:root {
    --primary-color: #0066FF;
    --primary-hover: #0052CC;
    --secondary-color: #1F2937;
    --accent-color: #10B981;
    --bg-color: #F3F4F6;
    --card-bg: #FFFFFF;
    --text-main: #111827;
    --text-muted: #6B7280;
    --border-color: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius: 8px;
}

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

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

/* Header */
.main-header {
    background-color: var(--secondary-color);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.header-container h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.badge {
    background-color: var(--primary-color);
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    vertical-align: middle;
    margin-left: 0.5rem;
}

.tagline {
    color: #D1D5DB;
    font-size: 1.1rem;
}

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

/* Steps */
.steps-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.step-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.step-num {
    background: var(--primary-color);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

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

/* Main Grid */
.grid-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
}

@media (max-width: 768px) {
    .grid-layout {
        grid-template-columns: 1fr;
    }
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card h2 {
    font-size: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
}

.card h2 .icon {
    margin-right: 0.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.half {
    flex: 1;
}

label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.2s;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

/* File Upload */
.file-upload-wrapper {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
}

.file-upload-wrapper:hover {
    background: #F9FAFB;
    border-color: var(--primary-color);
}

.file-upload-wrapper input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.primary-text {
    font-weight: 600;
    color: var(--primary-color);
}

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

.file-list {
    margin-top: 1rem;
    list-style: none;
}

.file-list li {
    background: #F3F4F6;
    padding: 0.5rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
    display: flex;
    justify-content: space-between;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.1s, opacity 0.2s;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

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

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    opacity: 0.9;
}

.btn-block {
    width: 100%;
    display: block;
}

/* Sticky Result */
.result-column {
    display: flex;
    flex-direction: column;
}

.quote-card {
    background: var(--secondary-color);
    color: white;
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 2rem;
}

.info-card {
    background: #DBEAFE;
    color: #1E40AF;
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid #BFDBFE;
}

.quote-body {
    margin-top: 1rem;
}

.quote-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.main-price {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 1rem 0;
}

.alert-box {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    margin: 1rem 0;
    line-height: 1.3;
}

/* Checkbox/Radio */
.checkbox-group {
    background: #FEF2F2;
    border: 1px solid #FEE2E2;
    padding: 1rem;
    border-radius: var(--radius);
}

.label-text strong {
    color: #B91C1C;
}

/* Footer */
.main-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

/* Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    color: white;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top: 5px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
}

.modal-content {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius);
    text-align: center;
    max-width: 500px;
    box-shadow: var(--shadow-md);
    color: var(--text-main);
}

.icon-success {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* UTILIDADES - CRÍTICO: .hidden al final con !important */
.hidden {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}