/**
 * Estilos del Sistema de Formularios
 * Diseño simple y limpio
 */

/* Variables CSS */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

/* Reset y Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Contenedor */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Página de Login */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.5s ease-out;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
}

/* Formularios */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.2s;
    background-color: var(--card-bg);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Botones */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    font-family: inherit;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-primary.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

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

.btn-secondary:hover {
    background-color: #475569;
}

.btn-danger {
    background-color: var(--error-color);
    color: white;
    padding: 8px 16px;
    font-size: 14px;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-logout {
    display: inline-block;
    padding: 8px 16px;
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-logout:hover {
    background-color: rgba(239, 68, 68, 0.2);
}

/* Mensajes */
.error-message,
.success-message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-top: 16px;
    font-size: 14px;
    animation: fadeIn 0.3s ease-out;
}

.error-message {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.success-message {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

/* Header Bar */
.header-bar {
    background: var(--card-bg);
    box-shadow: var(--shadow);
    padding: 16px 0;
    margin-bottom: 32px;
}

.header-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
}

.header-bar h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: nowrap;
}

.user-info span {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Formulario principal */
.form-page {
    min-height: 100vh;
    padding-bottom: 40px;
}

.form-container {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--shadow);
    animation: fadeInUp 0.5s ease-out;
}

.form-section {
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-color);
}

.form-section:last-of-type {
    border-bottom: none;
}

.form-section h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

/* Contenedor de productos */
.producto-item {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 16px;
    position: relative;
    animation: fadeInUp 0.3s ease-out;
}

.producto-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

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

.producto-fields {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 16px;
}
.producto-fields .form-group:last-child {
    justify-self: end;
    text-align: right;
}

.producto-fields .form-group {
    margin-bottom: 0;
}

.producto-fields .form-group.full-width {
    grid-column: 1 / -1;
}

/* Acciones del formulario */
.form-actions {
    margin-top: 32px;
    text-align: center;
}

.form-actions .btn-primary.btn-lg {
    width: 100%;
}

.login-form .btn-primary.btn-lg {
    width: 100%;
}

.message-container {
    margin-top: 20px;
}

/* Animaciones */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
.general-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.cantidad-input {
    max-width: 160px;
    text-align: right;
}

@media (max-width: 768px) {
    .producto-fields {
        grid-template-columns: 1fr;
    }
    .general-fields {
        grid-template-columns: 1fr;
    }
    
    .header-bar .container {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .form-container {
        padding: 20px;
    }
    
    .login-card {
        padding: 28px;
    }

    .user-info .btn,
    .user-info .btn-logout {
        width: 100%;
        text-align: center;
    }
    .btn-primary.btn-lg {
        width: 100%;
    }
    .cantidad-input {
        max-width: 100%;
    }
}

/* Estados de carga */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}