    background: #ffffff;
    border: 2px solid #e2e8f0;
    border-radius: var(--bill-radius);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    box-shadow: var(--bill-shadow-sm);
}
.role-card-label:hover {
    border-color: #93c5fd;
    transform: translateY(-4px);
    box-shadow: var(--bill-shadow);
}
#role_landlord:checked + .role-card-label {
    border-color: #f59e0b !important;
    background: #fffbeb !important;
    box-shadow: 0 10px 25px -5px rgba(245, 158, 11, 0.3) !important;
    transform: scale(1.02);
}
#role_tenant:checked + .role-card-label {
    border-color: #3b82f6 !important;
    background: #eff6ff !important;
    box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.3) !important;
    transform: scale(1.02);
}
.role-card-input:checked + .role-card-label .role-icon {
    transform: scale(1.1);
}
.role-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    transition: transform 0.25s ease;
}
.role-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--bill-dark);
    margin-bottom: 0.5rem;
}
.role-desc {
    font-size: 0.9rem;
    color: var(--bill-muted);
    line-height: 1.4;
}