:root {
    --primary: #0f172a;
    --primary-hover: #1e293b;
    --secondary: #3b82f6;
    --secondary-hover: #2563eb;
    --background: #f8fafc;
    --surface: #ffffff;
    --text: #334155;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --radius: 8px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.5;
}

.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }

/* Navbar */
.navbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-content { display: flex; justify-content: space-between; align-items: center; }
.brand { font-size: 1.25rem; font-weight: 700; color: var(--primary); text-decoration: none; }
.brand span { color: var(--secondary); }

/* Typography */
h1, h2, h3 { color: var(--primary); font-weight: 600; margin-bottom: 0.5rem; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.875rem; }

/* Spacing */
.mt-1 { margin-top: 0.5rem; }
.mt-10 { margin-top: 1.5rem; }
.mb-10 { margin-bottom: 1.5rem; }
.p-10 { padding: 1.5rem; }

/* Utility Classes */
.bg-light { background-color: #f1f5f9; }
.bg-white { background-color: var(--surface); }
.rounded { border-radius: var(--radius); }
.full-width { width: 100%; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: all 0.2s;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--secondary); color: white; }
.btn-primary:hover { background: var(--secondary-hover); }
.btn-secondary { background: var(--primary); color: white; }
.btn-secondary:hover { background: var(--primary-hover); }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg-light); border-color: var(--text-muted); }
.btn-danger { background: var(--danger); color: white; }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.875rem; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: 0.5rem; color: var(--primary); }
.input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}
.input:focus { border-color: var(--secondary); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }

/* Cards & Layout */
.card { background: var(--surface); border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow); border: 1px solid var(--border); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 768px) { .grid-2 { grid-template-columns: 1fr; } }

/* Wizard */
.wizard-container { max-width: 700px; margin: 0 auto; }
.step-indicator { display: flex; justify-content: space-between; border-bottom: 2px solid var(--border); margin-bottom: 2rem; padding-bottom: 1rem; }
.step { color: var(--text-muted); font-weight: 500; }
.step.active { color: var(--secondary); font-weight: 600; }
.wizard-actions { display: flex; justify-content: space-between; margin-top: 2rem; border-top: 1px solid var(--border); padding-top: 1rem; }

/* Dashboard & Badges */
.dashboard-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); padding-bottom: 1rem; margin-bottom: 1.5rem; }
.table { width: 100%; border-collapse: collapse; text-align: left; }
.table th, .table td { padding: 1rem; border-bottom: 1px solid var(--border); }
.table th { color: var(--text-muted); font-weight: 600; text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.05em; }
.badge { padding: 0.25rem 0.5rem; border-radius: 9999px; font-size: 0.75rem; font-weight: 600; }
.badge-enviado, .badge-visto { background: #e0f2fe; color: #0284c7; }
.badge-orcamento_enviado, .badge-orcamento_lido, .badge-pendente { background: #fef3c7; color: #b45309; }
.badge-orcamento_aprovado, .badge-pago, .badge-concluido { background: #d1fae5; color: #059669; }
.badge-orcamento_recusado, .badge-cancelado { background: #fee2e2; color: #b91c1c; }

/* Password Strength */
.strength-meter { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.strength-meter .bar { height: 100%; width: 0; transition: all 0.3s ease; }

/* Hero */
.hero { padding: 4rem 0; background: var(--primary); color: white; margin-bottom: -3rem; padding-bottom: 6rem; }
.hero h1 { color: white; font-size: 2.5rem; }
.hero p { color: #cbd5e1; max-width: 600px; margin: 0 auto; font-size: 1.125rem; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.stat-card { background: var(--surface); padding: 1.5rem; border-radius: var(--radius); border: 1px solid var(--border); text-align: center; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-label { color: var(--text-muted); font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.5rem; }

/* Payment specific */
.payment-methods { display: flex; gap: 1rem; margin-top: 1rem; }
.payment-option { flex: 1; text-align: center; }
.payment-option input[type="radio"] { display: none; }
.pay-btn { display: block; padding: 1rem; border: 2px solid var(--border); border-radius: var(--radius); cursor: pointer; font-weight: 600; color: var(--text); transition: all 0.2s; }
.payment-option input[type="radio"]:checked + .pay-btn { border-color: var(--secondary); background: #eff6ff; color: var(--secondary); }

/* Animation */
.fade-in { animation: fadeIn 0.4s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Separator */
.separator { display: flex; align-items: center; text-align: center; margin: 1.5rem 0; color: var(--text-muted); }
.separator::before, .separator::after { content: ''; flex: 1; border-bottom: 1px solid var(--border); }
.separator span { padding: 0 1rem; font-size: 0.875rem; font-weight: 500; text-transform: uppercase; }

footer { margin-top: 4rem; padding: 2rem 0; text-align: center; color: var(--text-muted); border-top: 1px solid var(--border); }