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

:root {
    --primary-color: #8B4513;
    --secondary-color: #D2691E;
    --accent-color: #F4A460;
    --bg-color: #FFF8DC;
    --card-bg: #FFFFFF;
    --text-color: #333333;
    --text-light: #666666;
    --success-color: #4CAF50;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* Pantallas */
.screen {
    display: none;
    min-height: 100vh;
    padding-bottom: 2rem;
}

.screen.active {
    display: block;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.logo-container h1 {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 600;
}

.header h2 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.btn-back {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    margin-bottom: 1rem;
    transition: background 0.3s;
}

.btn-back:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Barra de progreso */
.progress-bar {
    background: rgba(255, 255, 255, 0.2);
    height: 6px;
    border-radius: 3px;
    margin-top: 1rem;
    overflow: hidden;
}

.progress {
    background: white;
    height: 100%;
    transition: width 0.3s;
    border-radius: 3px;
}

/* Content */
.content {
    padding: 2rem 1.5rem;
    max-width: 600px;
    margin: 0 auto;
}

.subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
    margin: 1rem 0;
}

.welcome-info {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    margin: 2rem 0;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
}

.info-text {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

/* Botones */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 12px;
    cursor: pointer;
    width: 100%;
    margin-top: 1.5rem;
    transition: all 0.3s;
    box-shadow: var(--shadow);
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

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

/* Cards de huevos */
.egg-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.egg-card {
    background: var(--card-bg);
    padding: 1.5rem 1rem;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow);
    border: 2px solid transparent;
}

.egg-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
    border-color: var(--primary-color);
}

.egg-card.selected {
    border-color: var(--primary-color);
    background: linear-gradient(to bottom, white, var(--bg-color));
}

.egg-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.egg-card h3 {
    font-size: 1.1rem;
    margin: 0.5rem 0;
    color: var(--primary-color);
}

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

/* Formularios */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    color: var(--text-light);
    font-size: 0.85rem;
    margin-top: 0.3rem;
}

/* Cards de problemas */
.problem-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.problem-card {
    background: var(--card-bg);
    padding: 1.5rem 1rem;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow);
    border: 2px solid transparent;
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
    border-color: var(--primary-color);
}

.problem-card.selected {
    border-color: var(--primary-color);
    background: linear-gradient(to bottom, white, var(--bg-color));
}

.problem-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.problem-card h3 {
    font-size: 1rem;
    margin: 0.5rem 0;
    color: var(--primary-color);
    font-weight: 600;
}

.problem-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.3;
}

/* Upload de foto */
.photo-upload {
    margin: 1rem 0;
}

.photo-upload input[type="file"] {
    display: none;
}

.upload-label {
    display: block;
    background: var(--card-bg);
    border: 2px dashed var(--primary-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-label:hover {
    background: var(--bg-color);
    border-color: var(--secondary-color);
}

.photo-preview {
    margin-top: 1rem;
}

.photo-preview img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

/* Confirmación */
.confirmation-content {
    text-align: center;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 2rem auto;
    box-shadow: var(--shadow);
}

.complaint-number {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    margin: 2rem 0;
    box-shadow: var(--shadow);
}

.complaint-number h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-top: 0.5rem;
}

.next-steps {
    text-align: left;
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    margin: 2rem 0;
    box-shadow: var(--shadow);
}

.next-steps h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.next-steps ul {
    list-style: none;
    padding: 0;
}

.next-steps li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.next-steps li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.privacy-notice {
    text-align: center;
    color: var(--text-light);
    font-size: 0.85rem;
    margin-top: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .content {
        padding: 1.5rem 1rem;
    }
    
    .egg-types,
    .problem-types {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .header h2 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .egg-types {
        grid-template-columns: 1fr;
    }
}