:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --bg-body: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-sidebar: rgba(255, 255, 255, 0.98);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body.dark {
    --primary: #818cf8;
    --primary-dark: #6366f1;
    --secondary: #a78bfa;
    --success: #34d399;
    --danger: #f87171;
    --warning: #fbbf24;
    --info: #60a5fa;
    --bg-body: linear-gradient(135deg, #1e1b4b 0%, #2e1065 100%);
    --bg-card: rgba(30, 41, 59, 0.95);
    --bg-sidebar: rgba(30, 41, 59, 0.98);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

.theme-toggle { position: fixed; top: 20px; right: 20px; z-index: 1002; }
.theme-btn { width: 45px; height: 45px; border-radius: 50%; background: var(--bg-card); border: none; font-size: 20px; cursor: pointer; box-shadow: var(--shadow); transition: transform 0.3s; color: var(--text-primary); }
.theme-btn:hover { transform: scale(1.1); }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; }
.login-wrapper { width: 100%; max-width: 450px; }
.login-card { background: var(--bg-card); backdrop-filter: blur(10px); border-radius: 32px; padding: clamp(30px, 5vw, 48px); box-shadow: var(--shadow-lg); border: 1px solid var(--border-color); }
.login-brand { text-align: center; margin-bottom: 32px; }
.brand-icon { font-size: 48px; margin-bottom: 16px; }
.login-brand h1 { font-size: 28px; font-weight: 700; background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 8px; }
.login-brand p { color: var(--text-secondary); font-size: 14px; }

.menu-toggle { position: fixed; top: 15px; left: 15px; z-index: 1001; width: 45px; height: 45px; background: var(--bg-card); border-radius: 12px; display: none; flex-direction: column; justify-content: center; align-items: center; gap: 5px; cursor: pointer; box-shadow: var(--shadow); }
.menu-toggle span { width: 25px; height: 3px; background: var(--primary); border-radius: 3px; transition: all 0.3s; }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -7px); }

.sidebar { position: fixed; left: 0; top: 0; width: 280px; height: 100%; background: var(--bg-sidebar); backdrop-filter: blur(10px); display: flex; flex-direction: column; z-index: 1000; transition: transform 0.3s ease; border-right: 1px solid var(--border-color); }
.sidebar-header { padding: 24px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.sidebar-close { display: none; background: none; border: none; font-size: 28px; cursor: pointer; color: var(--text-secondary); }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { font-size: 28px; }
.logo-text { font-size: 20px; font-weight: 700; background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sidebar-nav { flex: 1; padding: 24px; display: flex; flex-direction: column; gap: 8px; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 12px; color: var(--text-secondary); text-decoration: none; cursor: pointer; transition: all 0.3s; }
.nav-item:hover { background: var(--border-color); color: var(--primary); }
.nav-item.active { background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); color: white; }
.sidebar-footer { padding: 24px; border-top: 1px solid var(--border-color); }
.user-info { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.user-avatar { width: 48px; height: 48px; background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.user-details { display: flex; flex-direction: column; }
.user-name { font-weight: 600; color: var(--text-primary); }
.user-role { font-size: 12px; color: var(--text-secondary); }
.logout-btn { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--danger); color: white; text-decoration: none; border-radius: 12px; transition: all 0.3s; }
.logout-btn:hover { transform: translateY(-2px); }
.overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 999; display: none; }

.main-content { margin-left: 280px; padding: 24px 32px; transition: margin-left 0.3s ease; }
.top-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; flex-wrap: wrap; gap: 16px; }
.top-bar h1 { font-size: 28px; font-weight: 700; color: white; }
.header-actions { display: flex; gap: 12px; }
.btn-icon { width: 40px; height: 40px; background: rgba(255, 255, 255, 0.2); border: none; border-radius: 12px; font-size: 20px; cursor: pointer; transition: all 0.3s; }
.btn-icon:hover { background: rgba(255, 255, 255, 0.3); transform: translateY(-2px); }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; margin-bottom: 32px; }
.stat-card { background: var(--bg-card); backdrop-filter: blur(10px); border-radius: 20px; padding: 20px; display: flex; align-items: center; gap: 16px; box-shadow: var(--shadow); transition: all 0.3s; border: 1px solid var(--border-color); }
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.stat-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 28px; }
.stat-icon.blue { background: rgba(59, 130, 246, 0.1); }
.stat-icon.green { background: rgba(16, 185, 129, 0.1); }
.stat-icon.red { background: rgba(239, 68, 68, 0.1); }
.stat-icon.purple { background: rgba(139, 92, 246, 0.1); }
.stat-icon.orange { background: rgba(245, 158, 11, 0.1); }
.stat-info h3 { font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-bottom: 4px; }
.stat-number { font-size: 28px; font-weight: 700; color: var(--text-primary); }

.section { background: var(--bg-card); backdrop-filter: blur(10px); border-radius: 24px; padding: 28px; margin-bottom: 32px; box-shadow: var(--shadow); border: 1px solid var(--border-color); }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; flex-wrap: wrap; gap: 16px; }
.section-header h2 { font-size: 22px; font-weight: 600; color: var(--text-primary); }
.btn-group { display: flex; gap: 10px; flex-wrap: wrap; }

.filters-bar { display: flex; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.search-box { flex: 1; min-width: 200px; }
.sort-box { min-width: 180px; }
.filter-input, .filter-select { width: 100%; padding: 12px 16px; border: 2px solid var(--border-color); border-radius: 12px; font-size: 14px; background: var(--bg-card); color: var(--text-primary); transition: all 0.3s; }
.filter-input:focus, .filter-select:focus { outline: none; border-color: var(--primary); }

.btn { padding: 10px 20px; border: none; border-radius: 12px; font-size: 14px; font-weight: 500; cursor: pointer; transition: all 0.3s; display: inline-flex; align-items: center; gap: 8px; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); color: white; }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: white; }
.btn-info { background: var(--info); color: white; }
.btn-secondary { background: var(--border-color); color: var(--text-primary); }
.btn-sm { padding: 8px 16px; font-size: 13px; }

.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 24px; }
.client-card, .servico-card { background: var(--bg-card); border-radius: 20px; padding: 20px; box-shadow: var(--shadow); transition: all 0.3s; border: 1px solid var(--border-color); }
.client-card:hover, .servico-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.client-card.vencido { border-left: 4px solid var(--danger); }
.client-card.vence-hoje { border-left: 4px solid var(--warning); animation: highlight 1s ease-in-out; }
.card-header { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.client-avatar { width: 52px; height: 52px; background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); border-radius: 16px; display: flex; align-items: center; justify-content: center; color: white; font-weight: 600; font-size: 18px; }
.client-title h3 { font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.status-badge { display: inline-block; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 500; }
.status-badge.ativo { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.status-badge.vencido { background: rgba(239, 68, 68, 0.1); color: var(--danger); animation: pulse 1s infinite; }
.status-badge.vence-hoje { background: rgba(245, 158, 11, 0.1); color: var(--warning); animation: pulse 0.8s infinite; }
.card-body { margin-bottom: 20px; }
.info-row { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--border-color); flex-wrap: wrap; gap: 8px; }
.info-label { color: var(--text-secondary); font-size: 13px; }
.info-value { font-weight: 500; color: var(--text-primary); word-break: break-word; text-align: right; }
.info-value.highlight { color: var(--primary); font-weight: 600; }
.info-value.vencido { color: var(--danger); font-weight: bold; }
.info-value.vence-hoje { color: var(--warning); font-weight: bold; animation: blink 1s infinite; }
.card-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.card-actions .btn { flex: 1; justify-content: center; }

.empty-state { text-align: center; padding: 60px 20px; background: var(--bg-card); border-radius: 20px; border: 2px dashed var(--border-color); }
.empty-state p { margin-bottom: 20px; font-size: 16px; color: var(--text-secondary); }

.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(4px); justify-content: center; align-items: center; z-index: 1000; padding: 16px; }
.modal-content { background: var(--bg-card); border-radius: 24px; width: 100%; max-width: 500px; max-height: 90vh; overflow-y: auto; animation: scaleIn 0.3s ease; border: 1px solid var(--border-color); }
.modal-large { max-width: 700px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; background: var(--bg-card); z-index: 1; }
.modal-header h2 { font-size: 22px; font-weight: 600; color: var(--text-primary); }
.modal-close { width: 32px; height: 32px; background: var(--border-color); border: none; border-radius: 10px; font-size: 20px; cursor: pointer; color: var(--text-primary); }
.modal-footer { padding: 20px 24px; border-top: 1px solid var(--border-color); display: flex; justify-content: flex-end; gap: 12px; position: sticky; bottom: 0; background: var(--bg-card); }

.input-group { margin-bottom: 20px; }
.input-group label { display: block; margin-bottom: 8px; font-weight: 500; color: var(--text-primary); font-size: 14px; }
.input-group input, .input-group select, .input-group textarea { width: 100%; padding: 12px 14px; border: 2px solid var(--border-color); border-radius: 12px; font-size: 14px; background: var(--bg-card); color: var(--text-primary); transition: all 0.3s; }
.input-group input:focus, .input-group select:focus, .input-group textarea:focus { outline: none; border-color: var(--primary); }
.input-group input[readonly] { background: var(--border-color); cursor: not-allowed; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.pix-section { background: var(--border-color); padding: 20px; border-radius: 16px; margin: 20px 0; }
.pix-section h3 { font-size: 16px; font-weight: 600; color: var(--primary); margin-bottom: 16px; }

.alert { padding: 14px 18px; border-radius: 12px; margin-bottom: 24px; display: flex; align-items: center; gap: 12px; }
.alert-error { background: rgba(239, 68, 68, 0.1); border-left: 4px solid var(--danger); color: var(--danger); }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.7; } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes highlight { 0% { background-color: rgba(245, 158, 11, 0.1); } 50% { background-color: rgba(245, 158, 11, 0.2); } 100% { background-color: rgba(245, 158, 11, 0.1); } }

@media (max-width: 768px) {
    .menu-toggle { display: flex; }
    .sidebar { transform: translateX(-100%); width: 280px; }
    .sidebar.open { transform: translateX(0); }
    .sidebar-close { display: block; }
    .main-content { margin-left: 0; padding: 16px; padding-top: 70px; }
    .top-bar { flex-direction: column; align-items: flex-start; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stat-card { padding: 12px; }
    .stat-icon { width: 40px; height: 40px; font-size: 20px; }
    .stat-number { font-size: 20px; }
    .section-header { flex-direction: column; align-items: stretch; }
    .btn-group { width: 100%; }
    .btn-group .btn { flex: 1; justify-content: center; }
    .filters-bar { flex-direction: column; }
    .cards-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .card-actions { flex-direction: column; }
    .card-actions .btn { width: 100%; }
    .info-row { flex-direction: column; align-items: flex-start; }
    .info-value { text-align: left; }
    .modal-content { margin: 16px; max-height: calc(100vh - 32px); }
    .modal-footer { flex-direction: column-reverse; }
    .modal-footer .btn { width: 100%; justify-content: center; }
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--border-color); border-radius: 10px; }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }